Re: Mac Mini HDD speed

2011-01-25 Thread John Carmonne

On Jan 24, 2011, at 2:53 PM, Kris Tilford wrote:

 On Jan 24, 2011, at 3:46 PM, JoeTaxpayer wrote:
 
 why so hostile?
 
 Tired of dealing with guessing.
 
 Definitely faster? You sure?
 
 Yes, I'm sure.
 
 To confirm that from a 2nd source, look to the original poster who says:
 
 After a bunch of testing speeds not only is the external 7200 IDE FW 400 HDD 
 making the 1.25 Mini run faster than the ATA 4200 but Tiger is about 25% 
 faster than Leopard.
 
 Notice the word testing. I've also done this testing myself. Yes, I am sure.
 

I'm happy someone acknowledged my efforts these ten tests took most of the day, 
Now someone mentioned over-clocking the MOBO is there some step by step 
instructions so I can attempt it? Would that change the overall speeds 
including the FW 400?

Or do I need to start a new OP?

John Carmonne
Yorba Linda CA
92886 USA
Sent from my MBP





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Re: Mac Mini HDD speed

2011-01-25 Thread Dan

At 3:05 PM -0800 1/24/2011, John Carmonne wrote:

Would [over-clocking] change the overall speeds including the FW 400?


Over-clocking increases the speed of the cpu and perhaps the memory 
bus (since its speed is usually a multiple of the cpu's).


It does not change the speed of the i/o buses or their interfaces.

Will it increase i/o throughput?  Perhaps.  The cpu has to set up the 
i/o requests, respond when completed, set up the next ones, respond, 
set up, respond, etc.  The faster it can do that, the less WAIT time 
there is between operations...  A busy bus is a happy bus.


- Dan.
--
- Psychoceramic Emeritus; South Jersey, USA, Earth.

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Re: Mac Mini HDD speed

2011-01-25 Thread t...@io.com


On Jan 24, 8:58 pm, Kris Tilford ktilfo...@cox.net wrote:

 I learned this THE HARD WAY, I actually BOUGHT FW800 enclosures  
 expecting them to be TWICE AS FAST as my old FW400 enclosures, but  
 when I TESTED THEM, they were the SAME SPEED, not because they're not  
 CAPABLE of twice as fast, but because you'd need a RAID of multiple  
 HDs to saturate the connection. This whole 1.5 Gbps or 3.0 Gbps thing  
 for individual HDs is 100% hype. No single HD can sustain anything  
 near that rate. Mechanical LATENCY is the reason. It doesn't matter  
 how fast the electronics can move bits when the mechanical parts can't  
 move equally as fast.

grinning   I learned this exact same lesson in the mid-90s.   On
Nubus machines...

I finally had a PPC NuBus machine (8100 clone) and a I got the holy
grail of interface cards, the FWB Jackhammer Fast  Wide SCSI card.
I had an assortment of ST32550 drives, some N (narrow, 50 pin) and
some W (wide, 68 pin).   The 32550 was the latest, fastest Barracuda
from Seagate and was amongst the very first 7200 RPM drive available.

A single ST32550W on the JackHammer really didn't provide any better
performance than a single ST32550N on the built-in busses, even though
the specifications say 20MB/s vs. 10MB/s.   What!   But it should be
so much faster!

Then I built a RAID of four ST32550W on the JackHammer.   I got maybe
8MB/s actual performance out of it.It was actually faster to have
a RAID of two ST32550W drives than it was to have four of them.

I ultimately found that the fastest RAID was two ST32550Ws on the
JackHammer, one ST32550N on the built-in Fast SCSI bus, and one
ST32550N on the built-in non-Fast bus.   That got me about 12MB/s or
twice what a single drive could deliver.

Anyway, point is, sure the electronics could do 20 MB/s (maybe) but
the drives back then could only output maybe 6 MB/s each and as one
tried to gang those up in a RAID, inefficiencies in the infrastructure
ate up a lot of the potential performance.

Of course, drives today are almost ten times faster (more than?) but
the principles haven't changed a bit.A 133 MB/s interface doesn't
matter one wit, if the drive can only deliver 70MB/s of data.

Jeff Walther

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Re: Mac Mini HDD speed

2011-01-25 Thread peterhaas

 Of course, drives today are almost ten times faster (more than?) but
 the principles haven't changed a bit.A 133 MB/s interface doesn't
 matter one wit, if the drive can only deliver 70MB/s of data.

And, the internal performance of some drives is as low as 40 MB/s.



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Re: Mac Mini HDD speed

2011-01-24 Thread John Carmonne

On Jan 23, 2011, at 7:51 AM, iJohn wrote:

 On Sat, Jan 22, 2011 at 3:36 PM, John Carmonne carmo...@aol.com wrote:
 
 If I use an external 3.5 7200 RPM via Firewire 400 will I gain speed over 
 the internal HDD 4200 RPM in my Mac Mini?
 
 
 That's a hard one to guess at. But my guess would be no, I don't think
 you'd see a gain. Or if there was one, it would not be as large as you
 hoped. When you connect via Firewire 400 you will never be able to
 move data faster than Firewire 400's 400Mbps bus speed. I suppose it's
 possible that a 7200 RPM drive would still appear to perform faster
 than an internal 4200 RPM, but I wouldn't count on it.
OK then let me ask is the internal drive Bus 167 speed going to be faster than 
the same drive connected to the FireWire 400? And does that relate to overall 
performance of my G4 PPC Mac Mini 1.25?


John Carmonne
Yorba Linda CA
92886 USA
Sent from my MBP





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Re: Mac Mini HDD speed

2011-01-24 Thread Ashgrove
On Jan 22, 3:36 pm, John Carmonne carmo...@aol.com wrote:
 If I use an external 3.5 7200 RPM via Firewire 400 will I gain speed over the 
 internal HDD 4200 RPM in my Mac Mini?

In my personal experience, my friend, the speed and size of the
external drive more than make up for the slower bus (FW vs. ATA). I
have used an eMac with an external FW drive for centuries now, and it
beats the internal 80GB HDD every time.

An internal 7200RP or SSD HDD would definitely speed things up, but
they are not cost effective. I would go FW. Just my 2 cents.

Best,

Felix

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Re: Mac Mini HDD speed

2011-01-24 Thread John Carmonne


On Jan 23, 2011, at 9:34 AM, Ashgrove wrote:


On Jan 22, 3:36 pm, John Carmonne carmo...@aol.com wrote:
If I use an external 3.5 7200 RPM via Firewire 400 will I gain  
speed over the internal HDD 4200 RPM in my Mac Mini?


In my personal experience, my friend, the speed and size of the
external drive more than make up for the slower bus (FW vs. ATA). I
have used an eMac with an external FW drive for centuries now, and it
beats the internal 80GB HDD every time.

An internal 7200RP or SSD HDD would definitely speed things up, but
they are not cost effective. I would go FW. Just my 2 cents.

Best,

Felix\



 After a bunch of testing speeds not only is the external 7200 IDE  
FW 400 HDD making the 1.25 Mini run faster than the ATA 4200 but  
Tiger is about 25% faster than Leopard.


JOHN CARMONNE
Yorba Linda USA
From TiBook 867




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Re: Mac Mini HDD speed

2011-01-24 Thread Kris Tilford

On Jan 23, 2011, at 9:51 AM, iJohn wrote:


That's a hard one to guess at. But my guess would be no, I don't think
you'd see a gain. Or if there was one, it would not be as large as you
hoped.


What? Why are you guessing? These are measurable facts. Guessing  
about things isn't acceptable. Either you know some factual  
information or factual reasoning about a topic, or you don't. In this  
case, YOU DON'T, so you shouldn't have posted.


I suppose it's possible that a 7200 RPM drive would still appear to  
perform faster

than an internal 4200 RPM, but I wouldn't count on it.


A 7,200 RPM HD is DEFINITELY faster in a FW400 enclosure than either a  
5,400 RPM or 4,200 RPM. Have you ever even booted from Firewire on a  
daily basis? Have you made measurements? Have you streamed video off a  
Firewire enclosure? Obviously your experience is limited.



More to the point, I feel fairly confident that you would not really
be able to tell the difference between a (recent) SATA 5400 versus
7200 when connected via Firewire 400.


BASED UPON WHAT FACTS? In my experience MEASURING the difference in  
speed, the difference is LARGE and EASY to tell the difference  
between.



In other words, if you're going
to go with a Firewire 400 external drive I'd suggest going with a 5400
drive and save a few bucks. With the recent improvements in platter
bit densities over the last year or two, the throughput of 5400 drives
has increased noticeably. The difference between 5400 and 7200 is not
as noticeable especially when you put that 400 Mbps cap on the drive
throughput.


It's the HD ITSELF that's the limiting factor here, NOT the Firewire  
connection. Any gain you make to the HD will transfer directly,  
arithmetically to the Mini's HD performance.

===

On Jan 23, 2011, at 10:22 AM, John Carmonne wrote:

OK then let me ask is the internal drive Bus 167 speed going to be  
faster than the same drive connected to the FireWire 400?


A 2.5 HD connected to the internal ATA bus is going to be slightly  
faster than any HD connected via Firewire 400, but if the internal  
2.5 HD is the standard OEM 5,400 RPM and the external FW400 is a 3.5  
7,200 RPM the difference will be minimalized substantially. The  
fastest you can achieve will be a SSD connected to the internal ATA;  
followed by a 7,200RPM 2.5 or 5,400RPM 2.5 connected to the internal  
ATA; followed by a 7,200RPM 3.5 connected via Firewire 400, and then  
any slower HDs connected via FW400.


And does that relate to overall performance of my G4 PPC Mac Mini  
1.25?


The best thing you can do to your 1.25GHz Mini for performance is to  
overclock it to 1.42GHz. It's a simple overclock IF you can see well,  
the resistors are TINY. I never soldered mine, they were too small for  
my soldering ability. Instead, to remove one I cut the solder with an  
exacto knife (any tiny sharp knife or razor blade might work?), and to  
add one I used conductive circuit paint using a toothpick. It's a free  
15% speed gain with no downside unless you screw-up and botch the job.


As Newertech and several other companies noticed, there isn't much  
downside to booting a PPC Mini from a 3.5 7,200RPM HD instead of the  
2.5 5,400 RPM OEM drive, and the proliferation of MiniStack  
enclosures is a testament to that concept. I've been using my Mini as  
a media-center computer and I'm trying to squeeze every last bit of  
performance from it, so I boot from a small internal 2.5 7,200 RPM  
drive and use a 1 TB Apple Time Capsule for media storage, but this  
isn't much better than booting from a MiniStack or any good Firewire  
enclosure with a modern 3.5 HD. Note, there is NO difference in speed  
between a 3.5 ATA133/150 HD and a 3.5 SATA HD inside a FW400  
enclosure. If an SATA HD  enclosure are cheaper, that's the best  
deal, but if you have an older ATA 7,200 RPM HD  enclosure it should  
be identical in performance. There are some Firewire 400 enclosures  
with poor performance chipsets, but these are rare in more modern  
enclosures. Definitely avoid anything by GeneSys Logic which will NOT  
work. Oxford is best, and anything by a HD manufacturer is good.


The 1.25 Mini is going to be a little bit too slow to play modern HD  
video smoothly, the bottleneck isn't the HD, it's the Radeon 9200  
video which unfortunately can't be upgraded at all, and severely  
limits these older PPC Minis. I suspect slower G4 PowerMacs with  
better video cards can outperform these G4 Minis. About the only thing  
you can do to get better video card performance is limit the  
resolution to something smaller. Unfortunately on my HDTV the only  
proportional resolution available is the highest resolution 1,920x1080  
which kills the video performance and renders HD quality video to a  
stuttering mess. Any lower resolution would increase performance, but  
in my case, such isn't possible. Tiger 10.4 is about 15-20% faster on  
the G4 Mini than 

Re: Mac Mini HDD speed

2011-01-24 Thread peterhaas

 A 7,200 RPM HD is DEFINITELY faster in a FW400 enclosure than either a
 5,400 RPM or 4,200 RPM. Have you ever even booted from Firewire on a
 daily basis? Have you made measurements? Have you streamed video off a
 Firewire enclosure? Obviously your experience is limited.

The rotational speed of a drive (3,600 rpm, 4,200 rpm, 5,400 rpm, 7,200
rpm or, indeed, infinite rpm) directly impacts the latency of a drive's
performance, generally taken to be one-half of the reciprocal of the
effective rpm of the drive.

Indeed, using this measure alone, a 7,200 rpm drive is twice as fast as
a 3,600 rpm drive.

Yeah, right!

(3,600 rpm WAS the classic speed of a mainframe drive, but as the demand
for higher-capacity drives became evident, the only way to achieve the
required higher capacity, within the same hard drive FORM FACTOR, was to
REDUCE the rpm, thereby giving a 9 GB capacity from an otherwise 3 GB
capacity drive, or an 18 GB capacity from an oherwise 6 GB capacity drive,
etcetera).

Yet, the average throughput capacity of most drive electronics and host
bus adapter electronics remained essentially the same, at about 40
megabytes/second, MAXIMUM.

And, the average latency is still one-half of the reciprocal of the
rotational speed.

Can't change physics. It is immutable.



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Re: Mac Mini HDD speed

2011-01-24 Thread JoeTaxpayer
Kris, why so hostile? Since FW400 is limited to 400Mbs, and a 5400RPM
drive will run 3Gbs, how will a 7200RMP offer more performance when
the bottleneck is in the FW400 itself? In any system, one needs to
look at where the bottleneck is, and iJohn's guess passed the common
sense test with me. An SSD addressed through FW400 will perform no
better.
Definitely faster? You sure?

On Jan 24, 2:51 pm, Kris Tilford ktilfo...@cox.net wrote:
 On Jan 23, 2011, at 9:51 AM, iJohn wrote:

  That's a hard one to guess at. But my guess would be no, I don't think
  you'd see a gain. Or if there was one, it would not be as large as you
  hoped.

 What? Why are you guessing? These are measurable facts. Guessing  
 about things isn't acceptable. Either you know some factual  
 information or factual reasoning about a topic, or you don't. In this  
 case, YOU DON'T, so you shouldn't have posted.

  I suppose it's possible that a 7200 RPM drive would still appear to  
  perform faster
  than an internal 4200 RPM, but I wouldn't count on it.

 A 7,200 RPM HD is DEFINITELY faster in a FW400 enclosure than either a  
 5,400 RPM or 4,200 RPM. Have you ever even booted from Firewire on a  
 daily basis? Have you made measurements? Have you streamed video off a  
 Firewire enclosure? Obviously your experience is limited.

  More to the point, I feel fairly confident that you would not really
  be able to tell the difference between a (recent) SATA 5400 versus
  7200 when connected via Firewire 400.

 BASED UPON WHAT FACTS? In my experience MEASURING the difference in  
 speed, the difference is LARGE and EASY to tell the difference  
 between.

  In other words, if you're going
  to go with a Firewire 400 external drive I'd suggest going with a 5400
  drive and save a few bucks. With the recent improvements in platter
  bit densities over the last year or two, the throughput of 5400 drives
  has increased noticeably. The difference between 5400 and 7200 is not
  as noticeable especially when you put that 400 Mbps cap on the drive
  throughput.

 It's the HD ITSELF that's the limiting factor here, NOT the Firewire  
 connection. Any gain you make to the HD will transfer directly,  
 arithmetically to the Mini's HD performance.
 ===

 On Jan 23, 2011, at 10:22 AM, John Carmonne wrote:

  OK then let me ask is the internal drive Bus 167 speed going to be  
  faster than the same drive connected to the FireWire 400?

 A 2.5 HD connected to the internal ATA bus is going to be slightly  
 faster than any HD connected via Firewire 400, but if the internal  
 2.5 HD is the standard OEM 5,400 RPM and the external FW400 is a 3.5  
 7,200 RPM the difference will be minimalized substantially. The  
 fastest you can achieve will be a SSD connected to the internal ATA;  
 followed by a 7,200RPM 2.5 or 5,400RPM 2.5 connected to the internal  
 ATA; followed by a 7,200RPM 3.5 connected via Firewire 400, and then  
 any slower HDs connected via FW400.

  And does that relate to overall performance of my G4 PPC Mac Mini  
  1.25?

 The best thing you can do to your 1.25GHz Mini for performance is to  
 overclock it to 1.42GHz. It's a simple overclock IF you can see well,  
 the resistors are TINY. I never soldered mine, they were too small for  
 my soldering ability. Instead, to remove one I cut the solder with an  
 exacto knife (any tiny sharp knife or razor blade might work?), and to  
 add one I used conductive circuit paint using a toothpick. It's a free  
 15% speed gain with no downside unless you screw-up and botch the job.

 As Newertech and several other companies noticed, there isn't much  
 downside to booting a PPC Mini from a 3.5 7,200RPM HD instead of the  
 2.5 5,400 RPM OEM drive, and the proliferation of MiniStack  
 enclosures is a testament to that concept. I've been using my Mini as  
 a media-center computer and I'm trying to squeeze every last bit of  
 performance from it, so I boot from a small internal 2.5 7,200 RPM  
 drive and use a 1 TB Apple Time Capsule for media storage, but this  
 isn't much better than booting from a MiniStack or any good Firewire  
 enclosure with a modern 3.5 HD. Note, there is NO difference in speed  
 between a 3.5 ATA133/150 HD and a 3.5 SATA HD inside a FW400  
 enclosure. If an SATA HD  enclosure are cheaper, that's the best  
 deal, but if you have an older ATA 7,200 RPM HD  enclosure it should  
 be identical in performance. There are some Firewire 400 enclosures  
 with poor performance chipsets, but these are rare in more modern  
 enclosures. Definitely avoid anything by GeneSys Logic which will NOT  
 work. Oxford is best, and anything by a HD manufacturer is good.

 The 1.25 Mini is going to be a little bit too slow to play modern HD  
 video smoothly, the bottleneck isn't the HD, it's the Radeon 9200  
 video which unfortunately can't be upgraded at all, and severely  
 limits these older PPC Minis. I suspect slower G4 PowerMacs with  

Re: Mac Mini HDD speed

2011-01-24 Thread Albert Carter
Ok now I'm lost. I thought Kris was referring to IDE not SATA. SATA II and SATA 
III in a Firewire enclosure will of course run slower than plugged directly 
into a SATA II or SATA III Controller.



From: JoeTaxpayer joetaxpaye...@gmail.com
To: G-Group g3-5-list@googlegroups.com
Cc: 
Sent: Monday, January 24, 2011 4:46 PM
Subject: Re: Mac Mini HDD speed

Kris, why so hostile? Since FW400 is limited to 400Mbs, and a 5400RPM
drive will run 3Gbs, how will a 7200RMP offer more performance when
the bottleneck is in the FW400 itself? In any system, one needs to
look at where the bottleneck is, and iJohn's guess passed the common
sense test with me. An SSD addressed through FW400 will perform no
better.
Definitely faster? You sure?

On Jan 24, 2:51 pm, Kris Tilford ktilfo...@cox.net wrote:
 On Jan 23, 2011, at 9:51 AM, iJohn wrote:

  That's a hard one to guess at. But my guess would be no, I don't think
  you'd see a gain. Or if there was one, it would not be as large as you
  hoped.

 What? Why are you guessing? These are measurable facts. Guessing  
 about things isn't acceptable. Either you know some factual  
 information or factual reasoning about a topic, or you don't. In this  
 case, YOU DON'T, so you shouldn't have posted.

  I suppose it's possible that a 7200 RPM drive would still appear to  
  perform faster
  than an internal 4200 RPM, but I wouldn't count on it.

 A 7,200 RPM HD is DEFINITELY faster in a FW400 enclosure than either a  
 5,400 RPM or 4,200 RPM. Have you ever even booted from Firewire on a  
 daily basis? Have you made measurements? Have you streamed video off a  
 Firewire enclosure? Obviously your experience is limited.

  More to the point, I feel fairly confident that you would not really
  be able to tell the difference between a (recent) SATA 5400 versus
  7200 when connected via Firewire 400.

 BASED UPON WHAT FACTS? In my experience MEASURING the difference in  
 speed, the difference is LARGE and EASY to tell the difference  
 between.

  In other words, if you're going
  to go with a Firewire 400 external drive I'd suggest going with a 5400
  drive and save a few bucks. With the recent improvements in platter
  bit densities over the last year or two, the throughput of 5400 drives
  has increased noticeably. The difference between 5400 and 7200 is not
  as noticeable especially when you put that 400 Mbps cap on the drive
  throughput.

 It's the HD ITSELF that's the limiting factor here, NOT the Firewire  
 connection. Any gain you make to the HD will transfer directly,  
 arithmetically to the Mini's HD performance.
 ===

 On Jan 23, 2011, at 10:22 AM, John Carmonne wrote:

  OK then let me ask is the internal drive Bus 167 speed going to be  
  faster than the same drive connected to the FireWire 400?

 A 2.5 HD connected to the internal ATA bus is going to be slightly  
 faster than any HD connected via Firewire 400, but if the internal  
 2.5 HD is the standard OEM 5,400 RPM and the external FW400 is a 3.5  
 7,200 RPM the difference will be minimalized substantially. The  
 fastest you can achieve will be a SSD connected to the internal ATA;  
 followed by a 7,200RPM 2.5 or 5,400RPM 2.5 connected to the internal  
 ATA; followed by a 7,200RPM 3.5 connected via Firewire 400, and then  
 any slower HDs connected via FW400.

  And does that relate to overall performance of my G4 PPC Mac Mini  
  1.25?

 The best thing you can do to your 1.25GHz Mini for performance is to  
 overclock it to 1.42GHz. It's a simple overclock IF you can see well,  
 the resistors are TINY. I never soldered mine, they were too small for  
 my soldering ability. Instead, to remove one I cut the solder with an  
 exacto knife (any tiny sharp knife or razor blade might work?), and to  
 add one I used conductive circuit paint using a toothpick. It's a free  
 15% speed gain with no downside unless you screw-up and botch the job.

 As Newertech and several other companies noticed, there isn't much  
 downside to booting a PPC Mini from a 3.5 7,200RPM HD instead of the  
 2.5 5,400 RPM OEM drive, and the proliferation of MiniStack  
 enclosures is a testament to that concept. I've been using my Mini as  
 a media-center computer and I'm trying to squeeze every last bit of  
 performance from it, so I boot from a small internal 2.5 7,200 RPM  
 drive and use a 1 TB Apple Time Capsule for media storage, but this  
 isn't much better than booting from a MiniStack or any good Firewire  
 enclosure with a modern 3.5 HD. Note, there is NO difference in speed  
 between a 3.5 ATA133/150 HD and a 3.5 SATA HD inside a FW400  
 enclosure. If an SATA HD  enclosure are cheaper, that's the best  
 deal, but if you have an older ATA 7,200 RPM HD  enclosure it should  
 be identical in performance. There are some Firewire 400 enclosures  
 with poor performance chipsets, but these are rare in more modern  
 enclosures. Definitely avoid anything by GeneSys Logic

Re: Mac Mini HDD speed

2011-01-24 Thread t...@io.com


On Jan 22, 3:58 pm, peterh...@cruzio.com wrote:
  Cyberguys also has 2.5 drives, but all of the drives in this size,
  IDE/ATA and SATA, are 5400 RPM. The 2.5IDE/ATA drives are Western
  Digital and come in 80GB ($57), 160GB ($72) and 250GB ($88)
  capacities.

 Micro Center stocks WD ATAs in up to and including 320 GB.

 Micro Center's price on 320s is about $100 ... their price on 160s is
 about $65.

Amazon offers the 5400RPM WD 320GB 2.5 drive for $90 with free
shipping.
http://www.amazon.com/Western-Digital-2-5-Inch-Notebook-WD3200BEVE/dp/
B001SQH1DY/ref=sr_1_1?ie=UTF8s=miscellaneousqid=1295905894sr=8-1

I think I found it one or two other places for about $10 less, but the
other places seemed to be offering OEM drives which did not include
Western Digital's 3 year warranty.   The item description for this
drive on Amazon's site claims it has the WD warranty, so even if WD
doesn't honor it, one could complain to Amazon.

I'm pretty sure there was a 500GB 2.5 PATA drive from WD for a little
while, but no one seems to have stock any more.  Unless WD announced
it and never shipped it?

I bought one (the 320GB) for my G4 Mini, but I have not installed it
yet.  It's going to cause a cascade of upgrades which I'm not quite
ready for yet.

Jeff Walther

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Re: Mac Mini HDD speed

2011-01-24 Thread JoeTaxpayer
If putting it into the mini, it needed to be PATA, but why bother
buying a drive that's probably twice the price in an old format to put
into a FW enclosure?

On Jan 24, 4:51 pm, Albert Carter slvrmoonti...@yahoo.com wrote:
 Ok now I'm lost. I thought Kris was referring to IDE not SATA. SATA II and 
 SATA III in a Firewire enclosure will of course run slower than plugged 
 directly into a SATA II or SATA III Controller.

 From: JoeTaxpayer joetaxpaye...@gmail.com
 To: G-Group g3-5-list@googlegroups.com
 Cc:
 Sent: Monday, January 24, 2011 4:46 PM
 Subject: Re: Mac Mini HDD speed

 Kris, why so hostile? Since FW400 is limited to 400Mbs, and a 5400RPM
 drive will run 3Gbs, how will a 7200RMP offer more performance when
 the bottleneck is in the FW400 itself? In any system, one needs to
 look at where the bottleneck is, and iJohn's guess passed the common
 sense test with me. An SSD addressed through FW400 will perform no
 better.
 Definitely faster? You sure?

 On Jan 24, 2:51 pm, Kris Tilford ktilfo...@cox.net wrote:

  On Jan 23, 2011, at 9:51 AM, iJohn wrote:

   That's a hard one to guess at. But my guess would be no, I don't think
   you'd see a gain. Or if there was one, it would not be as large as you
   hoped.

  What? Why are you guessing? These are measurable facts. Guessing  
  about things isn't acceptable. Either you know some factual  
  information or factual reasoning about a topic, or you don't. In this  
  case, YOU DON'T, so you shouldn't have posted.

   I suppose it's possible that a 7200 RPM drive would still appear to  
   perform faster
   than an internal 4200 RPM, but I wouldn't count on it.

  A 7,200 RPM HD is DEFINITELY faster in a FW400 enclosure than either a  
  5,400 RPM or 4,200 RPM. Have you ever even booted from Firewire on a  
  daily basis? Have you made measurements? Have you streamed video off a  
  Firewire enclosure? Obviously your experience is limited.

   More to the point, I feel fairly confident that you would not really
   be able to tell the difference between a (recent) SATA 5400 versus
   7200 when connected via Firewire 400.

  BASED UPON WHAT FACTS? In my experience MEASURING the difference in  
  speed, the difference is LARGE and EASY to tell the difference  
  between.

   In other words, if you're going
   to go with a Firewire 400 external drive I'd suggest going with a 5400
   drive and save a few bucks. With the recent improvements in platter
   bit densities over the last year or two, the throughput of 5400 drives
   has increased noticeably. The difference between 5400 and 7200 is not
   as noticeable especially when you put that 400 Mbps cap on the drive
   throughput.

  It's the HD ITSELF that's the limiting factor here, NOT the Firewire  
  connection. Any gain you make to the HD will transfer directly,  
  arithmetically to the Mini's HD performance.
  ===

  On Jan 23, 2011, at 10:22 AM, John Carmonne wrote:

   OK then let me ask is the internal drive Bus 167 speed going to be  
   faster than the same drive connected to the FireWire 400?

  A 2.5 HD connected to the internal ATA bus is going to be slightly  
  faster than any HD connected via Firewire 400, but if the internal  
  2.5 HD is the standard OEM 5,400 RPM and the external FW400 is a 3.5  
  7,200 RPM the difference will be minimalized substantially. The  
  fastest you can achieve will be a SSD connected to the internal ATA;  
  followed by a 7,200RPM 2.5 or 5,400RPM 2.5 connected to the internal  
  ATA; followed by a 7,200RPM 3.5 connected via Firewire 400, and then  
  any slower HDs connected via FW400.

   And does that relate to overall performance of my G4 PPC Mac Mini  
   1.25?

  The best thing you can do to your 1.25GHz Mini for performance is to  
  overclock it to 1.42GHz. It's a simple overclock IF you can see well,  
  the resistors are TINY. I never soldered mine, they were too small for  
  my soldering ability. Instead, to remove one I cut the solder with an  
  exacto knife (any tiny sharp knife or razor blade might work?), and to  
  add one I used conductive circuit paint using a toothpick. It's a free  
  15% speed gain with no downside unless you screw-up and botch the job.

  As Newertech and several other companies noticed, there isn't much  
  downside to booting a PPC Mini from a 3.5 7,200RPM HD instead of the  
  2.5 5,400 RPM OEM drive, and the proliferation of MiniStack  
  enclosures is a testament to that concept. I've been using my Mini as  
  a media-center computer and I'm trying to squeeze every last bit of  
  performance from it, so I boot from a small internal 2.5 7,200 RPM  
  drive and use a 1 TB Apple Time Capsule for media storage, but this  
  isn't much better than booting from a MiniStack or any good Firewire  
  enclosure with a modern 3.5 HD. Note, there is NO difference in speed  
  between a 3.5 ATA133/150 HD and a 3.5 SATA HD inside a FW400  
  enclosure. If an SATA HD  enclosure

Re: Mac Mini HDD speed

2011-01-24 Thread Kris Tilford

On Jan 24, 2011, at 3:46 PM, JoeTaxpayer wrote:


why so hostile?


Tired of dealing with guessing.


Definitely faster? You sure?


Yes, I'm sure.

To confirm that from a 2nd source, look to the original poster who says:

After a bunch of testing speeds not only is the external 7200 IDE FW  
400 HDD making the 1.25 Mini run faster than the ATA 4200 but Tiger  
is about 25% faster than Leopard.


Notice the word testing. I've also done this testing myself. Yes, I  
am sure.


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Re: Mac Mini HDD speed

2011-01-24 Thread Dan

At 12:06 PM -0800 1/24/2011, peterh...@cruzio.com wrote:

Yet, the average throughput capacity of most drive electronics and host
bus adapter electronics remained essentially the same, at about 40
megabytes/second, MAXIMUM.


This is not about raw or sustained throughput.  If all people did was 
a single latency/seek cycle then read or write whole cylinders,,, 
then the rotational speed of a drive would not matter so much.  The 
bottleneck would be the interfaces and buffers.


But that's just not the case.

People rarely read/write whole tracks at once on a HD.  They grab a 
few sectors then WAIT for that latency and seek cycle, grab a few 
other sectors then WAIT for that latency and seek cycle, grab a few 
other sectors then WAIT for that latency and seek cycle, etc.


Those WAIT cycles are soo long, the net effect is that it doesn't 
matter how fast the actual read/write time is on the drive, or the 
interface speeds (once they're fast enough)... what matters is how 
long YOU are bored to death waiting for your system to gather all the 
data you need.


A faster rotational speed = shorter latency = shorter wait times = 
higher performance.


- Dan.
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Re: Mac Mini HDD speed

2011-01-24 Thread JoeTaxpayer
To be clear, you're talking PATA in the external FW enclosure,
correct? In which case the numbers support your position.
I don't know that it makes sense to go buy a PATA drive to load into
an enclosure, one can buy a 1TB external for less than the 320GB PATA
going into the FW box.  An odd choice.

On Jan 24, 5:53 pm, Kris Tilford ktilfo...@cox.net wrote:
 On Jan 24, 2011, at 3:46 PM, JoeTaxpayer wrote:

  why so hostile?

 Tired of dealing with guessing.

  Definitely faster? You sure?

 Yes, I'm sure.

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Re: Mac Mini HDD speed

2011-01-24 Thread Kris Tilford

On Jan 24, 2011, at 7:17 PM, JoeTaxpayer wrote:


To be clear, you're talking PATA in the external FW enclosure,
correct?


No. It doesn't make any difference. It can be SATA I, SATA II,  
PATA133, or PATA150 . They're all going to be roughly the same speed  
as single HDs. A newer 7,200 RPM PATA HD is generally going to be a  
faster HD than any 5,400 RPM SATA HD. We're talking about SINGLE HDs,  
not RAID HDs. For normal SINGLE HD setups, it's the rotational speed  
and the latency of the HD that are important, NOT the connection speed  
to the computer. The only exception would be for extremely old, slow  
connections like USB 1.1 or older SCSI. For modern ATA, SATA, eSATA,  
USB 2.0, USB 3.0, FW400, FW800, FW1600, or FW3200 with a SINGLE HD  
there's not going to be much noticeable difference in performance for  
the user. The factor with the single greatest influence will be the HD  
itself. Its rotational speed is directly proportional to its latency.


I learned this THE HARD WAY, I actually BOUGHT FW800 enclosures  
expecting them to be TWICE AS FAST as my old FW400 enclosures, but  
when I TESTED THEM, they were the SAME SPEED, not because they're not  
CAPABLE of twice as fast, but because you'd need a RAID of multiple  
HDs to saturate the connection. This whole 1.5 Gbps or 3.0 Gbps thing  
for individual HDs is 100% hype. No single HD can sustain anything  
near that rate. Mechanical LATENCY is the reason. It doesn't matter  
how fast the electronics can move bits when the mechanical parts can't  
move equally as fast. HD RPM is one direct method to lower latency.  
Like Dan said, it's the WAIT cycles that are the killer here, not the  
speed of the connection. To quote Dan, A faster rotational speed =  
shorter latency = shorter wait times = higher performance. The  
connection speed isn't important, it's NOT THE LIMITING FACTOR for a  
single modern HDs.


Sorry for being so hostile today. I don't like guessing about  
facts. I don't like using advertising hype as a substitute for  
reality. I'm a little frustrated and my patience is thin. Too much  
snow, too much cold, too much cabin fever.


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Re: Mac Mini HDD speed

2011-01-23 Thread iJohn
On Sat, Jan 22, 2011 at 3:36 PM, John Carmonne carmo...@aol.com wrote:

 If I use an external 3.5 7200 RPM via Firewire 400 will I gain speed over the 
 internal HDD 4200 RPM in my Mac Mini?


That's a hard one to guess at. But my guess would be no, I don't think
you'd see a gain. Or if there was one, it would not be as large as you
hoped. When you connect via Firewire 400 you will never be able to
move data faster than Firewire 400's 400Mbps bus speed. I suppose it's
possible that a 7200 RPM drive would still appear to perform faster
than an internal 4200 RPM, but I wouldn't count on it.

More to the point, I feel fairly confident that you would not really
be able to tell the difference between a (recent) SATA 5400 versus
7200 when connected via Firewire 400. In other words, if you're going
to go with a Firewire 400 external drive I'd suggest going with a 5400
drive and save a few bucks. With the recent improvements in platter
bit densities over the last year or two, the throughput of 5400 drives
has increased noticeably. The difference between 5400 and 7200 is not
as noticeable especially when you put that 400 Mbps cap on the drive
throughput.

On Sat, Jan 22, 2011 at 4:28 PM, John Carmonne carmo...@aol.com wrote:

 Newegg has a large selection of them including large accompanying prices.
  http://www.newegg.com/Product/ProductList.aspx?Submit=ENEN=18120%20600038505IsNodeId=1name=PATA


Anyone care to do the math on what percentage of the current market
price of a PPC Mac Mini those PATA SDDs might be?  ;-)

It is NOT how fast any particular component of a system may be which
determines the performance of a system. It's the sum of all the
components ... the system itself ... and how they are used ... the
applications and OS. In my opinion buying an SSD for a PPC Mini is
just throwing money away. If you can afford to throw money at an SSD
you'd probably get more bang for your buck by upgrading to a later,
Intel version of the Mac Mini. But to each their own ...

-irrational john

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Re: Mac Mini HDD speed

2011-01-22 Thread Bruce Johnson


On Jan 22, 2011, at 9:28 AM, John Carmonne wrote:

I recently got a Mac Mini PPC 1.25 with a 4200 RPM  ATA 40 GB HDD.  
Is there an advantage to putting in a 7200 RPM ATA HDD? I know  
they're a little scarce but if it increases performance it's worth a  
try.




yes, in my experience with laptops, going from 4200 to 7200 is a  
sizeable boost in performance.

--
Bruce Johnson
University of Arizona
College of Pharmacy
Information Technology Group

Institutions do not have opinions, merely customs

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Re: Mac Mini HDD speed

2011-01-22 Thread Bill Bunny Kuhlman

John,

The 7200 RPM drives have faster seek times. There may also be a 
higher Bus speed and a larger buffer, making data access, transfer 
and use by software more rapid.


So far as price, cyberguys.com has Western Digital IDE/ATA drives in 
3.5 diameter. These have the 7200 RPM speed you're looking for and 
come in 160GB ($53), 250GB ($65) and 500GB ($85) capacities.


Hope that helps!


I recently got a Mac Mini PPC 1.25 with a 4200 RPM  ATA 40 GB HDD. 
Is there an advantage to putting in a 7200 RPM ATA HDD? I know 
they're a little scarce but if it increases performance it's worth a 
try.



John Carmonne
Yorba Linda CA
92886 USA
Sent from my MBP


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Re: Mac Mini HDD speed

2011-01-22 Thread peterhaas

 The 7200 RPM drives have faster seek times. There may also be a
 higher Bus speed and a larger buffer, making data access, transfer
 and use by software more rapid.

 So far as price, cyberguys.com has Western Digital IDE/ATA drives in
 3.5 diameter. These have the 7200 RPM speed you're looking for and
 come in 160GB ($53), 250GB ($65) and 500GB ($85) capacities.

 Hope that helps!

There are not a lot of options in the 2.5 IDE form factor, which is what
the early Minis require.

As there are so few offerings still available in 2.5 IDE drives, you get
what you can find.

OWC probably has the widest offerings.



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Re: Mac Mini HDD speed

2011-01-22 Thread JoeTaxpayer
For 2.5 why no use a SSD?

On Jan 22, 1:21 pm, peterh...@cruzio.com wrote:
  The 7200 RPM drives have faster seek times. There may also be a
  higher Bus speed and a larger buffer, making data access, transfer
  and use by software more rapid.

  So far as price, cyberguys.com has Western Digital IDE/ATA drives in
  3.5 diameter. These have the 7200 RPM speed you're looking for and
  come in 160GB ($53), 250GB ($65) and 500GB ($85) capacities.

  Hope that helps!

 There are not a lot of options in the 2.5 IDE form factor, which is what
 the early Minis require.

 As there are so few offerings still available in 2.5 IDE drives, you get
 what you can find.

 OWC probably has the widest offerings.

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Re: Mac Mini HDD speed

2011-01-22 Thread Alex Barnes
Cost?

 For 2.5 why no use a SSD?

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Re: Mac Mini HDD speed

2011-01-22 Thread Baldassare Guzzo
My experience with PowerBooks was that going fron 4200 to 7200 had a noticeable 
increase in speed and a noticeable decrease in battery life.  I think on a Mini 
you would like the results. 

On Jan 22, 2011, at 11:28 AM, John Carmonne carmo...@aol.com wrote:

 I recently got a Mac Mini PPC 1.25 with a 4200 RPM  ATA 40 GB HDD. Is there 
 an advantage to putting in a 7200 RPM ATA HDD? I know they're a little scarce 
 but if it increases performance it's worth a try.
 
 
 John Carmonne
 Yorba Linda CA
 92886 USA
 Sent from my MBP
 
 
 
 
 
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Re: Mac Mini HDD speed

2011-01-22 Thread Tina K.

On 2011/01/22 09:28, John Carmonne so eloquently wrote:

I recently got a Mac Mini PPC 1.25 with a 4200 RPM  ATA 40 GB HDD. Is
there an advantage to putting in a 7200 RPM ATA HDD? I know they're a
little scarce but if it increases performance it's worth a try.


My only concern would be heat. I don't know how good the Mini's cooling 
system is designed and how hard you are going to be running it so it's 
hard to say if it will be an issue or not.


Tina

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Re: Mac Mini HDD speed

2011-01-22 Thread Bill Bunny Kuhlman
Cyberguys also has 2.5 drives, but all of the drives in this size, 
IDE/ATA and SATA, are 5400 RPM. The 2.5IDE/ATA drives are Western 
Digital and come in 80GB ($57), 160GB ($72) and 250GB ($88) 
capacities.


Because of the smaller diameter, it seems as though 5400 RPM on a 
2.5 drive would be roughly equivalent to a 3.5 drive rotating at 
7200 RPM. Bus speed and buffer size are the same for both diameters.




  The 7200 RPM drives have faster seek times. There may also be a

 higher Bus speed and a larger buffer, making data access, transfer
 and use by software more rapid.

 So far as price, cyberguys.com has Western Digital IDE/ATA drives in
 3.5 diameter. These have the 7200 RPM speed you're looking for and
 come in 160GB ($53), 250GB ($65) and 500GB ($85) capacities.

 Hope that helps!


There are not a lot of options in the 2.5 IDE form factor, which is what
the early Minis require.

As there are so few offerings still available in 2.5 IDE drives, you get
what you can find.

OWC probably has the widest offerings.



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Re: Mac Mini HDD speed

2011-01-22 Thread Bruce Johnson

On Jan 22, 2011, at 12:22 PM, JoeTaxpayer wrote:

 For 2.5 why no use a SSD?


Because ATA SSD's are small, and insanely expensive, and lightness isn't the 
prime requirement of a Mini.

-- 
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Wherever you go, there you are B. Banzai,  PhD

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Re: Mac Mini HDD speed

2011-01-22 Thread Jason Brown
That particular Mini uses PATA interface instead of SATA. Finding an SSD 
in PATA could be problematic.


On 1/22/2011 1:22 PM, JoeTaxpayer wrote:

For 2.5 why no use a SSD?

On Jan 22, 1:21 pm, peterh...@cruzio.com wrote:

The 7200 RPM drives have faster seek times. There may also be a
higher Bus speed and a larger buffer, making data access, transfer
and use by software more rapid.
So far as price, cyberguys.com has Western Digital IDE/ATA drives in
3.5 diameter. These have the 7200 RPM speed you're looking for and
come in 160GB ($53), 250GB ($65) and 500GB ($85) capacities.
Hope that helps!

There are not a lot of options in the 2.5 IDE form factor, which is what
the early Minis require.

As there are so few offerings still available in 2.5 IDE drives, you get
what you can find.

OWC probably has the widest offerings.


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Re: Mac Mini HDD speed

2011-01-22 Thread John Carmonne

On Jan 22, 2011, at 12:20 PM, Bruce Johnson wrote:

 
 On Jan 22, 2011, at 12:22 PM, JoeTaxpayer wrote:
 
 For 2.5 why no use a SSD?
 
 
 Because ATA SSD's are small, and insanely expensive, and lightness isn't the 
 prime requirement of a Mini.
 
 -- 
 Bruce Johnson
 
 Wherever you go, there you are B. Banzai,  PhD


If I use an external 3.5 7200 RPM via Firewire 400 will I gain speed over the 
internal HDD 4200 RPM in my Mac Mini?

John Carmonne
Yorba Linda CA
92886 USA
Sent from my MBP





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Re: Mac Mini HDD speed

2011-01-22 Thread Alex Barnes
I think OWC makes a SSD with a PATA interface.
 That particular Mini uses PATA interface instead of SATA. Finding an SSD in 
 PATA could be problematic.

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Re: Mac Mini HDD speed

2011-01-22 Thread Jeffrey Daile Engle
Is ther IDE 2.5 SSD's? or for that matter is ther IDE SSD's period? Jeff
On Jan 22, 2011, at 11:30 AM, Alex Barnes wrote:

 Cost?
 
 For 2.5 why no use a SSD?
 
 -- 

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Re: Mac Mini HDD speed

2011-01-22 Thread John Carmonne

On Jan 22, 2011, at 12:03 PM, Jason Brown wrote:

 That particular Mini uses PATA interface instead of SATA. Finding an SSD in 
 PATA could be problematic.
 
Newegg has a large selection of them including large accompanying prices. 

 
http://www.newegg.com/Product/ProductList.aspx?Submit=ENEN=18120%20600038505IsNodeId=1name=PATA

John Carmonne
Yorba Linda CA
92886 USA
Sent from my MBP





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Re: Mac Mini HDD speed

2011-01-22 Thread peterhaas

 Cyberguys also has 2.5 drives, but all of the drives in this size,
 IDE/ATA and SATA, are 5400 RPM. The 2.5IDE/ATA drives are Western
 Digital and come in 80GB ($57), 160GB ($72) and 250GB ($88)
 capacities.

Micro Center stocks WD ATAs in up to and including 320 GB.

Micro Center's price on 320s is about $100 ... their price on 160s is
about $65.

Still, not a lot of options for internal storage on early Minis.

A place named iFixIt stocks a drive cage and adapter which replaces the
ATA CD or DVD drive with a second hard drive. Doesn't come with any of the
required mounting screws, however.

Still, you are limited to 320 GB as the adapter is ATA-to-ATA.

If using Firewire, there are options available up to 2000 GB.



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Re: Mac Mini HDD speed

2011-01-22 Thread peterhaas

 A place named iFixIt stocks a drive cage and adapter which replaces the
 ATA CD or DVD drive with a second hard drive. Doesn't come with any of the
 required mounting screws, however.

There are a number of folks on ePrey (sic) which are selling a similar
product, but is SATA-to-SATA, for later Minis and others which use 12.7mm
(1/2) slim optical drives.

Those folks, who ship from Hong Kong, include screws!




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