Re: motherboad for desktop

2009-08-26 Thread Justin The Cynical

Charles Kroeger wrote:

virtually any  board easily available today is going to make use of DDR2 memory


What about DDR3 memory, is that preferable?


IMO, YMMV, IMNAL, etc and so on, DDR3 would only be of any real use with 
 higher end CPU and motherboards that can take advantage of the extra 
memory bus bandwidth.


DDR3 still has a price premium over DDR2, so it's not as cost effective. 
 Granted, it's not much, but it is there.


DDR3 does have the advantage of being a bit more future proof as it is 
'the future' for system memory.


It all depends on the budget and the intended purpose for the system.


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Re: motherboad for desktop

2009-08-26 Thread Ron Johnson

On 2009-08-26 05:30, Justin The Cynical wrote:

Charles Kroeger wrote:
virtually any  board easily available today is going to make use of 
DDR2 memory


What about DDR3 memory, is that preferable?


IMO, YMMV, IMNAL, etc and so on, DDR3 would only be of any real use with 
 higher end CPU and motherboards that can take advantage of the extra 
memory bus bandwidth.


DDR3 still has a price premium over DDR2, so it's not as cost effective. 
 Granted, it's not much, but it is there.


DDR3 does have the advantage of being a bit more future proof as it is 
'the future' for system memory.


Further boosting cost, you need to buy DDR3 in triplets, instead of 
pairs like with DDR2.


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Re: motherboad for desktop

2009-08-25 Thread Alexandru Cardaniuc
Ron Johnson ron.l.john...@cox.net writes:

 On 2009-08-23 11:01, Francesco Pietra wrote:
 Hi: My old K7S5A (SiS735 chipset) Athlon i386 lenny desktop has died
 and I am wondering how to set up a new one for the same service
 (running 32bit graphic scientific programs, besides office use, and
 establishing scp connection with my amd64 computing machines).
 Absolutely no need of multicore, rather, a single fast processor
 would be of use for scientific purposes as parallelized codes are
 rare stuff. I thought to by a second hand single-processor
 motherboard but it might result as a bad jump into the past. Also, I
 have a couple of unused 150GB Raptor WD HDs that could only be used
 if nthe motherboard has SATA connections (better two, so as to set
 up a RAID1).
 Any suggestion on which motherboard (or motherboard type if you
 prefer to be uncommittal about brand) would be greatly appreciated.

 If I wanted the fastest-available single-core CPU, I'd look for these
 on Ebay: Pentium D 900 at 3.4 GHz Pentium 4 6X1 at 3.8 GHz

As a bonus, you'll be able to save some money on heating in the Winter :)


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RE: motherboad for desktop

2009-08-24 Thread David Christensen
Francesco Pietra wrote:
 new [desktop motherboard] for the same service (running 32bit graphic
 scientific programs, besides office use, and establishing scp
 connection with my amd64 computing machines).  Absolutely no need of
 multicore, rather, a single fast processor would be of use for
 scientific purposes as parallelized codes are rare stuff.

See this for some background:

http://lists.debian.org/debian-user/2009/07/msg01216.html


I'm currently considering the Intel DG45ID motherboard.  It has everything I 
need, including Intel's best video chip (X4500ID):


http://www.intel.com/products/desktop/motherboards/DG45ID/DG45ID-overview.htm


The DG45ID does not support the older generation Pentium processors (4 and D), 
which should tell you something.  Furthermore, this benchmark shows that modern 
Core 2 Duo cores are faster than any Pentium, past or present (see 
http://en.wikipedia.org/wiki/Moore's_law ):

http://www.cpubenchmark.net/cpu_list.php

Intel Pentium 4 3.80GHz   615/1 =  615/core

Intel Pentium D 3.40GHz   900/2 =  450/core

Intel Pentium E6300 @ 2.80GHz1811/2 =  905/core

Intel Core2 Duo E7400 @ 2.80GHz  1871/2 =  935/core

Intel Core2 Duo E8600 @ 3.33GHz  2417/2 = 1208/core

The modern Core 2 Quad cores run at lower frequencies (heat?):

Intel Core2 Quad Q8300 @ 2.50GHz 3553/4 =  888/core

Intel Core2 Quad Q9650 @ 3.00GHz 4426/4 = 1106/core

But, the smallest i7 core is faster than any Core 2:

Intel Core i7 920 @ 2.67GHz  5444/4 = 1361/core


If 3-D video is important, Intel's G45 doesn't compare against generation 9 and 
10 NVIDIA cards:

http://www.videocardbenchmark.net/gpu_list.php

G45/G43 Express Chipset  191

GeForce 9500 GT  376

GeForce GTX 260 1719

(NVIDIA's drivers seem to work better now, but are still closed source.)


So, I'm also considering the Intel DX58SO motherboard plus an NVIDIA card:


http://www.intel.com/products/desktop/motherboards/DX58SO/DX58SO-overview.htm

The DX58SO has over-clocking capabilities, if you're into that (I typically run 
my machines at specified settings):


http://benchmarkreviews.com/index.php?option=com_contenttask=viewid=262Itemid=69limit=1limitstart=9


As always, benchmarks must be taken with a grain of salt (gram? gallon?).  If 
you have a specification application in mind and can map it to specific 
assembler/ compiler/ processor/ GPU features, disregard all of the above.  
Also, recompiling/ redesigning your application for multiprocessing will allow 
for multi-core possibilities and beyond ( 
http://en.wikipedia.org/wiki/Beowulf_cluster ).


Surfing for prices and min-maxing a modest 32-bit motherboard + CPU + RAM [+ 
video] setup:

~$300 for DG45ID/ Core 2 Duo/ 2 GB

~$450 for DG45ID/ Core 2 Quad/ 4 GB

 ~$700 for DX58SO/ Core i7/ 3 GB/ NVIDIA PCIe x16


Give Page's Law ( http://en.wikipedia.org/wiki/Page's_law ) and my personal 
usage patterns, I'd label the DG45ID/ Core 2 Duo as a 3+ year desktop and the 
DX58SO as a 5+ year desktop.


HTH,

David



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RE: motherboad for desktop

2009-08-24 Thread Emanoil Kotsev
David Christensen wrote:

 I'm currently considering the Intel DG45ID motherboard.  It has everything
 I need, including Intel's best video chip (X4500ID):

if you need this for a server - yes.

I think I bought earlier this year this same mainboard

I'm not very happy with intel graphic chipsets but for the price it's not
bad. I'm using it for a server I have at home and I thought I could use
also as a workstation, but there was some delay in rendering graphics (when
watching video or tv. 

The board itself had a really stupid bios, because it could not recognize
and remember all of the drives I attached to the board (look for info on
that if other people have the issue).
As it's server I can live with that but when rebooting I need to try several
time (going to the bios and checking if there are all the drives recognized
and listed)

regardding the video I had following situation. The machine stopped suddenly
and didn't come back until next day. The next day it booted (almost
normally - see above). Since then I'm not trying to use it as a workstation
and it never happened again, so my suspicion is that it overheated
somewhere in the graphics part and had to cool down over night.

Also it came out recently that intel was selling bundled sh*t to pc
manufacturers, causing disadvantage to competitors and they were sued
(don't remember if the EU or in the US - I think it was the EU)

Just be careful!

regards


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RE: motherboad for desktop

2009-08-23 Thread Kevin Ross
 From: Francesco Pietra [mailto:chiendar...@gmail.com] 
 Sent: Sunday, August 23, 2009 9:02 AM
 
 Hi:
 My old K7S5A (SiS735 chipset) Athlon i386 lenny desktop has died and I
 am wondering how to set up a new one for the same service (running
 32bit graphic scientific programs, besides office use, and
 establishing scp connection with my amd64 computing machines).
 Absolutely no need of multicore, rather, a single fast processor would
 be of use for scientific purposes as parallelized codes are rare
 stuff. I thought to by a second hand single-processor motherboard but
 it might result as a bad jump into the past. Also, I have a couple of
 unused 150GB Raptor WD HDs that could only be used if nthe motherboard
 has SATA connections (better two, so as to set up a RAID1).
 
 Any suggestion on which motherboard (or motherboard type if you prefer
 to be uncommittal about brand) would be greatly appreciated.
 
 Thanks
 
 francesco pietra

If you want a fast, single-core processor, the Pentium 4 3.8 GHz can be
found on eBay.  It uses a LGA775 socket, so the motherboard can be upgraded
to a Core 2 Duo or Core 2 Quad (but not Core i7) in the future, if the
programs you run ever get upgraded to take advantage of multiple cores, or
if you want to run multiple sing-threaded programs concurrently.

Once you decide on the socket type (in this case LGA775), then it just comes
down to what other features you want on a motherboard, and buying one from
one of the major brands (Asus, Gigabyte, etc) that matches your feature list
and budget.

Any LGA775 board you buy will have multiple SATA connectors on it.  They
usually have fake RAID, but I don't recommend you use it.  Instead, use
Linux software RAID.


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Re: motherboad for desktop

2009-08-23 Thread Ron Johnson

On 2009-08-23 11:01, Francesco Pietra wrote:

Hi:
My old K7S5A (SiS735 chipset) Athlon i386 lenny desktop has died and I
am wondering how to set up a new one for the same service (running
32bit graphic scientific programs, besides office use, and
establishing scp connection with my amd64 computing machines).
Absolutely no need of multicore, rather, a single fast processor would
be of use for scientific purposes as parallelized codes are rare
stuff. I thought to by a second hand single-processor motherboard but
it might result as a bad jump into the past. Also, I have a couple of
unused 150GB Raptor WD HDs that could only be used if nthe motherboard
has SATA connections (better two, so as to set up a RAID1).

Any suggestion on which motherboard (or motherboard type if you prefer
to be uncommittal about brand) would be greatly appreciated.


If I wanted the fastest-available single-core CPU, I'd look for 
these on Ebay:

Pentium D 900 at 3.4 GHz
Pentium 4 6X1 at 3.8 GHz

http://www.intel.com/pressroom/kits/quickreffam.htm

Then I'd tailor my mobo purchase (again from Ebay), around that.

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Re: motherboad for desktop

2009-08-23 Thread Justin The Cynical

Francesco Pietra wrote:

Hi:
My old K7S5A (SiS735 chipset) Athlon i386 lenny desktop has died and I
am wondering how to set up a new one for the same service (running
32bit graphic scientific programs, besides office use, and
establishing scp connection with my amd64 computing machines).


That machine has been around for a while, yes?

Looking at the specs and a review that mentions that they would have 
liked to see the AMR slot removed in favour of another PCI or perhaps 
even an ISA, I'm going to guess this isn't what one would call an 
insanely fast machine.  :-)




Absolutely no need of multicore, rather, a single fast processor would
be of use for scientific purposes as parallelized codes are rare
stuff. I thought to by a second hand single-processor motherboard but
it might result as a bad jump into the past. Also, I have a couple of
unused 150GB Raptor WD HDs that could only be used if nthe motherboard
has SATA connections (better two, so as to set up a RAID1).

Any suggestion on which motherboard (or motherboard type if you prefer
to be uncommittal about brand) would be greatly appreciated.



Motherboard manufactures all have good and bad designs and runs, so 
recommending a brand isn't such a good approach IMO.


Anyway, (and I'm sure that you probably already know this) virtually any 
board easily available today is going to make use of DDR2 memory, will 
have SATA ports (usually 4, but I've seen some very low end ones that 
only had a pair), and may require a 24-pin power supply (some will still 
run with 20 pin or you might be able to get away with a 20 to 24 pin 
adapter).


Another thing to consider is PCI slots.  I do not know how your old 
system is set up, but that board has five PCI slots.  That many PCI 
slots is becoming hard to find on current motherboards with the average 
being three, perhaps four, sometimes as low as a single slot.


Myself, if I had a system similar to what you listed at the beginning, 
I'd find one of those low-end cpu/motherboard combo deals that show up 
at Fry's or newegg every so often.  These usually consist of a Core2 
based Celeron and an ECS (sometimes biostar) board.  In my experience, 
the Core2-based Celerons running at around 2 Ghz (or less) are every bit 
as capable as a P4 3 GHz, but use considerably less power and generate a 
heck of a lot less heat.


If I needed a bit more CPU grunt, I'd get a CPU that is built on the 
Core2 platform that isn't a Celeron.  IMO, there isn't much point in not 
getting a multi-core CPU.  Looking at Newegg for example, a 1.8 Celeron 
single core and a 2.2 Celeron dual core has a price difference of 10 US 
dollars, and just about any CPU commonly available is going to have 
64-bit capabilities, not that you have to us them.


Ultimately it depends on what your budget is, what is available in your 
area, and how much you want the newer board to do.  But unless you are 
going to look at a machine that is about the same vintage as the old 
system, you are going to have to pick up more than just a new board.



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Re: motherboad for desktop

2009-08-23 Thread Charles Kroeger
 virtually any  board easily available today is going to make use of DDR2 
 memory

What about DDR3 memory, is that preferable?

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