[H] ram question
I just received my crucial ram. All came packed as kits. But, the plastic cases the modules are in do not show any ESD markings I would expect to see. Odd. Just two plastic cases in a cardboard sleeve. Is this now normal? Very odd. I have many spare ram ESD sleeves; so I am not yet concerned. Eventually all of this new ram will be in use (well if all of it works?). Silly question: Does DDR3 ram carry any sort of PC3xxx value? Or, are we finally behind all that silly Performance Rating business now? It does say that it is rated at 1333MHz, even though I doubt I will ever drive it there... :) Thank, Duncan
Re: [H] ram question
I just received my crucial ram. All came packed as kits. But, the plastic cases the modules are in do not show any ESD markings I would expect to see. Odd. Just two plastic cases in a cardboard sleeve. Is this now normal? Very odd. Yes. My Corsair (qty...10?) and OCZ kits (qty 2) all came in clear plastic packaging. Haven't had an issue yet. I suppose that it's to improve their shelf appeal, but I, too, would prefer they come in antistatic bags. Silly question: Does DDR3 ram carry any sort of PC3xxx value? Or, are we finally behind all that silly Performance Rating business now? It does say that it is rated at 1333MHz, even though I doubt I will ever drive it there... :) Thank, Duncan Yes. 1066MT/s (which is actually 533MHz i/o bus clock rate, double pumped), DDR3 is PC3-8500. At 1333MT/s (667MHz), PC3-10600 1600MT/s (800MHz), PC3-12800. The numbers are each relevant, as they signify some element of the module. The PC3- is the peak throughput in MB/s, the DDR3-xxx is the number of transfers per second, in millions. (MT/s) Then you have CAS latencies...
Re: [H] ram question
Greg, Could you be a bit more expansive? I am still confused by your explanation. Perhaps we are just talking bench racing again? I have ram that is Intel-rated PC66, PC100, and PC133. I know that these numbers follow the Intel FSB freq. Then it gets confusing to me because then I jump to ram for AMD that is PC3200 and PC3500. Perhaps not. I only followed the PC labels while on the AMD-side really. If only to try and equate AMD to Intel. I never did like AMD's PC ratings. I just lived with them. Once I complete my conversion, I will be fully back in Intel-land. Since I have moved to DDR3 by choice, I figure that is a forward choice. Does the PC rating really mean anything with an Intel focus? Thank you. I feel the cheap plastic cases are a bad way to ship what we discuss as an expensive product. Letter to Crucial is in process! Glad to know you have had no problems yet. Best, Duncan At 21:11 11/10/2008 -0600, you wrote: I just received my crucial ram. All came packed as kits. But, the plastic cases the modules are in do not show any ESD markings I would expect to see. Odd. Just two plastic cases in a cardboard sleeve. Is this now normal? Very odd. Yes. My Corsair (qty...10?) and OCZ kits (qty 2) all came in clear plastic packaging. Haven't had an issue yet. I suppose that it's to improve their shelf appeal, but I, too, would prefer they come in antistatic bags. Silly question: Does DDR3 ram carry any sort of PC3xxx value? Or, are we finally behind all that silly Performance Rating business now? It does say that it is rated at 1333MHz, even though I doubt I will ever drive it there... :) Thank, Duncan Yes. 1066MT/s (which is actually 533MHz i/o bus clock rate, double pumped), DDR3 is PC3-8500. At 1333MT/s (667MHz), PC3-10600 1600MT/s (800MHz), PC3-12800. The numbers are each relevant, as they signify some element of the module. The PC3- is the peak throughput in MB/s, the DDR3-xxx is the number of transfers per second, in millions. (MT/s) Then you have CAS latencies...
Re: [H] ram question
Greg, Could you be a bit more expansive? I am still confused by your explanation. Perhaps we are just talking bench racing again? I have ram that is Intel-rated PC66, PC100, and PC133. I know that these numbers follow the Intel FSB freq. Then it gets confusing to me because then I jump to ram for AMD that is PC3200 and PC3500. PC66, PC100, etc. were used to refer to the memory clock speed for Single Data Rate (SDR) original SDRAM. With the advent of DDR, the PC designation has been used to refer to the memory's maximum theoretical throughput in MB/s. DDR-266 is PC-2100 DDR2-800 is PC2-6400 DDR3-1333 is PC3-10600 The DDR[2/3]- is used to refer to the number of transfers per second. DDR added the ability to transfer data on both the rise and the fall of the i/o bus clock cycle. Whereas PC-133 transfers 133 million times per second on a 133MHz bus, DDR-266 transfers 266 million times per second, on the same 133MHz bus. Since the memory bus isn't actually running at a 266MHz actual clock speed, but that's the effective clock speed, the proper term is 266MT/s (Million Transfers/second). 133MHz clock rate * 2 transfers per clock = 266 million transfers per second. 266MT/s * 64 bits (bus width in bits) / 8 (bits in a byte) = 2128MB/s...rounded to 2100MB/s. Hence the PC-2100 designation. (Note that there is some additional rounding here on my part, since a 133Mhz bus is actually 133,333,333Hz) Your DDR3-1333, PC3-10600 memory operates at a 667MHz i/o bus, 1333MT/s, and is capable of 10,600MB/s of throughput per stick. 667MHz clock * 2 = 1333MT/s, 1333MT/s * 64 bits bus width / 8 bits in a byte = ~10600MB/s. This has nothing to do with AMD's performance rating system (ie: Athlon XP 2500+, Athlon 64 3000+).
Re: [H] ram question
Greg, OMG! I am so behind. Very nice explanation. I appreciate this. How do you keep on top of this? Thank you. Duncan At 23:00 11/10/2008 -0600, you wrote: Greg, Could you be a bit more expansive? I am still confused by your explanation. Perhaps we are just talking bench racing again? I have ram that is Intel-rated PC66, PC100, and PC133. I know that these numbers follow the Intel FSB freq. Then it gets confusing to me because then I jump to ram for AMD that is PC3200 and PC3500. PC66, PC100, etc. were used to refer to the memory clock speed for Single Data Rate (SDR) original SDRAM. With the advent of DDR, the PC designation has been used to refer to the memory's maximum theoretical throughput in MB/s. DDR-266 is PC-2100 DDR2-800 is PC2-6400 DDR3-1333 is PC3-10600 The DDR[2/3]- is used to refer to the number of transfers per second. DDR added the ability to transfer data on both the rise and the fall of the i/o bus clock cycle. Whereas PC-133 transfers 133 million times per second on a 133MHz bus, DDR-266 transfers 266 million times per second, on the same 133MHz bus. Since the memory bus isn't actually running at a 266MHz actual clock speed, but that's the effective clock speed, the proper term is 266MT/s (Million Transfers/second). 133MHz clock rate * 2 transfers per clock = 266 million transfers per second. 266MT/s * 64 bits (bus width in bits) / 8 (bits in a byte) = 2128MB/s...rounded to 2100MB/s. Hence the PC-2100 designation. (Note that there is some additional rounding here on my part, since a 133Mhz bus is actually 133,333,333Hz) Your DDR3-1333, PC3-10600 memory operates at a 667MHz i/o bus, 1333MT/s, and is capable of 10,600MB/s of throughput per stick. 667MHz clock * 2 = 1333MT/s, 1333MT/s * 64 bits bus width / 8 bits in a byte = ~10600MB/s. This has nothing to do with AMD's performance rating system (ie: Athlon XP 2500+, Athlon 64 3000+).
Re: [H] RAM question
Hello Heyes, Although, you maybe correct but I actually use PC3500 DDR2 memory in my current system. The memory is actually clocked at 1066MHz on my 780i Motherboard. Let me tell you it is sweet running at that speed compared to 800MHz memory. Here's the memory I use http://www.corsair.com/products/go.aspx?pn=QUAD2X4096-8500C5DF Regards, --- Original Message --- PC3200 - probably. 3500? There is no such thing. That's gimmicky ram for the OC genre, and a wild card if it will move forward. Date: Mon, 18 Aug 2008 14:24:29 -0400 To: hardware@hardwaregroup.com From: [EMAIL PROTECTED] Subject: [H] RAM question Thank you for your shares about SATA. Question now about RAM. I have current DDR RAM rated PC3200 and PC3500. Can this 3200/3500 DDR RAM move forward? I will give that all my PC133, PC100, and PC66 DIMMS get sold, or, held as spares for older machines 'not yet ready' for upgrade. The plan anyway :) Thank you, Duncan _ Talk to your Yahoo! Friends via Windows Live Messenger. Find out how. http://www.windowslive.com/explore/messenger?ocid=TXT_TAGLM_WL_messenger_yahoo_082008= -- Tim The Beave Lider E-mail: [EMAIL PROTECTED] MSN: [EMAIL PROTECTED] AIM: dowbeave
[H] RAM question
Thank you for your shares about SATA. Question now about RAM. I have current DDR RAM rated PC3200 and PC3500. Can this 3200/3500 DDR RAM move forward? I will give that all my PC133, PC100, and PC66 DIMMS get sold, or, held as spares for older machines 'not yet ready' for upgrade. The plan anyway :) Thank you, Duncan
Re: [H] RAM question
On Aug 18, 2008, at 2:24 PM, DHSinclair wrote: Thank you for your shares about SATA. Question now about RAM. I have current DDR RAM rated PC3200 and PC3500. Can this 3200/3500 DDR RAM move forward? I will give that all my PC133, PC100, and PC66 DIMMS get sold, or, held as spares for older machines 'not yet ready' for upgrade. The plan anyway :) Thank you, Duncan duncan, There's life in those old computers yet! I just popped an old 256M PC133 dimm out of a just retired OS9 mac into a 666mhz pentium3 running windows 2k. Still going strong! also just got a 300gb pata drive for a second old mac computer to try to keep it running a bit longer. Scott
Re: [H] RAM question
Scott, I read your share twice. Good. I will push forward. Maybe. I do not plan to do this on the cheap. Yes, I believe my old computers can be dragged into the new world. (I have been out of it for a while.. :) ) When I do this it will be a complete conversion (1 machine at a time) from what I now have;.. to what I may end up with. !! (Personally, I've really always been surprised when whatever OS loaded and let me complete the install.) I will pay, if necessary. I will attempt to stay on this list. I plan to survive and grasp the new tech. Should I fail, I will be gone. Best, D snip duncan, There's life in those old computers yet! I just popped an old 256M PC133 dimm out of a just retired OS9 mac into a 666mhz pentium3 running windows 2k. Still going strong! also just got a 300gb pata drive for a second old mac computer to try to keep it running a bit longer. Scott
