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#11
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Some of the PC3200 Corsair memory is 8-3-3-3 at 200Mhz. For example: Alan "Jim" wrote in message news:cynfc.3054$Yf6.468@fed1read07... Here's your memory ( http://www.corsairmicro.com/corsair/...512-3200c2.pdf ), says nothing about PC2700, so I don't know where that's coming from. Suppose to run 200MHz clock, 2.5-3-3-6 on AMD, a little faster on Intel (2-3-3-6). I assume this is the SPD results during config. So there's no reason you shouldn't be able to run the Athlon (@ 166MHz clock) in sync (1:1) w/ your memory (underclocked @ 166MHz). Now, as you increase the CPU FSB, are you saying you are getting memory errors?? I assume the CPU FSB will OC even a little, so it would surprise me to see errors w/ even 167MHz (1:1). What I'm wondering is whether maybe you're actually trying to run async (e.g., 5:6, 166 / 5 * 6 = 200, not even sure this is possible w/ NForce2 chipset, just speculating), so therefore everytime you OC the CPU FSB, you're also overclocking the memory! If the memory is already tapped out at PC3200 (200MHz clock), especially if perhaps you're trying to run 2-3-3-6 (not the certified 2.5.-3-3-6), then perhaps it just dies at even a hint above 200MHz clock. I'm just speculating, but it's my guess this is what you're trying to do. Remember, every time you OC the CPU FSB, the memory is OC'd too! That's why the proper thing to do w/ this CPU and memory is run 1:1! You're trying to OC the FSB, but you don't want the memory holding you back. If you insist on running the memory "at spec", 400MHz DDR, 5:6, you're asking for trouble! If the memory has a little headroom left over, you'll make a little progress w/ the FSB overclock. If not, the FSB overclock will die a quick death. It sounds to me like this latter scenario is the problem HTH Jim wrote in message ink.net... I have a quick question about my memory and setup in terms of overclocking.. I purchased Corsair PC3200 memory with the expectation that it can run at 400mhz, but it seems to fail in this ambition (i get a memory error in the bios, have to reboot the machine). When I when I try to overclock the FSB to 400Mhz in the bios (anything over 167) I get memory errors... motherboard: A7N8X 2.0 (which should run at 400mhz ..) cpu: AthlonXP 2600+ 333 SiSoftware Sandra reports my memory as the following (I have 2x512mb): Memory Module 1 : Corsair CMX512-3200C2 512MB 16x(32Mx8) DDR-SDRAM PC2700U-233-700 (CL2.5 up to 167MHz) (CL2 up to 167MHz) Memory Module 2 : Corsair CMX512-3200C2 512MB 16x(32Mx8) DDR-SDRAM PC2700U-233-700 (CL2.5 up to 167MHz) (CL2 up to 167MHz) I don't understand why it says "PC2700" in there at the end, but '3200' in the beginning. When I bought this memory it was listed as PC3200. And it says it is limited to 167MHz, which also seems to be the barrier to the BIOS when I try to overclock.. (i can't get it higher than 333mhz fsb) any ideas as to what my problem is? Thanks very much dxtx |
#12
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I gues I should have included the example: http://www.newegg.com/app/ViewProduc...145-498&depa=0 This should not show up as C2, however. Alan "Alan Wright" alanatyahoodotcom wrote in message ... Some of the PC3200 Corsair memory is 8-3-3-3 at 200Mhz. For example: Alan "Jim" wrote in message news:cynfc.3054$Yf6.468@fed1read07... Here's your memory ( http://www.corsairmicro.com/corsair/...512-3200c2.pdf ), says nothing about PC2700, so I don't know where that's coming from. Suppose to run 200MHz clock, 2.5-3-3-6 on AMD, a little faster on Intel (2-3-3-6). I assume this is the SPD results during config. So there's no reason you shouldn't be able to run the Athlon (@ 166MHz clock) in sync (1:1) w/ your memory (underclocked @ 166MHz). Now, as you increase the CPU FSB, are you saying you are getting memory errors?? I assume the CPU FSB will OC even a little, so it would surprise me to see errors w/ even 167MHz (1:1). What I'm wondering is whether maybe you're actually trying to run async (e.g., 5:6, 166 / 5 * 6 = 200, not even sure this is possible w/ NForce2 chipset, just speculating), so therefore everytime you OC the CPU FSB, you're also overclocking the memory! If the memory is already tapped out at PC3200 (200MHz clock), especially if perhaps you're trying to run 2-3-3-6 (not the certified 2.5.-3-3-6), then perhaps it just dies at even a hint above 200MHz clock. I'm just speculating, but it's my guess this is what you're trying to do. Remember, every time you OC the CPU FSB, the memory is OC'd too! That's why the proper thing to do w/ this CPU and memory is run 1:1! You're trying to OC the FSB, but you don't want the memory holding you back. If you insist on running the memory "at spec", 400MHz DDR, 5:6, you're asking for trouble! If the memory has a little headroom left over, you'll make a little progress w/ the FSB overclock. If not, the FSB overclock will die a quick death. It sounds to me like this latter scenario is the problem HTH Jim wrote in message ink.net... I have a quick question about my memory and setup in terms of overclocking.. I purchased Corsair PC3200 memory with the expectation that it can run at 400mhz, but it seems to fail in this ambition (i get a memory error in the bios, have to reboot the machine). When I when I try to overclock the FSB to 400Mhz in the bios (anything over 167) I get memory errors... motherboard: A7N8X 2.0 (which should run at 400mhz ..) cpu: AthlonXP 2600+ 333 SiSoftware Sandra reports my memory as the following (I have 2x512mb): Memory Module 1 : Corsair CMX512-3200C2 512MB 16x(32Mx8) DDR-SDRAM PC2700U-233-700 (CL2.5 up to 167MHz) (CL2 up to 167MHz) Memory Module 2 : Corsair CMX512-3200C2 512MB 16x(32Mx8) DDR-SDRAM PC2700U-233-700 (CL2.5 up to 167MHz) (CL2 up to 167MHz) I don't understand why it says "PC2700" in there at the end, but '3200' in the beginning. When I bought this memory it was listed as PC3200. And it says it is limited to 167MHz, which also seems to be the barrier to the BIOS when I try to overclock.. (i can't get it higher than 333mhz fsb) any ideas as to what my problem is? Thanks very much dxtx |
#13
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Hmm..., I don't use Corsair myself, but 3-3-3-8 is considered "extreme" for
PC3200?! Heck, I wouldn't even consider this acceptable for PC3500. And $155 for only 512MB of it, to boot. The whole DDR scene is out of control, pricing is almost mindless, just glad I don't need it. My goodness, I bought Kingston HyperX KHX3200AK2, 1GB (2 x 512), 2-3-2-6-1 (runs 2-3-2-5-1 up to 218MHz), for $176 back in late Dec '03 ( http://www.ec.kingston.com/shop/part...=KHX3200AK2/1G ) .. And only 10 days ago, you could have picked up Kingston HyperX PC4000, 1GB, for $233, promo'd by Kingston direct. Today, that same PC4000 is $325! On sale no less. ( http://www.ec.kingston.com/shop/part...o=KHX4000K2/1G ) This Corsair seems to be a *major* ripoff, if you ask me, even w/ today's DDR prices. HTH Jim "Alan Wright" alanatyahoodotcom wrote in message ... I gues I should have included the example: http://www.newegg.com/app/ViewProduc...145-498&depa=0 This should not show up as C2, however. Alan "Alan Wright" alanatyahoodotcom wrote in message ... Some of the PC3200 Corsair memory is 8-3-3-3 at 200Mhz. For example: Alan "Jim" wrote in message news:cynfc.3054$Yf6.468@fed1read07... Here's your memory ( http://www.corsairmicro.com/corsair/...512-3200c2.pdf ), says nothing about PC2700, so I don't know where that's coming from. Suppose to run 200MHz clock, 2.5-3-3-6 on AMD, a little faster on Intel (2-3-3-6). I assume this is the SPD results during config. So there's no reason you shouldn't be able to run the Athlon (@ 166MHz clock) in sync (1:1) w/ your memory (underclocked @ 166MHz). Now, as you increase the CPU FSB, are you saying you are getting memory errors?? I assume the CPU FSB will OC even a little, so it would surprise me to see errors w/ even 167MHz (1:1). What I'm wondering is whether maybe you're actually trying to run async (e.g., 5:6, 166 / 5 * 6 = 200, not even sure this is possible w/ NForce2 chipset, just speculating), so therefore everytime you OC the CPU FSB, you're also overclocking the memory! If the memory is already tapped out at PC3200 (200MHz clock), especially if perhaps you're trying to run 2-3-3-6 (not the certified 2.5.-3-3-6), then perhaps it just dies at even a hint above 200MHz clock. I'm just speculating, but it's my guess this is what you're trying to do. Remember, every time you OC the CPU FSB, the memory is OC'd too! That's why the proper thing to do w/ this CPU and memory is run 1:1! You're trying to OC the FSB, but you don't want the memory holding you back. If you insist on running the memory "at spec", 400MHz DDR, 5:6, you're asking for trouble! If the memory has a little headroom left over, you'll make a little progress w/ the FSB overclock. If not, the FSB overclock will die a quick death. It sounds to me like this latter scenario is the problem HTH Jim wrote in message ink.net... I have a quick question about my memory and setup in terms of overclocking.. I purchased Corsair PC3200 memory with the expectation that it can run at 400mhz, but it seems to fail in this ambition (i get a memory error in the bios, have to reboot the machine). When I when I try to overclock the FSB to 400Mhz in the bios (anything over 167) I get memory errors... motherboard: A7N8X 2.0 (which should run at 400mhz ..) cpu: AthlonXP 2600+ 333 SiSoftware Sandra reports my memory as the following (I have 2x512mb): Memory Module 1 : Corsair CMX512-3200C2 512MB 16x(32Mx8) DDR-SDRAM PC2700U-233-700 (CL2.5 up to 167MHz) (CL2 up to 167MHz) Memory Module 2 : Corsair CMX512-3200C2 512MB 16x(32Mx8) DDR-SDRAM PC2700U-233-700 (CL2.5 up to 167MHz) (CL2 up to 167MHz) I don't understand why it says "PC2700" in there at the end, but '3200' in the beginning. When I bought this memory it was listed as PC3200. And it says it is limited to 167MHz, which also seems to be the barrier to the BIOS when I try to overclock.. (i can't get it higher than 333mhz fsb) any ideas as to what my problem is? Thanks very much dxtx |
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