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question on my PC3200
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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wrote: 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 Run CPUZ and then click the about tab and then click on memory SPD. You can find it here. http://www.cpuid.com/cpuz.php |
#5
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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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"neopolaris" . wrote in message ... wrote: 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 Run CPUZ and then click the about tab and then click on memory SPD. You can find it here. http://www.cpuid.com/cpuz.php Ok, so CPUZ says Corsair DDR-SDRAM PC2700 - 512MB for each DIMM(#1 and #2) it also says Frequency 166Mhz is it reporting PC2700 because it is inferring that from the Frequency? ie: if i changed the Frequency in the BIOS to 200Mhz, would CPUZ tell me it was PC3200? The reason I ask is that I bought (and paid for) PC3200 from newegg a couple years ago.. this makes me nervous that it is reporting the PC2700 when I had bought PC3200 :P Thanks, dxtx |
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wrote: "neopolaris" . wrote in message ... wrote: 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 Run CPUZ and then click the about tab and then click on memory SPD. You can find it here. http://www.cpuid.com/cpuz.php Ok, so CPUZ says Corsair DDR-SDRAM PC2700 - 512MB for each DIMM(#1 and #2) it also says Frequency 166Mhz is it reporting PC2700 because it is inferring that from the Frequency? ie: if i changed the Frequency in the BIOS to 200Mhz, would CPUZ tell me it was PC3200? The reason I ask is that I bought (and paid for) PC3200 from newegg a couple years ago.. this makes me nervous that it is reporting the PC2700 when I had bought PC3200 :P Thanks, dxtx CPUZ reads the info put into the memory from the manufacturer. If it says it's PC2700, it probably is. Plus, PC3200 wasn't around a couple years ago. |
#8
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"neopolaris" . wrote in message ...
wrote: "neopolaris" . wrote in message ... wrote: 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 Run CPUZ and then click the about tab and then click on memory SPD. You can find it here. http://www.cpuid.com/cpuz.php Ok, so CPUZ says Corsair DDR-SDRAM PC2700 - 512MB for each DIMM(#1 and #2) it also says Frequency 166Mhz is it reporting PC2700 because it is inferring that from the Frequency? ie: if i changed the Frequency in the BIOS to 200Mhz, would CPUZ tell me it was PC3200? The reason I ask is that I bought (and paid for) PC3200 from newegg a couple years ago.. this makes me nervous that it is reporting the PC2700 when I had bought PC3200 :P Thanks, dxtx CPUZ reads the info put into the memory from the manufacturer. If it says it's PC2700, it probably is. Plus, PC3200 wasn't around a couple years ago. Well, that sucks. Not only did I choose PC3200 from newegg when I ordered it (i still have the invoice) It even has a label on the physical memory that says: "CMX512-3200C2-XMS3202v1.1" and this is from the newegg invoice: (dated October 3rd, 2002): DDRAM 512MB 32MX8 PC-3200C2 COR% suck, suck, suck. dxtx |
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wrote in message ink.net... "neopolaris" . wrote in message ... wrote: "neopolaris" . wrote in message ... wrote: 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 Run CPUZ and then click the about tab and then click on memory SPD. You can find it here. http://www.cpuid.com/cpuz.php Ok, so CPUZ says Corsair DDR-SDRAM PC2700 - 512MB for each DIMM(#1 and #2) it also says Frequency 166Mhz is it reporting PC2700 because it is inferring that from the Frequency? ie: if i changed the Frequency in the BIOS to 200Mhz, would CPUZ tell me it was PC3200? The reason I ask is that I bought (and paid for) PC3200 from newegg a couple years ago.. this makes me nervous that it is reporting the PC2700 when I had bought PC3200 :P Thanks, dxtx CPUZ reads the info put into the memory from the manufacturer. If it says it's PC2700, it probably is. Plus, PC3200 wasn't around a couple years ago. Well, that sucks. Not only did I choose PC3200 from newegg when I ordered it (i still have the invoice) It even has a label on the physical memory that says: "CMX512-3200C2-XMS3202v1.1" and this is from the newegg invoice: (dated October 3rd, 2002): DDRAM 512MB 32MX8 PC-3200C2 COR% suck, suck, suck. dxtx I really wouldn't take any notice at all of what CPUz says. All it is doing is reading what's in the ram's SPD chip. The SPD can be programmed with any information the manufacturer wants to put in there and it can be very misleading. Sometimes they are more concerned with making sure the memory will run when an inexperienced user just selects the "by spd" timings in the bios. So they want to make sure the SPD numbers are nice and conservative. I have 2 sticks of OCZ PC3500 ram. One of them says it is 3200 and the other says it is 2700. But both will run 235 MHz no problems at all. What voltage are you trying to run your ram at? Lots of memory needs more volts than you think it might. I would try setting it at 2.7v or even 2.8v and then see how it runs. And don't be too aggressive with the timings to start with. Try 11-3-3 cas2 or 11-3-3 Cas2.5 and see how you get on. If the sticks won't do 200MHz at 11-3-3 Cas2.5 at 2.7v, then I would say you have a problem. Chip. |
#10
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Chip wrote: wrote in message ink.net... "neopolaris" . wrote in message ... wrote: "neopolaris" . wrote in message ... wrote: 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 Run CPUZ and then click the about tab and then click on memory SPD. You can find it here. http://www.cpuid.com/cpuz.php Ok, so CPUZ says Corsair DDR-SDRAM PC2700 - 512MB for each DIMM(#1 and #2) it also says Frequency 166Mhz is it reporting PC2700 because it is inferring that from the Frequency? ie: if i changed the Frequency in the BIOS to 200Mhz, would CPUZ tell me it was PC3200? The reason I ask is that I bought (and paid for) PC3200 from newegg a couple years ago.. this makes me nervous that it is reporting the PC2700 when I had bought PC3200 :P Thanks, dxtx CPUZ reads the info put into the memory from the manufacturer. If it says it's PC2700, it probably is. Plus, PC3200 wasn't around a couple years ago. Well, that sucks. Not only did I choose PC3200 from newegg when I ordered it (i still have the invoice) It even has a label on the physical memory that says: "CMX512-3200C2-XMS3202v1.1" and this is from the newegg invoice: (dated October 3rd, 2002): DDRAM 512MB 32MX8 PC-3200C2 COR% suck, suck, suck. dxtx I really wouldn't take any notice at all of what CPUz says. All it is doing is reading what's in the ram's SPD chip. The SPD can be programmed with any information the manufacturer wants to put in there and it can be very misleading. Sometimes they are more concerned with making sure the memory will run when an inexperienced user just selects the "by spd" timings in the bios. So they want to make sure the SPD numbers are nice and conservative. I have 2 sticks of OCZ PC3500 ram. One of them says it is 3200 and the other says it is 2700. But both will run 235 MHz no problems at all. What voltage are you trying to run your ram at? Lots of memory needs more volts than you think it might. I would try setting it at 2.7v or even 2.8v and then see how it runs. And don't be too aggressive with the timings to start with. Try 11-3-3 cas2 or 11-3-3 Cas2.5 and see how you get on. If the sticks won't do 200MHz at 11-3-3 Cas2.5 at 2.7v, then I would say you have a problem. Chip. All in all it is still very strange for the mixed readings with Corsair memory. A generic brand maybe, but not Corsair. I wouldn't trust what OCZ registers their sticks at either. He mentions the label on the "physical memory". I've never taken the heatspreaders off my XMS so I don't know if there is a sticker on that too. I also have sticks that aren't identical. See below. I dunno, maybe he's got PC3200 heatspreaders on PC2700 memory lol CPU-Z version 1.22 Memory Modules Serial Presence Detect (SPD) Module #1 General Memory type DDR-SDRAM Manufacturer (ID) Corsair (7F7F9E0000000000) Size 256 MBytes Max bandwidth PC3200 (200 MHz) Part number CMX256A-3200C2 Timings table Frequency (MHz) 166 200 CAS# 2.0 2.5 RAS# to CAS# delay 3 3 RAS# Precharge 3 3 TRAS# 7 8 Module #2 General Memory type DDR-SDRAM Manufacturer (ID) Corsair (7F7F9E0000000000) Size 256 MBytes Max bandwidth PC3200 (200 MHz) Part number CMX256A-3200LL Timings table Frequency (MHz) 200 CAS# 2.0 RAS# to CAS# delay 3 RAS# Precharge 2 TRAS# 6 |
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