thead2001 Posted March 3, 2005 Share Posted March 3, 2005 Hello, I have a Corsair CMX512-3200C2 memory module that is failing Memtest-86 v3.2. I had been experiencing some strange freeze-ups and video glitches. Searching some of the WXP logs suggested a memory problem. All my other system components appear to be functioning properly. The power supply seems to stay within acceptible voltages according to the Asus motherboard monitoring tool I am using and I do not seem to have any thermal issues with the CPU or motherboard. I have two of these chips, but only one shows errors in memtest-86. Motherboard: Asus P4P800 (BIOS 1010, default BIOS settings for Memory/CPU) CPU: Intel P4 3GHz processor (NOT Overclocked) I have what I believe are the important BIOS settings (which should be default settings) below: AI Overclock Tuner [standard] Performance Mode [Auto] HT [Enabled] Configure DRAM TIming by SID [Enabled] Memory Acceleration Mode [Auto] DRAM Idle Timer [Auto] DRAM Refresh Rate [Auto] I tested each memory module separately using memtest-86. One memory module came up with 1853 errors, 1770 in test 5, 16 in test 6 and 67 in test 7. While I did not look at every error line as it flashed by, every one of them I looked at included Err-Bits: 00080000. The other memory module was error free. I used the same motherboard memory socket, DIMM_B1, when testing each memory module in an amatuers attempt to rule out the motherboard as a potential source of the failures. I am currently running my system with the one good memory module and have not experienced any of the video glitches or program hangs I had been previously seeing. Please let me know how to proceed (RMA, etc.). I would like to get a replacement chip ASAP. Thank you, Tom Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted March 4, 2005 Corsair Employees Share Posted March 4, 2005 Tom please try these settings and test the suspect module again with http://www.memtest.org. Please set the following settings manually: AI Overclock Tuner [Manual] Dram Frequency 200Mhz/DDR400 Performance Mode [Auto] Dim Voltage: 2.75 Volts Legacy USB: Disabled Configure DRAM TIming by SID [Disabled] Memory Acceleration Mode [Auto] DRAM Idle Timer [Auto] DRAM Refresh Rate [Auto] Resulting Frequency: 166MHz SDRAM CAS Latency: 2.5T SDRAM RAS to CAS Delay (tRCD): 3T SDRAM Row Precharge (tRP): 3T SDRAM Active to Precharge Delay (tRAS): 6T Then please test the module or modules one at a time with http://www.memtest.org. If you still get errors with that module I would suggest we replace them both. Please follow the link in my signature “I think I have a bad part!” and we will be happy to replace them or it! Link to comment Share on other sites More sharing options...
thead2001 Posted March 7, 2005 Author Share Posted March 7, 2005 Thank you for the quick reply. I adjusted my BIOS settings as you proposed, got the memtest86+ test and reran it against each memory module. The suspected bad one now had 5111 errors spread across tests 5,6 and 7 and the good one did have 3 errors, 2 in test 5 and 1 in test 7. I'll request both to be replaced, but as my machine is inportant to my employment I hope we can arrange that I send modules in one at a time or get sent replacements first. Again thanks for your advice, Tom Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted March 7, 2005 Corsair Employees Share Posted March 7, 2005 Tom, It would be unlikely you got or have 2 bad modules, can you test them in another system? Link to comment Share on other sites More sharing options...
thead2001 Posted March 8, 2005 Author Share Posted March 8, 2005 I only have the one machine. I'm not terribly concerned about the module that got three errors in the updated test as my system has been stable running with this module. Its the other one with the 5000+ errors that clobbers the stability of my machine. What options do we have from where we are currently with this request? I can rerun the tests again for reproducibility, maybe that would cover if I seated the module incorrectly or didn't set up all the BIOS setting appropriately. If you are concerned about the health of the motherboard/cpu/power supply, perhaps you could recommend some good/comprehensive diagnostic tools. I used some simple tools included from Asus, but they seemed more monitoring of voltages and thermal levels than a real diagnostic program. Could I just send in the suspect module based on the test results to date and if Corsair testing shows it is fine, return it to me with a failing grade in hardware diagnosis? Let me know what is most appropriate to proceed with. Thanks for your time, Tom Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted March 8, 2005 Corsair Employees Share Posted March 8, 2005 The best I can offer would be to replace the set. Please follow the link in my signature “I think I have a bad part!” and we will be happy to replace them or it! Link to comment Share on other sites More sharing options...
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