martok604 Posted January 20, 2005 Share Posted January 20, 2005 Hello, I believe I may have a module of bad ram here and am writing to request technical assistance. My server, a SuperMicro p4dc6 mainboard, dual Xeon 2.4ghz cpus has 2gb of ram composed of four 512mb modules of Corsair ECC rdram. The board uses memory interleaving so the ram must be populated in identical pairs of two rims. I was experiencing frequent system crashes and further testing revealed a definite problem. When I wrote approx 1gb of data to disk and read it back, the data would be different by several bytes. Suspecting a ram problem at this point, I booted into memtest86+ which found a screenfull of errors within the first 10 seconds of operation. Since interleaving is being used, it was difficult to isolate the rim via the address of the error but by rotating the rims in and out with continuity modules in banks 3 and 4, I managed to isolate one particular rim which was causing the errors. I checked the bios settings of the board but it has very little a user can change as far as memory settings. The only configurable feature is enable memory ECC which I tried in both on and off. However since this is ECC memory, I imagine this should be set to on. If you have any suggestions on how I might resolve this issue, I would appreciate hearing from you. Best regards, Shane Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 20, 2005 Corsair Employees Share Posted January 20, 2005 Please see if this system will let you boot and run http://www.memtest.org with one module installed and lets test them one up and see if we can isolate the failing module. However, if you get errors with all of the modules I would suspect some other problem. If the system has to have 2 modules please test them 2 at a time. Link to comment Share on other sites More sharing options...
martok604 Posted January 20, 2005 Author Share Posted January 20, 2005 Hello, Thanks for the reply. I am using the tester you suggest from http://www.memtest.org. I cannot test a single module as the board requires at least two identical modules to boot. I therefore installed two dummy continuity modules in banks 3 and 4 and tested in pairs of two. Only one module is causing memtest86+ to report errors. That is, all combinations without the faulty module work fine. Best regards, Shane Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 20, 2005 Corsair Employees Share Posted January 20, 2005 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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