dennishm Posted February 27, 2005 Share Posted February 27, 2005 I've had two sticks of CMX256A working flawlessly for about a year now. Then suddenly started getting unexpected reboots. Tested with Memtest86 and found a failure after about a hour. Repeated test 3x; same failure, same memory address. I swapped the memory sticks in the sockets, and the error moved (but was also repeatable). I tried changing CAS from 2 to 2.5 to 3 and no luck- still get a Memtest86 failure. I determined which stick fails by removing and testing one stick at a time. I replaced the RAM module with a stick borrowed from a friend, and all 512 test OK. CMX256A-2700C2 XMS2700 256MB 333MHz CL2 Lot #0404089 I think I need an RMA.... Thanks, Dennis Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 28, 2005 Corsair Employees Share Posted February 28, 2005 Can you tell me the make and model of MB you have along with the CPU speed and it’s FSB as well? In addition, please tell me the bios settings you have set for both CPU and memory and any performance settings that you may have set? Link to comment Share on other sites More sharing options...
dennishm Posted February 28, 2005 Author Share Posted February 28, 2005 The MB is a K7S5A; AMD XP2100 The FSB is set to 138/138 The BIOS supports CAS of 2, 2.5, 3.0. I normally run at 2.5; I have tried the other settings and same result (RAM failure). The BIOS supports RAS latency of 4,5,6,7; normally run at 6. I also tried the other settings with a failed result. Dennis Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 28, 2005 Corsair Employees Share Posted February 28, 2005 Please set the CPU Freq to it's default (133Mhz) and then set the timings to Cass 2.5-3-3-7 and test the modules with http://www.memtest.org one at a time. If you get errors with both modules I would suspect some other problem and testing them in another system would be suggested. Link to comment Share on other sites More sharing options...
dennishm Posted February 28, 2005 Author Share Posted February 28, 2005 I will change the settings tonight and try..... but the module had been working for a while. Dennis Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 28, 2005 Corsair Employees Share Posted February 28, 2005 Please test them one up as that should tell you if its failing module or maybe some other problem. Link to comment Share on other sites More sharing options...
dennishm Posted March 1, 2005 Author Share Posted March 1, 2005 Set the module back to 133/133; I tested each module at 2.5 CAS, 7 RAS (not sure what the "3-3" refers to). Ran memtest86 (latest version) for about two hours on each; the one module passes OK, the other module gets a failure after about 1.5 or 2 hours. Unfortunately, I do not have another machine to run the tests on..... Dennis Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted March 1, 2005 Corsair Employees Share Posted March 1, 2005 Let's try replacing your modules! 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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