waahooo Posted October 17, 2006 Share Posted October 17, 2006 This memory stick seems to mess up whenever I try dual channeling with it. I recently bought a new computer using four of the same memory sticks, but my computer kept crashing from the windows stop error. I ran the Prime95 torture test with each stick separately, but it seemed pretty stable, so I ran the tests again using two sticks at a time and eventually singled out the stick that caused the problems. It seems like it works fine when it's by itself but when it's dual channeling, it malfunctions. Now I've been using the remaining three sticks and it hasn't crashed yet. Link to comment Share on other sites More sharing options...
waahooo Posted October 18, 2006 Author Share Posted October 18, 2006 Sorry, I just checked and I bought two Twin2X 1024A-6400, not four CM2X512A-6400. Don't know if that changes things. They seem like the same memory sticks though. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 18, 2006 Corsair Employees Share Posted October 18, 2006 Please try if you have not done so and set the memory Voltage to 2.1 Volts and see if that will sove the problem. If not then I have no problem replacing them, Please use the RMA request found in TSXpress or 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...
waahooo Posted October 18, 2006 Author Share Posted October 18, 2006 Can you explain how to change the voltage to 2.1? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 18, 2006 Corsair Employees Share Posted October 18, 2006 Please check your user manual that came with your MB in seciton 4, and the memory voltage will be listed in Jumper Free section. Link to comment Share on other sites More sharing options...
waahooo Posted October 19, 2006 Author Share Posted October 19, 2006 Tried testing it again but it failed after an hour. However, since I bought the Twin2X's, would I have to return two as a pair, not just the defective one? I forgot which pair came with which package, since I bought two of them. Is it okay for me to return any two? Also, I wrote a small number on each memory stick with a pecil, just so I could keep track of which stick I used when I was testing them. Does that affect the warrenty? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 20, 2006 Corsair Employees Share Posted October 20, 2006 Wait? How many modules do you have total? And NO you cannot mix memory with this MB all of the modules would need to be the exact same part# and revision. (How To Read the Memory Label) And you should be doing the testing one set at a time and each set would need to be matched. Link to comment Share on other sites More sharing options...
waahooo Posted October 20, 2006 Author Share Posted October 20, 2006 I bought 2 orders of Twin2X 1024A-6400, so I have four modules all together. Their part numbers are all the same (CM2X512A-6400). I ran the tests using all four connected to my computer, and that's when it failed in an hour. I'll try testing them in pairs again, but I don't know which two came with which. Would there be a way to find out? Edit: I think I found the answer to my question. There's a number on the warrenty sticker on each module, and they are paired. I'm assuming the memory sticks with the same numbers are the paired ones? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 21, 2006 Corsair Employees Share Posted October 21, 2006 You please see the link I post previously! Link to comment Share on other sites More sharing options...
waahooo Posted October 21, 2006 Author Share Posted October 21, 2006 Sorry, I may not be seeing something, but that link doesn't help me figure out which two modules came together. All four memory sticks have the same part number, version number, and lot number. There are only two differences between these four modules: the serial number, which the are in chronological order (xxxxxxx47, ...48, ...49, ...50), and the number on the warrenty sticker. The modules with the serial number 47 and 48 share the same warrenty number and 49 and 50 share the same warrenty number. These are the pairs, right? Link to comment Share on other sites More sharing options...
waahooo Posted October 22, 2006 Author Share Posted October 22, 2006 Test results: Pair #1 - About 3 hours into the test my computer restarted. Under 2.1 volts - Test failed in under two minutes. Tried it again and test failed in under one minute. Pair #2 - Test failed after 10+ hours and computer froze. Under 2.1 volts - 15+ hours, had no problems, stopped the test myself. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 23, 2006 Corsair Employees Share Posted October 23, 2006 Please make sure that you have the latest bios and then load setup defaults and set the Dim Voltage to 2.1 volts and then set the timings manually to the tested settings for the specific module you have, and then test the module/modules one at a time with http://www.memtest.org! If you still get errors, please follow the link in my signature “I think I have a bad part!” and we will be happy to replace them or it! However, if you get errors with both modules that would suggest some other problem and I would test them in another system or MB to be sure. In addition, with this MB you have to disable legacy USB in the bios when running any memory test. Link to comment Share on other sites More sharing options...
waahooo Posted October 27, 2006 Author Share Posted October 27, 2006 Under memtest, one pair ran for 24 hours without errors and the other pair had 5 errors in less than 2 hours. I guess I'll send that one back for a replacement. Thanks for all your help. Also, what would be the optimal settings for using all four modules? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 28, 2006 Corsair Employees Share Posted October 28, 2006 What test did you get errors in? And what were the settings you used? Link to comment Share on other sites More sharing options...
waahooo Posted October 28, 2006 Author Share Posted October 28, 2006 I updated my BIOS and set memory voltage to 2.1v, timings to 5-5-5-12, and disabled legacy USB. I just found out on the corsair website that the preferred timings for the Twin2X 1024A-6400 is 5-5-5-15. However, the lable on the memory sticks said 5-5-5-12, so I used those numbers. I didn't really notice which test# caused errors because the FAQ on memtest forums said that trying to figure out memtest results are useless. But if I remember correctly, I think I saw test# 7 caused errors. Should I run the tests again at 5-5-5-15? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 30, 2006 Corsair Employees Share Posted October 30, 2006 Try them at 5-5-5-15 and errors in test 5,6,7 or 8 would suggest some other problem, and can you tell me the exact settings you used? Link to comment Share on other sites More sharing options...
waahooo Posted November 6, 2006 Author Share Posted November 6, 2006 I tested each pair again for 12 hours and got no errors. Then tested using all four together for another 12 hours and got no errors. I set voltage to 2.1, frequency to 800Mhz, timings to 5-5-5-15, and disabled legacy usb. I think the problem is fixed. Thank you for your help again. Link to comment Share on other sites More sharing options...
waahooo Posted November 6, 2006 Author Share Posted November 6, 2006 Wait, no, the problem is not fixed. My computer restarted again, the same way it did when the problems began. I was using all four memory sticks when this happened. For about a week my computer has been running fine using one pair of modules, leaving the other pair out because I thought they were the bad ones. But after the recent tests, I thought the problem was fixed. I guess the other pair are still bad. I kept the settings the same as when I was running Memtest, except that I enabled legacy usb. Could that have been the problem? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 6, 2006 Corsair Employees Share Posted November 6, 2006 With 4 modules I would set the memory frequency at 667 Mhz and see if that will solve the problem! Link to comment Share on other sites More sharing options...
waahooo Posted November 7, 2006 Author Share Posted November 7, 2006 Thank you, I think it worked! Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 8, 2006 Corsair Employees Share Posted November 8, 2006 Great please let me know if you have any more problems. Link to comment Share on other sites More sharing options...
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