JimRim Posted January 4, 2008 Share Posted January 4, 2008 I bought a new pc with an MSI P6N SLI-F and 2GB of Corsair XMS2 memory (Twin2x2048-6400) in DIMM slots 1 & 3. I then purchased 2GB more of Corsair XMS2 memory (Twin2x2048-6400C4) When I installed the second pair it only showed 3GB of memory. I went into BIOS and changed memory voltage to 2V. That didn't help. I then switched one of the 6400's (slot 3) with the 6400C4 (in slot 2) and the computer wouldn't even boot up. Switched them back and the pc still shows 3GB. I think I may have a bad 6400C4? JR Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 4, 2008 Corsair Employees Share Posted January 4, 2008 That may be normal if you have a 32 Bit O.S. and you cannot mix memory with most MB's now. I would check what it shows in the BIOS or what's shown in http://www.memtest.org. Link to comment Share on other sites More sharing options...
JimRim Posted January 19, 2008 Author Share Posted January 19, 2008 Ram Guy, I finally ran the memtest86 v3.4. It shows 4GB of memory and everything passes. However during testing if shows testing from 0 to 3,07KB then skips 3,072KB to 4,096KB, and test 4,096KB to 5,120KB. Does this all make any sense? JR Link to comment Share on other sites More sharing options...
JimRim Posted January 19, 2008 Author Share Posted January 19, 2008 Ram Guy, Ooopsss. I meant MB not KB JR Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 22, 2008 Corsair Employees Share Posted January 22, 2008 Please use http://www.memtest.org Ver. 1.70 and see if that happens again. Link to comment Share on other sites More sharing options...
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