Memory Issue, what could be the problem?

n00g7

Distinguished
Aug 14, 2006
8
0
18,510
I ordered the corsair 2x1GB 6400 DDR800 C4 memory and one of the heatspreaders was tilted prefented it from fully seating in the mobo. I did an advanced replacement option so Corsair sent me out 2 more 1GB sticks. I got them in the mail on saturday, figured, oh, easy, same memory, same timings, easy swap. I shutdown the comp, pop the 2 sticks in and fire it up. Everything looks fine until I open firefox... BSOD, restart, BSOD at windows splash, restart again, BSOD launching firefox again. Several times it stayed up for awhile and I hit the memory benchmark on everest, exact same scores with previous memory, then crash. I then tried each of the sticks solo, crash, crash, and more crashing. Pulled the video card out, put memory in, cleared CMOS put memory in, etc, and crashed. Stuck a stick from the other pair back in, worked fine. The mobo auto SPD's them to 5-5-5-18 and they still didn't work at DDR800. I was running the old sticks at DDR 896 4-4-4-12 with no problems. Any ideas?
975XBX .304
DDR800 6400-C4 corsair memory
600W Sli Dual rail PSU
7900GT
2x74gb raptors
2x250gb Maxtors
4x250gb WD Caviar RE2