Aye, I've got 4x1 gig sticks of GEiL DDR2-800 RAM, and it won't run at 800 mhz at all I've got a 400mhz FSB with my E8400 and I really want to run the RAM at its rated speed at 1:1 ratio

I was told earlier on in the thread that 975X has problems with 4 RAM slots being filled.

Using SPD timing doesn't help, nor does increasing the volts