Quote Originally Posted by sniggle View Post
Hey guys, I have a weird quirk with my workstation here. I have 2x1GB of G-Skill PC6400 5-5-5-15 (non HZ) ram. I cannot get the sticks to pass test 5 of memtest when they're both in the board. The weird thing is that test 5 doesn't even show errors. The walltime and pass percentage just stop incrementing even though the little + sign is still blinking in the top left. However, if I run the sticks individually they both pass test 5 multiple times.

Is this bad ram or what? I've tried raising the voltages and loosening the timings with no fix. I've never seen memtest just lock up like that, even though its UI is still updating.

I've tried bios 1707 and 2004. The ram is currently running at its rated speed of 400mhz. At these settings I am orthos stable for hours (small FFT, so not really stressing the ram).

EDIT: running the ram at 3/4 (300mhz) and it's passing test 5 multiple times. I think this ram is just sorta crappy. I might RMA it.
This is what happens when the motherboard is what's causing the failure, not the memory. You have simply pushed the memory controller too far. 975x is not good at clicking memory very high. I get this exact 'freeze' after aboout 925MHz DDR2 or so, my board is not a good one for memory clocking, some can go 1100Mhz but it's very rare. 1000MHz MAX seems about normal though.