I have the exact kit. the G-skill pc2-8000 1000 Mhz 2x2GB kit. and mine were terrible. they could not in ANY way hit the 1000 MHz 5-5-5-15 spec's.. at the rated 2.1v or even at 2.25v they still couldn't

I was not happy with this ram. it wasn't stable at rated speeds. the highest I could get this RAM to be STABLE on my 750i was 933 Mhz and not even at 5-5-5-15. you think being at 933 it could stay tight, but mine could not. I was at 5-6-6-19 at 933.. anything higher, or tighter I'd get bluescreens and have issues. yet they passed hours and hours and hours of memtest86.

I actually about 10 minutes ago just installed my New Corsair Dominators 2x2GB kit of PC2-8500C5D's.. these are badass RAM chips. they are on same board the G-skill failed on. running at 1066, and 5-5-5-15-22 with NO problems so far. I'm about to run memtest now... before the G-skills would crash if I was on this long even at 1000.

Maybe I just got a weird set. I don't know. but they never had an error. and they were ROCK solid at 933 and lower. but anything else was pushing it. Now they'll just have to be my back-ups.