What are you guys setting your RAM at with the ASROCK extreme? My OCZ RAM is very finicky and I just can't get the timings right for a stable overclock beyond 3.3, even though I can post with the chip set at 4.0 (and indeed, generally use the system until I run blend in Prime 95). Here's an example:
Multi: 21
Blck: 160
Vcore: 1.25 (can get this OC with less easily, but when I push for higher blocks I usually bump this to 1.25)
RAM: 8-8-8-24 1.65v set
DDR3 800 (not sure on this, have to check at home)
Usual settings for everything else, HT disabled, Vdrop disabled, speedstep disabled.
Sometimes it crashes on me or just won't boot even at 3.3. Any suggestions? Should I just chuck this crap RAM? I've had borrowed Gskills in there and it passed blend for 24 hours at 180 blck....