Core i7 920 rev D0 stepping 5 :)

[mremulator]

Thanks and darn, you've got plenty of i7 CPU's there, lol. Btw, I've got this weird problem whereby I could run Prime stable on 20x200 and 21x197 but the moment I do 21x200, nothing seems to work even if I add 2-3 notches of Vcore, PLL, VTT.

What do you think could be wrong? I tried 21x201 and no luck as well. What voltage do I normally have to add for higher BCLK (above 200)

Same here, tried everything... can't get past 200Mhz on my R2E & i7 920 D0??

However, 21x200 is rock solid 24/7.