Quote Originally Posted by ghost_recon88 View Post
Hey guys, I can get my Q9550 to run 4.1GHz with 1.248v all day long, but recently I tried for 4.25GHz (8.5x500) and I can't seem to get it stable at all. I'm using BIOS F4 on a revision 1.0 board. First is my stable template, then the 2nd is the settings I'm currently trying (unsuccessfully) to reach 4.25GHz.
It is impossible to reach 4.25ghz stable with 1.33v Vcore when you use 1.28v for 4.1ghz. Try to up your vcore more.