i'd like to get help from you guys..my i7 860 right now is on its sweet spot @ 3.8Ghz with 1.28v vcore 1.264v on VTT 1.87v on PLL can u suggest any setting for 4ghz??i tried a lot of combinations well all fail in middle of tests..

board is Asrock P55 Pro..with bios 2.2..

any help will be appreciated..Thanks!!