When I first had this set up about 8 months ago I remember getting up to a shade under 2.5 fsb at 227, multiplyer 11 and stock volts 1.40,, I ran it as this for a week or so before putting it all back to standard as TBH I didnt notice any performance increase in any of my games at the time,, anyway thought id give it another go last week as I have a bit of time on my hands and im trying to run oblivion at a playable rate, but now setting the fsb to anything over 214 results in a blank screen after exiting the bios?? only thing I can think of that I have changed is the motherboard bios which i updated to revision f4 from f1, would this have caused this. I dont really want to go back to older version bios, any suggestions..