highest i passed vantage was 1.75v 5.5ghz :/
but i dont have rogconnect to up the clocks for 3d then lower it for cpu test
i can boot in w7 @6ghz but xp has to be 5.75ghz or it bsod even if its not cold enough it would in xp
but need to do new installls and mod the hd 4850