2500 for me  
but that was at 1.95V
there has to be one out there that can do 2.5 ghz with a lot lower voltage though...
argh... if not, then maybe watercooling is the way to go...
dunno ...
now i'm contemplating...
keep this 2100+ and get better ram?  i was thinking a pair of the corsair XMS pc3200 (2-2-6-1T) $214
or water setup... a little less than $200
or do my original plan... cuz i think i can sell this 2100+ on the FS/FT forum for a decent price and sell my samsung pc2700 ram as well for a decent price... 
hehehe.... SOO MANY OPTIONS NOW!!!
