*Update: Winnie 3000+ @ stock voltage (1.375) and 2430 MHz (270*9). Ran Prime 95 for 49 minutes, no errors, CPU temp levelled off around 50 degrees. @ idle about 5 minutes after run, dropped to 30 degrees. Room temp around 25 degrees (guesstimate, upstairs is 22, room is a little warmer). Only fans blowing on CPU cooler are GPU fan (VF700CU overhangs my 6600GT a little, so the cooler gets a little air from it) and the rear case fan pulling air from it (comes with case, set at low speed). *Temps are in Celsius. I have a screen pic of idle temps, but don't know how to post pics :S May try to figure it out when I got final temps.
So far so good!
*Edit: Cool n' Quiet enabled, so Load temps @ 2430 MHz, idle temps @ 1350MHz.