Sorry for the delayed reply...been out of town.
I leave Vcool in celsius mode to keep the systray icon real small, so it's hard to peg it in Farhenheit exactly. At idle and a 160FSB (when I'm in speed freak mode), it's around 40 C/100F. At full load during online multi-play or video encoding, it pegs around the 52C/130F mark. Lately it's been so friggin' hot down here, I've choked it down to 154 FSB, so it stays between 36 and 46C, about 95 to 120F. It's about a 8C drop compared to the big-assed HS/F I had on there before--and I don't have to run that big noisy ol' 4" front exhaust fan to keep air moving through the case anymore. Just got a soft hum from the water pump that you hear over the usual whir of the PS Fan and secondary rear exhaust now. My brother used to tease me that I was gearing up for take-off with that Volcano 7 and front fan I had in there before....hehe.
If it ain't broke don't try to fix it! But, hell if you can tweak that bastard just a little bit more....hehehe.