My 2500 runs at 52 - 56 (o/cd core voltage + 5%) and I have had no problems. That's with stock cooling.
My system temp gets over 50 but thats because I have a hell of a lot of cables and stuff in my case, and because of the design my system fan only blows over one side of my main board properly.
I think it's on the hot side but if it aint broke I aint fixing it.
If your worried about heat, in addition to a system fan you could get an exhaust booster, which takes up a pci socket and blows the hot air out of the back of your case. They're cheap too - mine was about £20. Not sure how effective it is, but it certainly does blow out hot air.
Your temps at stock are about the same as mine were, which suprises me with your superior h/s & fan (used to have a volcano but the 747esc noise was just too much for me).
By all accounts your temps are well within saftey limits.
| posts: 251 | Location: In a house
with the previous cooler temp was idle 32 and load 38....now i have volcano 11 and if the fan is at the max rpm i have idle 29 and load about 33 .....but its too loud now i am keeping it at about 3000 rpm and temps are 34 idle 39 load and also silent.....