Your RV02 Evo has the Air Penetrator fans, correct?
Apparently they make quite the difference in cooling performance, at the cost of a little bit more noise.
from another topic i psted in
i'll post some load temps later.
just tabbed out of battlefield BC2.
this was with two 6870's OC to 1000/1125 1.26v, 34% fan speed.
my 6950 idled at 33 with 37%fan speed on one monitor, now it idles from 39 to 40 because the memory runs full speed in eyefinity.