So I got this GTX 260 216 up and running and the temps are ok. So far 70C on a 511 w/ fan speed @70% (90F outside no AC). The only thing I am curious about now is my 12v voltage. According to HWmonitor my idle 12v is 12.35 which drops to 11.97 absolute lowest so far under load (quad crunching as well).
Im still within 5% so I think I am alright, just want to double check though.
Side note, this 260 @ stock is crushing WUs.