psht, that's not hot for a GPU dude...they get way hotter than CPUs ever would.
It would be fine if it was idling up at 60C
BTW, GPU's cool down 10C within half a second of you stopping game play, so by the time you get to your monitor it's not even close to what the temp was....Rivatuner shows a line graph of your temperatures over a course of time so you can see what it hit.
80-85C full load is common for graphic cards with stock cooling.
My 6600GT would idle at like 65C, and I think my 6800GT did the same if not 70C, both ended up at 85C full load...even with water cooling my GPU idles at around 48C...granted it's overclocked, but even when it wasn't it wasn't much cooler.
Hygors was hitting around 100C on his gigabyte card =/
the thermal threshold for those cards is like 145C, of course I'd never let it get anywhere near that though