What do you mean by 60-65%? That's not a temperature..haha. Well, it all depends on the airflow you have in your case and your CPU cooler. When I had my stock CPU cooler my 955 BE would idle at 42C at about 3.5GHz. With my current cooler, right now it's at 37C @ 3.7GHz. It is pretty warm in this room though...around the winter time it idles at 25C

If you mean "80%-87% tops" as in 80C-87C, that's a little warm, but you're still far away from the temperature threshold, which for your card is actually a little over 100C. I know that sounds insane but it's true.
My GPU, Radeon 6870, idles at 40C currently due to the room temp...and ingame I've never seen it go above 78C. I do have 3 fans on my case though, and the GPU is overclocked as well with the fan speed set at a constant 40%