What is a safe operating range for 5xxx GPUs?
Unless your card goes above 100c on a regular basis even with the fan cranked up to or near 100% I wouldn't worry too much if it sat around ~90c under load. These things are designed to run way hotter than they normally get at any rate.
the highest my radeon HD 5770 got today durring a few hours of gameplay in crowded and non crowded areas was 65c, it only got to that like once, the rest of the time it was a pretty constant 60c, is that normal or should i be worried?
My 5770 idles closer to 70-85c depending on what I'm doing if I don't use anything to adjust the fan (and just let the card do it automatically), but your average temp is going to be based on your case, cooling, and even the temperature of the room you're in.
my card runs around 120c when playing, it usually restarts if it goes above 125c. Which has happend about 6 times now. I ordered a secondary fan to cool off my card, hopefully it will ship tomarrow. Oh and its a 4870.
Your card gets around 120c?! Holy ****! That sounds really
excessive, even for the 4870s which I hear run on the hot side. If it's getting so hot it makes your system shut down I would stop playing the game until you get the temperature under control before you do some permanent damage to something.