I've narrowed down my gpu upgrade to a 5770 for the machine in my sig as the 4850 is suffering from a lot of crashing/corruptions/etc which I think is due to overheating. Which 5770 would you guys recommend from newegg for its capability to stay cool and run quiet? My 4850 is too loud even at 50% and we all know how hot they run. It will be used at stock speeds at 1680 1050 resolution.