i already have the sapphire 7750, ako temps at room ambient is about 39-40 idle, 51-52 standard load/gaming, stress test maintains at 60-61deg buyag. fan is set at automatic, its always running at at 39%, only increases starts to increas when temp is about 60deg(42% fan speed).
ako sapphire 4770 before idles at 51-52deg, games at 59-62deg, stress test is stuck at 66-67deg(probably temp limit). fan speed is set at about 30deg idle and increases as temp increases.