If you keep NB temp below 55c average should be fine. It's kinda touchy when run at higher temps than that. With a 40x40x20mm fan and AS5 my NB idles at 35c, load at 38c with 1.53V vNB with Asus heat pipe majig on the Rampage Formula. So I quite can't understand how others have such high temps besides the obvious poorly ventilated cases or hot ambient temps (ie. summer)