I have strange temps too, I have disabled all speedsteps, but idle temps ar the same all time @ 2.83 Ghz or @ 3.8 Ghz, 38/35/35/40, load temps with Intel Burn test is max 53/53/53/53, strange CPU. I have good watercooling oc CPU.

My stock voltage is 1.275v, with it looks like I can burn till 3,7+ and more Ghz, but when I get ~ 450 FSB it freezes whatever I do, even with 7x multi, strange, trying all setings. Maybe need another Q9550, I could burn 470+ with old Q6600 easy