I have a Q6600 on a P5Q-E running at 3ghz. According to Probe, Speedfan and Coretemp, while running Prime95, the coretemps go as high as 69 degrees. Realtemp though, is showing temps 5 degrees lower. Lower is better for sure but is realtemp showing temps too low? By the way, the cooler is a Zalman 9500 which I have reseated a couple of times with AS5 and Zalman STG1 without making much if any difference.