Much of the time, unless you calibrate your temp software, the temperatures it reports are off by a certain amount of degrees anyways. The temperature that you are getting is under full synthetic load which is by no means a normal usage. It is balls to the wall usage which means the maximum amount of heat is going to be generated. I am surprised that the stock cooler is able to cool it down. Prime95 normally destroys the stock cooler. The temperature that you are getting is definitely fine though as it is under load. Under normal conditions you have absolutely nothing to worry about. Check the frequency that your CPU is running at... if it has not throttled itself down then you have not reached the maximum allowed temperature. Obviously...