My friend has an E8400 cooled by a Zalman 9700 with Artic Silver 5 compound on an Asus P5K Premium board in a CM RC-690 case. The temperatures under load read CPU 42 and the Core 0/1 ~58 (in speed fan) and CPU 42 and the Core 0/1 ~52 (in Everest ultimate). It was my understanding that the cores are always at a lower temperature than what the CPU reads. In addition the difference in the temperature between programs is confusing.