Evaluation of the cooling effect - the CPU temperature
First job of a cooler is to keep the temperature of the CPU die as low as possible. In order to determine this temperature we chose the AMD760 reference board as our testing platform. With the temperature sensor shown in the picture we determined the temperature near the CPU core.
Every candidate was tested on an Athlon 1.00GHz under ambient temperature conditions of 23 degrees Celsius. The CPU temperature was checked after 10 minutes of a defined test run. We originally planned to take the temperature with a laser-measuring device without any contact to the CPU. But a couple of tests proved that the determination of the temperature with the sensor of the AMD board was much more precise than the laser method. The average error of the measuring was less than 1 degree.