3.6 GHz 560, runs extremely close to its thermal limits, possibly causing the processor to throttle under a high load.
It took us several weeks to look into this phenomenon. Everything began with Pentium 4 560 benchmark results that kept becoming slower and slower with every repetition. We suspected the engineering sample to be fishy and contacted Intel. The German media manager Christian Anderka and a thermo technician, Benson D. Inkley, spent an entire day at our lab in order to solve the mystery.