pyroCPU 1.2 & Source Code:
pyroCPU 1.2 is an entirely rebuilt version of pyroCPU that offers many more features and options than what 1.0 offers, however it is not yet released.

pyroCPU 1.0:
pyroCPU is a tiny (442 kb in size) easy to use program which puts a load on your processor by running simple processes very quickly. Putting this type of load on your processor is great for testing CPU temperatures and system stability. Depending upon the speed of your processor, you may need to run multiple copies simultaneously in order to achieve 100% load. To start PyroCPU, simply launch pyroCPU.exe and the processes will begin. To end these processes, simply close the window. pyroCPU and its staff take no responsibility for miss-use of this program or any damage that can possibly be caused by the heat produced under a high CPU load.

Download pyroCPU 1.0