We always try to lower our CPU usage as much as possible for a normal use. Still, there are situations like testing purposes when we may want our CPU to be 100% busy to test its behavior. This is usually tightly related to overclocking and probing the CPU cooling system capability along with it. Of course you can always use benchmarking applications to give your system some harsh time but it’s not necessary when you know how to increase CPU load all the way up to 100% easily in a few seconds. Note that this has only been tested on single-core computers, it prolly won’t work with multi-core CPUs.

