Cpukiller3 is a software capable of slowing down your computer up to 99% permitting you to run old software. This software slows down computers so you can run old legacy programs and games. It prevents runtime errors, and you can configure cpukiller to launch your old software at a user-defined speed and automatically close.

The license of this software is Free Trial Software, the price is $29.95, you can free download and get a free trial.