HeavyLoad is a comprehensive benchmarking tool that puts all critical resources of a computer to the test, including CPU, GPU, RAM, hard disk, operating systems and more.

One of the most practical applications of HeavyLoad is for testing important file or database servers before you start using them productively in a work setting. But it's also helpful if you're just curious about how well your new PC will hold up under intensive use.
The way HeavyLoad stresses your PC is by writing a large test-file to the temp folder, while at the same time allocating both physical and virtual memory. It also conducts complex calculations and even draws patterns in its window. When using HeavyLoad, you can expect a thorough test of your system's abilities.
Version 3.6:
* New warnings fpr the us on Virtual Machines
* New support for more than 32 processor cores
* New command line option for background use /NoGui
* Now available via Chocolatey
* Floating point overflow in graphic drivers was fixed
* http://www.jam-software.com/heavyload/changes.shtml