For anyone that is overclocking or just want to check the stability of their system you can kill two birds with one stone. You can run a Distributive computing application in the background that utilizes 100% CPU while the computer is idle but if you are using the PC it will not slow you down. There are many different one's out there but my favorite is Folding@Home from Stanford. You are actually helping to fold proteins that aid in cancer and other medical research. You can find out more information here http://www.stanford.edu/group/pandegroup/folding/ and if you need any help setting it up just let me know.