Freeware: Overclock

Voodoo3 Tweaker v2.0lets you overclock your Voodoo3 graphics card and tweak a few settings. Voodoo3 Tweaker supports the Voodoo3 2000 and the Voodoo3 3000, allowing you to overclock your board, and tweak a few settings for Glide/OpenGL/Direct3D.

ATIccelerator II 1.0.4 overclock ATI graphics cards. ATIccelerator II can change ATI graphics cards frequencies live, on-the-fly, under Mac OS X.

iCook 1.0 overclock your iBook via software patch. iCook is a small OS X kernel extension that allows simple overclocking of the IBM 750FX processor found in some Apple iBooks.

Hot CPU Tester Pro 4.4Hot CPU Tester Pro is a system health and stability tester. It tests CPU, and virtually all parts of motherboard for errors, bugs and defective components. It is a burn-in test with uniquely designed state of the art DefectTrack engine.