GPU-Z is a lightweight system utility designed to provide vital information about video card and graphics processor.

SmoothVideo Project converts any video to 60 fps (and even higher) and performs this in real time right in your favorite video player.

Cinebench is a real-world cross platform test suite that evaluates your computer's performance capabilities.

UNIGINE Benchmarks can be effectively used to determine the stability of PC hardware (CPU, GPU, power supply, cooling system) under extremely stressful tests.

OCCT is a stability checking tool, free for personal use.