GPU-Z

Product: GPU-Z v0.53
Company: TechPowerUp
Website: www.techpowerup.com
Type: Free
Requirements: Windows XP/Vista/7

GPU-Z application was designed to be a lightweight tool that will give you all information about your video card and GPU. Main Features: support NVIDIA and ATI cards; displays adapter, GPU, and display information; displays overclock, default clocks and 3D clocks (if available); validation of results.