GPU-Z is a lightweight utility designed to 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
* No installation required
* Support for Windows 2000 / XP / Vista (both 32 and 64 bit versions are supported)