GPU-Z is a lightweight utility designed to give you all information about your video card and GPU.
1. Support NVIDIA and ATI cards
2. Displays adapter, GPU and display information
3. Displays overclock, default clocks and 3D clocks (if available)
4. Validation of results
5. No installation required
6. Support for Windows 2000 / XP / Vista (both 32 and 64 bit versions are supported)
The license of this software is Freeware, you can free download and free use this diagnostic software.