techPowerUp - (Freeware)
GPU-Z is a software that provides the user important information about the graphics card.
 GPU-Z is a small but powerful application that offers essential information for all of the graphics card version GPU, BIOS, frequency, etc.
 
 The simple and easy to use interface displays a window with information such as the ID, shaders, the type of memory bandwidth, the version of the driver or the frequency of the GPU. 
 
 GPU-Z application works with nVidia or ATI card types.
 
 - Added full support for Radeon HD 6950 and HD 6970
- Fixed TMU/Texture Fillrate rounding error on NVIDIA cards
- Improved voltage monitoring support for GTX 570
- Workaround for ATI OpenCL driver crashing GPU-Z on systems with NVIDIA cards
- Fixed crash when driver version could not be read
- Fixed crash when splash screen interrupted by message box