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.
* Fixed BIOS Reading on HD 4870. Please do not flash non-128K BIOSes to GDDR5 cards
* Fixed GDDR5 bandwidth calculation
* Fixed texture fillrate on RV770 and RV730
* Added three extra on-die temperature sensors to RV770 monitoring
* Removed states.dmp file creation
* Fixed GPU activity readings on RV770
* Changed devices list order to be more intuitive (by bus number now)
* Added Shared Memory support, see the forum for more info
* Fixed more 190°C PCB readings on NVIDIA
* Catalyst Beta versions no longer displayed as version 2.2
* Fixed sensor graph overflow
* Sensor graphs will try to autoscale now
* Fixed RV505 process size
* Fixed memory bus width reading on some ATI RS300
* Fixed rare crash when reading NVIDIA sensors
* Fixed GDDR3 detection for G71