GPU-Z v0.5.2 adds full support for NVIDIA GT 440, GTX 550, GTX 560, GTX 570, GTX 590 video cards and numerous other adjustments to make the free utility even better!
Grab it if you want to use the latest and greatest - http://www.techpowerup.com/downloads/1969/mirrors.php
GPU-Z is a lightweight utility designed to give you all information about your video card and GPU.
Changes in GPU-Z 0.5.2
Added support for NVIDIA GT 440, GTX 550, GTX 560, GTX 570, GTX 590
Added support for AMD HD 6990
Added detection support for more Sandy Bridge IGPs
Fixed ROP count on ATI Madison
Improved OpenCL detection for ATI
Added CHL8228 voltage controller support for Cayman Pro and XT
Improved driver based voltage monitoring support for ATI cards
Added startup parameter /card followed by the adapter index, starts with 1.
Several crash and stability fixes