GPU-Z is described as 'A lightweight utility providing detailed information on video cards and graphics processors. Displays clocks, tests PCI-Express, and supports GPUs' and is a very popular system information utility in the os & utilities category. There are more than 25 alternatives to GPU-Z for a variety of platforms, including Windows, Linux, Android, Mac and iPhone apps. The best GPU-Z alternative is HWiNFO (32/64). It's not free, so if you're looking for a free alternative, you could try HWiNFO (32/64) or Speccy. Other great apps like GPU-Z are AIDA64, CPU-X (by X0rg), hwinfo and SIW.