ozone3d.net
Ozone3D.Net offers free 3D graphics software and tutorials, including a set of GPU benchmarks and utilities. The listed tools include GPU Caps Viewer, a freeware utility describing graphics card capabilities, memory and OpenGL support, and GPU Shark, a GPU monitoring utility for NVIDIA and AMD/ATI cards. FurMark is a Freeware OpenGL 2 benchmark stressing vertex and pixel processors through fur rendering.