Unigine Corp is an international company specialized in real-time 3D products based on their own 3D engine Unigine. They designed the strategy game Oil Rush and they also provide GPU benchmarking tools for Linux, Windows and Mac OS X which are free for personal use. The most popular one is Heaven and this year they have released a new tool called Valley.
Heaven (currently version 4.0) is an extreme GPU testing tool for DirectX 9, DirectX 11 and OpenGL 4.0 that includes cinematic and interactive camera modes, real-time global illumination and support for multi-monitor environments. It’s a really powerful tool that can bring the GPU to its limits by use of the hardware tessellation. It includes GPU monitoring feature for memory clock and temperature which is a nice addition particularly useful for the overclockers.
The basic edition for Linux comes as a self extracting installer shell script that needs to be executed with root privileges. It creates a new folder Unigine_Heaven-4.0 in the current path which stores all data including the launcher heaven.
Recently released, Valley 1.0 features an enormous (64 square kilometers) 3D open-space world with beautiful expanses. Including an interactive fly-by and the hike-through modes, Valley can be a relaxing experience for those who love nature. The installation process is similar to Heaven, a folder Unigine_Valley-1.0 is created and the launcher name is valley.
Both tools have a simple and intuitive interface that displays the available options. Benchmarks can be performed with different settings (e.g. custom resolution, anti-aliasing) and they generate reports that contain a general score and detailed results for the FPS counter. The score is highly influenced by the GPU specs, but also by the video drivers. Out of curiosity I ran the Heaven benchmark on a dual boot machine (Windows 7 x86_64 and Fedora 18 x86_64) and found the results were quite similar.
More info on Unigine Benchmarks.