Stone Giant is a benchmark tech demo that showcases and measures DirectX 11 performance using the BitSquid Engine. This is a very heavy tessellation dependant benchmark which runs very well on nVidia hardware. AMD optimised their drivers for tessellation performance recently. We are using the default driver settings.
Around 8 frames per second faster than the reference GTX580, considerable gains. The AMD cards are slower with this particular benchmark, although the HD6990 delivers very strong results.