SmallLuxGPU is a LuxRays (luxrender.net/wiki/index.php?title=LuxRays) demo and a LuxRender (luxrender.net) "proof of concept".
The video was recorded on a i7 860 + 2xHD5870 + HD5850 at the resolution of 1920x1200.
SmallLuxGPU and LuxRays are released under GPL license and the sources are available at src.luxrender.net/luxrays/. Precompiled binaries are available on LuxRender forums (check the section dedicated to GPU acceleration).
