A new one is coming for Blender internal render engine! Cycles! (real time gpu )
http://www.youtube.com/watch?v=tSIx_o0IOXk

http://graphicall.org/ you must load a build in these pages following your config ! (Scroll pages)
(all are a version of Blender + versions of test of some different plugs ;)
Before integration in a stable end version !