Hehe,
What you're seeing below are my results seen in my FF 50.1.0 under my native Win XP Pro Sp3 on my pair of SLI-bridged nVidia GTX 550Ti graphics cards that host a total of nearly 400 CUDA processors working in parallel under the most recent v368.81 OpenGL/OpenCL(CUDA)/PhysiX driver for that GPU brand directly from nVidia.
"There ain't no such thing as a free lunch"©, guys!