http://barefeats.com/gpu680v6.html Nvidia took a knife to parts of GPGPU paths in new Kepler cards to keep Quadro and Tesla cards at top. But the GTX570 and GTX580 never got that treatment. Note that Dual Classified 580s wins every test except one where our GTX770 takes the lead. Interesting results, one does wonder what will happen to all of these CUDA based apps in 6 months. In the "truly embarrassing" category, a SINGLE Classified 580 beat 2 (TWO) new Quadro K5000s in the OpenCl test. $3600 of video card brought to it's knees by a single 580C. Ouch !!!