The Project Logan test results seem to be pretty encouraging, as NVIDIA took a prototype to demo at the Siggraph conference that is going on, doing one of the most trying tasks - rendering a human face in real-time. Previously this demo called "Ira," was done using a powerful desktop machine, but now it is fully functional on a Project Logan mobile silicon...
Source: http://www.phonearena.com/news/NVIDIA-bringing-its-desktop-graphics-to-next-years-mobile-Tegra-watch-it-render-a-face-in-real-time_id45672
Source: http://www.phonearena.com/news/NVIDIA-bringing-its-desktop-graphics-to-next-years-mobile-Tegra-watch-it-render-a-face-in-real-time_id45672