Here's a few that I think are some of the most realistic 100% CG images on this website (not all of them are of humans though): Sandra by Misu Abandoned by Zandar Interior 2 by jlv Yuletide Evil by Zandar There are others, and many more on other websites, but I don't have time to go digging right now. ;-)

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Tools :  3dsmax 2015, Daz Studio 4.6, PoserPro 2012, Blender v2.74

System: Pentium QuadCore i7, under Win 8, GeForce GTX 780 / 2GB GPU.