Look at this tutorial/thing, it has a fairly dense sub div mesh with displacement, probably 30k? http://www.cgarena.com/freestuff/tutorials/xsi/monster/index.html
I made this character from a concept by Samuel Aaron Whitehead. Concept here - www.artstation.com/artwork/6awr It was made using Maya, ZBrush, Substance Painter, and Photoshop. 30K Polygons Rendered in Arnold model