Polygon count for Unity 4, PC videogame (2014)

Hi guys, I need to know how many polygons do I have to use for characters and environment in a PC game. It is a 3rd person shooter we are developing and I`m retopologizing some characters.
I found some old stuff talking about this (2011):

And I would like to know how many polygons could I use today?

BTW, 2048x2048 textures should be fine, maybe using LODs?

Very grateful my friends, cheers!

Depends on your hardware target. Anything between 3 - 20k is acceptable but is constrained by the hardware of the user.

You can make anything as high quality and nice looking as you can, but as LaneFox says, the end user will be limited by their hardware and you should look at what kind of end hardware you want to target your game for.