Which version of the 7870 should I buy?

maplecrete

Honorable
Nov 29, 2012
25
0
10,530
I've been planning on upgrading my gpu for a while now and I originally planned to do it either during summer or end of the year but stores around my location are having a limited offer for Farcry3, Bioshock and Tomb Raider with a purchase of any 7800 series.

My question is which version of the 7870 should I buy? I'm not really too certain of the differences and a quick look at online prices I can see that their prices differ meaning there are probably differences between them.