which should I choose?

[JohnHarrison]

I'm getting a new rig and will mainly play games.So I'm wondering which gpu of these two should I pick:

MSI AMD/ATI Radeon R7750-PMD1GD5/OC

or rather

MSI AMD/ATI Radeon R6850-PM2D1GD5/OC

 

[rolli59]

The HD6850 is the more powerful but I would look at HD7790, R7 260X or HD7850 instead.