Buying graphic card, need help to choose

[dartxxq]

My configuration is
AMD fx 8320
2x4 gb 1600MHz ddr3 ram
asus M5A97 R2.0
chieftec 600w
benq 21.5 full hd monitor 1920x1080

Problem is next:
My old radeon 6790 graphic is dead and i must to buy new
In my region i must to choose from
Sapphire 7850 1GB/DDR5,/DVI/HDMI/256bit/11200-16-20G
MSI GTX650-Ti Boost 2GB, DDR5/HDMI/DVI/192bit/N650Ti-2GD5/OC BE
MSI 7850 OC 1GB/DDR5,/DVI/HDMI/DP/256bit/R7850-1GD5/OC

My question is next, radeon graphic card are 256bit, and gtx650ti is 192bit,
but gti is 2gb and radeon cards are 1gb, what is my best choise, i want to play new and incoming games and my budget is limited to this card, can not go any higher with price

I thank in advance for answers

 

[Kurifox]

100% on the GTX, ive always preferd nvidia, and between those, the 2gb is a very good improvment, i have the exact same board, fx8350 and the GTX and i preety much max out everything on a 1680x1050.
Its the best i can recommend 😀

 

[Crystalyzer]

The 256-bit makes a difference if you run dual or triple monitor setup; see it as lanes on a highway. The more lanes you've got, the more data can pass through, but still at limited speed. Go with more memory; better and larger textures.