which graphic card is better 1 gb or 2 gb

I'm not sure what the difference is between a 7770 and a 7750 performance wise. What I would say is that getting more VRAM is good.

Battlefield 4 with everything set to MAX, on 1920 x 1080, uses roughly 1.6GB's of VRAM based on personal experience using MSI Afterburner. This was on an Nvidia card though.

Can't you get the 7770 with 2GB's or VRAM?
 


yeah the 7770 is a straight up faster card, it's actual gpu is faster, the 2gb helps if you want to turn up some of the details or play on multiple monitors. could you swing a 7790? that card is a beast for the price!
 


Yeah. I actually read up on the 7750 now. The GTX 650 ti is faster.

I wouldn't go with the 7750