What PC is better for Planetside 2?

[RomanN]

First Build: http://pcpartpicker.com/p/zK1y

Second Build: http://pcpartpicker.com/p/zK0U

I have two options, which one is better? Two friends helped me with these builds. Both have different opinions about different brands: ASUS vs. MSI, or what kind of GPU: GTX 670 vs. HD 7970. I want to be able to play PS2 with 30-40 FPS minimum at all times. I'd also like to play BF3/BF4 when it comes out. I plan to OC a month after I get the parts. I'll get upgrades later on when I have more money. I already have decent, but crappy peripherals: monitor, keyboard, mouse, and mic. Any opinions/suggestions are greatly appreciated. Thanks in advance.