So my PC specs are an Intel Core i3 3220, 8GB of DDR3 RAM runing at 1600mhz with a MSI Radeon HD 7870 with 2GB of DDR5. I will not be playing in HD.
Get a Quad-core, my Athlon ii X2 can't run this :/
As of now, probably not too well. Right now the game is HORRIBLY optimized. Also the game is super CPU intensive.
Your CPU is what stands out. And the 7870 is okay but as taste said the game is not optimized.
A 680 you will get 35 fps average on normal settings in a normal populated continent.
Dual 690s it uses more video memory than it should. Way more.
And for kicks and giggles I tried it on a GT440 with 3 GB of Crucial Tac memory on an absolutely ancient mobo and celeron cpu. Surprisingly it ran at low settings max FOV at 30 fps. SOMEHOW...
But yes... as long as you improve your cpu you should be "okay".