I have a Nvidia GeForce Gtx 570 graphics card, AMD A6-3670, 8 gb ram, and a 650w power supply. I was wondering, I recently bought arma 3 and was getting a fps of 9-15. I was wondering weather adding another graphics card to my computer would get me a higher fps? But would it have to be more than my Gtx 570. I was looking cheap at a radeon HD 7750. Not sure if this would fix it or something else please help thanks!