I am on a budget, and I just built my first computer. It has an AMD A10 5800K, 8GB RAM(soon to be 16gb) @1600, 550W PSU. I don't play high end games. I am not sure if I want to go to dual graphics or just a GPU. I was thinking about radeon HD 7770. I want to play saints row 4 and bf3. Any ideas? My budget is around 100-130$ at most. I Cannot spend much because I am 14 without a real income.