I am upgrading an old pc for gaming. A really old one that it even has a disket card. I already bought a MoBo (Gigabyte GA78LMT-S2P) and the CPU (AMD II X2 270 3.4GHz Regor). All I need is a GPU that could play Battlefield 3, Borderlands 2 and League of Legends. My budget is between 130$-163$. Plz help me pick one gpu.