I currently have a nvidia Geforce GTX 570 with 1.25 GB VRAM and am looking to upgrade for current-gen games coming out soon like Witcher 3, Arkham Knight, Cyberpunk 2077, Dragon Age II, Far Cry 4, and Shadow of Mordor. I was looking at the GTX 770 with 2 GB VRAM. The cheapest I have seen it is...