I currently have a Sapphire Vapor X Radeon R9 280X TRI X (pretty horrendous for gaming), and I was planning on upgrading it very soon. I dont need the top of the line $1,000 GPU, but I would like a decent one. I would like a 980 ti, but I would prefer to keep the price $400 or lower. With $400 or lower, would it be possible to get a 980 ti? If not what would be the best option for that price range? Also on a side note, should I keep my currently GPU and run duel GPUs? (current motherboard is AM3+ Asus M5A99X Evo R20, I dont know if that matters)