Hi! I have enough money to buy my first mid-to-high range graphics card. I currently have 2 GTS 450's in SLI. i can run alot of games, but i can't run Assassin's Creed IV at all. i was wondering what current cards compare to the SLI setup, that way i can find something better. if i can save some money that would be cool too. thank you all for reading.