I currently own an EVGA GTX 650 ti boost 2gb and it's the reference style card. I'm looking to buy another GTX 650 ti boost to improve my fps. I've finally settled on the MSI GTX 650 ti boost 2gb twin frozr gaming edition. I want to know if these two cards are sli compatible. Unfortunately I can't afford a new model graphics card. But if you know of a card that is in the price range $100-$200 dollars and will do better than these two put together please let me know. Thanks