I'm not too sure
I can get a pair of 970's for 300$ each, the 980TI isn't too much more but it would still have less raw performance, right?
I have an AX860 so there shouldn't be any problems powering either setup.
I've read from numerous sources that SLI is a bit better than Crossfire. I had a crossfire setup before and didn't have any issues with it, so i'm not really worried.
suggestions on both sides?