I'm looking to get 2 x gtx 980ti. I've never had an sli rig before. What's your experience with sli is it worth it or a complete hassle. Do most games work ok or will I spend most time tweaking
It's really worth it. Dual 980Ti's are my second run at SLI since the old 7950GX2, and honestly so far it's been like using single powrful card.
The only game I've found that doesn't work with it so far is the new Batman, although that's so broken all around that they pulled it off of Steam.
I game at 1440p, and being able to max everything is brilliant.