Am currently running two evga 980 hydrocoppers in SLI. Interested to go to 1080 gtx SLI also under water. Bearing in mind the range of opinions I've read on 1080 SLI, from 'it's a nice step up' to 'it doesn't perform well, lots of micro stutters and lack of developer support', and 'it's not a sufficient enough generation gap between cards'- therefore am not sure if it's a suitable upgrade. Don't know anything about the much rumoured 1080ti. can anyone share any experiences on 1080 in SLI? edit: didn't see the announcement on evga ftw blocks on previous page...Also, I can't get a straight answer out of anyone on evga releasing a 1080 Hydrocopper.... I've read they are releasing one, but also that they're not because they had a falling out with EK.
I have two 1080 fe's in sli which are wc'd. I don't get to play much (wife, 1yo kid, demanding job) so I limit myself to a few games namely Rainbow Six Siege, Battlefront, BF4, Doom and Star Citizen (which is in Alpha still). Rss now scales very well with sli as do the dice games. They amazing in fact.
Doom doesn't like it at all and neither does SC however, both work just fine with a single gpu which still maxes out my X34's refresh rate at max settings with zero issue.
I went sli as RSS would only reach mid 70's fps at recommended settings on the x34 and the frostbite games were in the 80's. Now I can reach 95 fps at max settings and even bump up the resolution scaling A LOT for an even sharper image.
It took some fiddling to get it working smoothly but now I just turn SLI on or off dependent on game and that's as much thought as I give it. I use the HB bridge too which does have an effect when say playing bf4 at 3440x1440 at ultra and with 150% resolution scaling. I've only detected stutter during the slow sweeping camera panning in Heaven but not in any game so far.
I'd say go fot it. I'd also say go for 2x ti's if you could afford what ever silly price Nvidia give them. You'll be super future proof then.