For $40+shipping, the HB bridge is worth it. I see smoother and higher fps running 7680x1440 at 120Hz than a single flex bridge. I actually held on to Crysis 3(unopened) until I replaced my old 3930 w/ 680SLI. Using ULMB with an Eizo with 2 PG279Q on the sides. Granted, I had to turn down AA, but everything else is on ULTRA or highest setting and I get at least 55-60fps on the most detailed levels that would normally get 27-35 using max AA settings in Crysis 3 surround gaming. This is on my new 5960x setup at 4.7GHz. I didn't think a future capped Titan would be better than 1080 SLI.
Only minor issue is FTW SLI generates some heat(72*/65*) and I got 8 case fans and an EK 360 push/pull(6 more 120s) in a Corsair 900D. Fans on 100%(gaming mode) with room ambient at ~23*c. Total system power on my UPS peaks at 860 watts load. Never thought I'd reached my capacity from my 1500va UPS with only 1 pc on it. A good problem to have...