Running a double (not SLI!) setup of 2x1080ti FTW3 myself and was asking this question myself.
Priority for me was to have it as quiet as possible while beiing cool also.
Bought, after quiet some research, a Dark Base 900 and absolutely LOVE it. Its quiet AND cool. Also there is plenty of space when tweaking.
If you buy it, do yourself a favor and also buy one or two Silent Wings 3 (140mm) for the top of the case. But you can also use your Noctuas there!
First i had the graphic cards working in a normal MidiCase- temperatures and noise were both horrible! Then i used it open air without a case. Temperatures were better, but noise and dust was a big problem. With the Dark Base 900 its quiet and cool (comparable with open air). If i open the case it gets louder and hotter.
Yeah, its BIG, but the best you can get. Temperature difference between top and bottom card is about 2-3 degrees celsius for me. thats at FULL LOAD at Powertarget 55%, Fan speed 30%.
post edited by Tanakis - 2018/12/08 07:38:52