Is Air Cooling Viable when using 3-SLI?

Secrios

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Lets say I had three Titan Xs linked up in SLI.
Is the setup doomed to overheat without water cooling or can fan cooling suffice?
 

Secrios

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Would the Corsair 540 Air case with noctua fans do the trick?

 

Secrios

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Just took a look and it seems pretty cool. I'll stick with the air style I know and love for now but if I get round to it, I shall upgrade to liquid somehow.