Tall has nothing to do with cooling, but some cases dont have that clearence, and it is still unneeded stress even for a motherboard mount.
I wouldnt trust something too tall to sit in there, but thats me.
And a water cooler setup isnt too hard to do, if you really want simple, check out the Koolance EXOS system, its easy to install, but it is expensive.
I would also wait for a comparison review of the cooler, to see how it stacks up against other air coolers.
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