Maximum CPU Cooler Height 170mm
Compatible Corsair Liquid Coolers H55, H60, H75, H80i, H90, H100i, H105, H110i, H115i, H150i
Of course there may be motherboard/RAM issues, but a lot of companies have been better at that recently. Plenty of RAM is available in short stuff these days (everything new is old again, I guess), and still has decent heat spreaders.
A Noctua NH U12s
is 158mm tall without a fan. Noctua is really good about making room for RAM too. I'm positive multiple people have this cooler on this forum, so maybe they can attest to the clearance for certain varities of RAM.