Well the card at stock settings would thermal throttle, and I never changed that or made an attempt to overclock, there wasn't much need. It was set to back off at 75C, but still hovered around 1900Mhz under load. Super quiet though.
I pretty much did it because I already bought the block, I wasn't expecting a big performance boost.
Even at 5Ghz the 7700k only beats my i7-4770k @4.3Ghz by about 20% in cinebench.
I built it because it looks cool, and now I have to figure out what to do with the old system. i7-4770k, Hero VI, 2x8GB 1866, GTX980 (Single reference or water cooled, or 980 SLI watercooled, haven't decided) pair of 256GB OCZ Vertex 4, Evo 212 with SP120 in push pull, and a pile of corsair fans in a Bitfenix Ghost. Probably set it up this weekend.