I started this rig with different PC cooler, it was "be quiet! Pure Rock" and in front of the case it had two 140mm Corsair fans (Red LEDs). Early this year (2019) I decided to change aestetics - installed Kraken X62, added 140mm fan on top. Temps dropped a lot, looks way much better and installing kraken x62 was a pleasure. After that I OC'd 6700k to stable 4.4 Ghz without increasing vcore (1.28V). GTX 1080 does awesome job at running every game at 1440p, works perfect with my ROG SWIFT PG279Q monitor.