I built this machine about a month and a half ago and have been running only windows 8.1 and havent minded using it that much but I am a pretty casual gamer and I need the computer for everyday tasks and to edit in Final Cut Pro. I have windows to play the occasional game. Putting mac on this computer was such a hassle. I have made 3 or 4 hackintoshes before this one and they all were quite seamless but with this computer I kept getting strange issues. No one on the internet were getting any of the kernel panics or hangs I was getting when booting but I eventually figured it out. The computer has only been running osx for a couple of hours but it flies through the UI. Haven't tested FCPX yet but I downloaded and can imagine that it will fly. Havent tinkered with over clocking with amc yet because sometimes overclocking can cause issues with osx. I got the cpu to 4.6 easy with the h75 and it was staying around 60-70c running prime 95
If I was building this computer right now I would have chosen a lot of different parts but until x99 and gtx 900 series cards get osx support this will be what I am using. I expect x99 and 9xx to be compatible with mac in the next few months and when that happens I will most likely upgrade to a 5820k with an asus x99 deluxe with 16 or 32 gb of ram and a gtx 980. And probably raid 0 ssds and a custom loop.