I use this PC for audio recording and editing. To be said, it does this EXTREMELY well, so I certainly can't complain. It's overclocked to 4.4 GHz and remains at ~38-40° C during idle and moderate use. I haven't really put it under load, and as such, never seen this thing go above 45°. I built this with a few ideas in mind: A) I wanted to air cool; I'm just not too crazy about water cooling. B) I wanted the option to put WHATEVER I wanted in here. C) I wanted something that would last me 4+ years in the foreseeable future.
Were I to do anything differently, I would definitely chuck that Kingston V300 and grab a Samsung 850 EVO; for just a few bucks more, you get monstrously better performance.
The whole system runs quiet, works great, and looks sleek and minimal too.