All the parts are purchased from Arvutitark (www.arvutitark.ee). Indicated prices are actually paid on August 28th, 2015.
This PC will be used for heavy coding, testing and gaming with silence in mind (when not gaming). It won't be overclocked and will operate at stock speeds.
Decided to go with the new processor i7-6700K as it uses new 1151 socket which is future-proof and new DDR4 memory which is becoming very affordable.
CPU Cooler is Noctua NH-U12S which is slim and do not cover RAM slots, efficient and silent. UPDATE - added a second NF-F12 fan for push-pull configuration to lower CPU temperature.
The motherboard is Asus PRO Gaming as it features M.2 slot which will be populated in the future, USB 3.1 and more.
Video card is Asus GeForce GTX 970 DirectCU II / 4GB GDDR5 / OC / STRIX which is great for gaming in ultra settings in 1080p and also features 0db fan mode when not loaded.
Power supply is Corsair Corsair RM750i 80+ Gold wit zero RPM mode. Very efficient PSU, a step up from RM750.
Memory is Corsair Vengeance LPX 16GB (4 x 4GB) DDR4-2133 as it has a low profile and a good price.
The case is Fractal Design Define S Black (window version). It is a very nice looking case, with a good airflow (as there is no HDD and ODD cage and a lot of space for cable management). UPDATE - added a Noctua NF-A14 - 140mm fan to the front of the case as intake to get a positive pressure inside the case to minimize dust build up and get some more fresh air inside.
Storage - 850 EVO 500GB SSD for operating system and software + Western Digital Caviar Green 3TB drive for archiving.