I built this as a more budget friendly 1080p gaming pc that could also handle running applications like handbrake. I first considered an Alienware Alpha for my purposes but with limited cooling options I figured that an Alpha would not do as well with handbrake. I used an Alienware Alpha for a few weeks and I was underwhelemed and I wanted something small but also upgrade-able. It is powerful enough to handle modern games at medium to high settings and with the noctua cooler it stays much cooler than the Alpha. I decided to go with an S series CPU to help with keeping temps down in this small case and because I was able to get one for a great price. The Nocuta cooler is a bit of a tight fit but works very well
CPU - Intel Core i5-4590S This is a great lower TDP i5 and I was able to get it for under $150. It should provide plenty of power for gaming and converting video files
Motherboard - ASRock H97M-ITX This is a very solid H97 board that I have used several times. It offers a great feature set for the price and includes wifi. With no plans to overclock this was a perfect option.
Memory - Corsair Vengence LP With the noctua cooler having low profile memory is a MUST. The components barely fit but work great.
SSD - Samsung 850 EVO I usually use the 840 Evo when I can get it on sale and I was able to get this 250GB 850 EVO for $94 on newegg. Its a great, very fast SSD
Graphics Card - EVGA GeForce GTX 960 4GB This is the area that I had a hard time deciding on. I really wanted to get a GTX 970 but could not justify the extra cost for the in-frequent gaming that I actually have time for. When the 960s with 4GB came out I decided to give it a shot. Depending on the game the extra 2GB makes a difference; I also got a steal on this card and so far I am very happy with it. AMD was never an option as most of their cards would not play well with the 500 watt PSU that comes with the Hadron case
Overall I am very happy with how this build came together. It was not the easiest case to build in but was very do-able. The hardest part was clipping the fans onto the noctua cooler; it was very frustrating for someone with large hands such as myself. Cable management is not the best in this case but it was better than most of the review I have read