After careful consideration I decided to go ahead and do my first ever build! The only gaming pc I've ever owned is actually a budget gaming laptop, which probably doesn't even count lol.
I have my PC set up in my home office. I game there sometimes, but most of the time I actually stream via the steam-link to by generously proportioned 1080p living room television. As 1080p is the max resolution I have any interest in, anything over the RX 580 8gb or GTX 1060 6gb would be overkill. This was the hardest decision in the build for me, but both cards have good benchmarks with current AAA games and the 580 seems a little more 'future proof' with its better support of the APIs of the future. The whole free-synch thing won some bonus points with me too.
I opted for the 1700x. The extra cores should be helpful as future AAA games are better able to use them. Presently, the extra cores let me use CPU encoded streaming with the living room steam link. While less efficient, the 1700x leaves me plenty of cores to work with, and it helps keep any extra load off my GPU. With this setup, I have yet to find a AAA game that I can't keep at 60fps on 'ultimate settings', obviously 1080p. Almost went with the 1700 and stock cooler, but then I would have had to venture into overclocking... which I will leave for another day.
I'm not unhappy with the chosen ram, good price and great specs. With that said, I've run into the known mobo issue where I can't yet get it running anywhere near 3200. The Gigabyte AB350 mobo is slowly rolling out bios updates to offer better ram compatibility, and truthfully the machine is running amazingly well, so no rush. That said, I probably could have researched the RAM a little better and chosen a pair (maybe for a few dollars more) already better supported by the current bios.
Very happy with the Samsung SSD. I was confused for a bit installing it into the Fractal Design R5 case, until I realized it wasn't meant to be installed into one of the drive bays, but instead there are two little spots tucked behind the mobo for 2.5" SSDs. The R5 case was awesome to work with for a first timer. Everything hooked up nicely, though I was nervous on a few of the pieces that required a little more force. The case itself is perfectly 'low key', exactly what I needed/wanted in my office space.
Overall quite pleased with how it turned out. The zippiest computer I've ever owned (by a mile) for regular desk work, and it is streaming AAA content to my living room like a dream. Very happy :)