I built this in October 2019 and now creating this, prices have dropped significantly in a few things, but it doesn't matter because I built it when I wanted it, and I am satisfied with the results. It performs exceptionally well, although it gets quite loud when under load to keep temps low. It can be quite silent if I wanted it to by sacrificing a few degrees for lower RPMs but I set it to higher rpm since I always use headphones when gaming and can't even hear the fans. I am coming from an older build (i5 3570K/GTX970/8GB RAM) and this is a new upgrade. Also, I managed to sell the old system for $400 and that helped to reduce the cost a bit.
Building my first mini ITX PC was quite easy at first but then realized that if I had missed something, I had to pretty much disassemble everything again to install whatever was missing, so make sure you plan ahead and follow a written plan or checklist so you don't have to go through this. The GPU barely fits inside the H210i but it managed to get in there with about 2-3mm of clearance between it and the front intake NF-A14. Note that I also took the idea from others who built on this case, to put a fan on top of the PSU just below the GPU so it provides fresh air through the perforated cover to improve temps. The most difficult part of this build was the cable management since the extensions are very stiff and hard to bend, not flexible at all and if I had known this, I would've purchased another brand of extensions, but since reviews were good on these then I went for it.
My fan configuration is set to two 140mm intake fans at the front, another intake at the top 120mm and a single exhaust at the back, also 120mm and another intake below the GPU for a total of 5 fans. All Noctua, no RGB, just pure performance for cooling from a reputable brand. However, I do like RGB and the other components do provide plenty and look very good to me without the need for RGB fans.
I still have not set up properly the RGB configuration, but the GPU has an addressable port that allows syncing with the other components. I have it set on auto but I am planning to make it a uniform thing.
Gaming, temps, etc.:
I have been using this system to play mostly Modern Warfare, and initially, I was using a VG248QE from Asus (1080p/144Hz/1ms/TN) and I was getting outstanding performance, 145-165 FPS on max settings. Then after some digging around with 1440p monitors, I managed to get an outstanding deal on a BenQ EX2780Q (1440p/144Hz/5ms/IPS/Freesync) on Cyber Monday for just $300 USD at Amazon and the performance at 1440p did drop a bit, but the visual quality and clarity is way worth the small sacrifice of a few frames. It runs at 115-145 FPS on average and with Freesync enabled, you can't even notice the changes in frames. All of this with the PC running relatively cool (for an air-cooled SFF PC) between 68°C and 75°C after some tweaking to the fan curve for the 5700XT Nitro+, which by default would run much hotter (~78°C-86°C) if a fan curve is not set up properly. Nothing is overclocked (I do plan to later down the road when the extra performance is required), as a matter of fact, the GPU is undervolted quite a bit just to reduce a few degrees in temps without losing a significant amount of performance. CPU has the stock Wraith Prism with stock speeds, no overclocking here either just yet.
This particular GPU did have a few hiccups since release until I think it was early November when most problems were solved, and it was quite irritating to have games crashing and games stuttering on a high-performance card like this one. Most of the issues with it were known problems at 1080p but I managed to find workarounds before drivers officially fixed them. All in all, AMD is known to have issues with drivers at first, but then it gets better as time goes on, and as of right now (12/16/19) this GPU is performing extremely well on its intended territory which is 1440p. Since the moment I switched to 1440p, I haven't had a single stutter or crash.
Anything else that I can remember I will post on an edit of this build. Feel free to ask me anything. Hope you like it and sorry for the low-quality pictures, bad lighting, used my iPhone 8 to take them. Also still missing some more pictures of the whole desk and monitor, and the UPS as well. Will add them later on.