This build ended up costing around $1,400 (including tax) when we finally bought it about a week ago.
We successfully installed both Windows 10 & Ubuntu on the SSD (even though I had to reinstall Windows after discovering I should've unplugged the HDD first).
The machine is used for music production with Cubase and some plugins, and also some light gaming, like Fortnite.
There have been no issues in terms of speed or usability.
Copying from the SSD to the HDD and vice-versa resulted in speeds of up to 130 MB/s. Moving files within the same storage disk was instantaneous.
The case provides a "fan controller" cable that would be connected to a NZXT Sentry 3, for example, as it can't be connected to the motherboard. It's fine if you don't connect it anywhere, though.
More information about each part down below in the part reviews.
All in all, this is the fastest computer I have ever used myself.
Benchmarks with Cinebench resulted in a CPU score of around 1741, and 110fps for the OpenGL test. We own a $2,600 iMac from mid-2017, which scored a CPU score of 746 in Cinebench.
If anything would need to be upgraded here, it will most likely be the RAM. 16GB may be more than enough right now, but may need to be upgraded in the future. Fortunately, that's easy to do, and shouldn't cause any troubles.
There's the possibility of adding at least one more fan to the case to keep temperatures even lower, and maybe we will try to connect the fans directly to the motherboard somehow (as they are 3 pins), but right now we'll leave them the way the came.
CPU has never reached above 20% usage as far as I could see, keeping the temperature at around 40-50ºC.
A nice, quiet budget cooler.
The mounting adapter was included in the package from Newegg, make sure you request one from the CoolerMaster store if you need one.
A very nice budget motherboard for the AM4 chipset. Nice BIOS, and the App Center from Gigabyte lets you configure various things, like the RGB.
It may be a bottleneck in the future, however as of now it hasn't gone above 30% usage, keeping at 2-3GB usage when idle.
A very nice SSD that has given no problems so far.
An incredibly fast HDD with large capacity and barely any noticeable noise.
40-50 fps on Fortnite at Epic settings with 99% load in "Gaming Mode".
Beautiful case with side panel, very clean and easy cable management. Includes 2 "Pure Wing 2" fans.
However, the fans are connected by default to the case, which includes a controller for the fans with 3 speeds. The case provides a "fan controller" cable that would be connected to a NZXT Sentry 3, for example, as it can't be connected to the motherboard. It's fine if you don't connect it anywhere, though.
Has been able to power everything completely fine.
High read speeds, not sure about write. Makes a lot of noise on boot, though.
Can find WiFi signals of 2.4 GHz on its own. Using the antenna provided it can locate 5 GHz signals and the range is significantly improved.