Nod to https://www.reddit.com/r/PCMasterRace/wiki/builds with a note that PCMR changes from time to time. They used the AMD 450 based boards for months.
There is an issue with the 4K monitor. I don't see high 4K frame rates being possible with your build. Are you OK with sending your monitor the usual 1080 signal to get decent gaming frame rates?
I already have a RX 590, a Ryzen 2600 by itself (no heatsink) is on its way, and I have some 16 GB 3000 MHz memory I'll use until I can find some faster for cheaper (1-2 days ago there was 16 GB 3600 MHz for almost 20% cheaper so I'll keep an eye out for a couple weeks if I can find something as cheap). I need the rest of the system. Just in case it's necessary: I have a mid-tower and Freesync 4K monitor.
What do you think of the following build? https://ca.pcpartpicker.com/list/LrGHJb If you think something else would be better, please have the price in a similar range (I could go a--bit--higher).
Thank you kindly