Just build in a Lian-Li o11 dynamic, Corsair HX psu. I honestly don't hear it over other ambient noises around (AC, road outside, etc)... I am using an AIO 360 for top-exhaust, but it's a far cry from a custom open-loop, not much harder than a regular HSF. Been very happy with it so far.

(rambling ahead)

Using an r5-3600 as a placeholder waiting for a 3950X. Was running an i7-4790k since that dropped, and wasn't unhappy with it, but there are things where it gets sluggish with the 4 cores, etc. I have definitely noticed the performance difference. Also jumped to Linux (Pop!_OS) from 2 years of hackintosh. I need to update to kernel 5.3 and update video drivers before swapping the older rx570, with an rx5700xt aftermarket.

Actually being able to order certain parts has been a bit of a pain though.