Have you looked in on using the cooler from an laptop ?
Dual heatsink, dual pipes and single fan, they do manage to take care of an quad cpu and a gpu and pack a lot more punch than one would think and you can easily get them of ebay or aliexpress like this one... https://www.aliexpress.com/i/32831233470.html
Hi !
Just want to introduce myself...
53 years old, Swedish, grew up with a lot of different consoles, have PS3, Xbox360, Xbox One and OG Xbox which is still my favourite...
Play games on the PC as well besides working...
Have a nice one...