So, I wanted to mention the CPU cooler I got recently. Recommended from a few places online when looking at reviews, so I thought I'd give it a try. I'm blown away by the performance compared to the price point. It's not the quietist fan available, but for temp/$ it's the best I've found. It's got 4 copper pipe tubes directly in contact with the CPU, that goes to a huge radiator and powerful fan. Fits both LGA and AM4. Comes with LED in various colors if you want.
I'm running an Intel 9600K 3.7Ghz CPU currently OC'd at 4.8Ghz and still cannot get temps over 65 degrees C under a 30min stress test. Tempted to push this to 5Ghz, but I'm really not sure I need to.
Link:
https://www.amazon.com/gp/product/B0725SBNVV/
Additional tip: I have used ARCTIC MX-4 Thermal Compound for CPU paste on many of my most recent builds, and that too has performed really well. Don't go cheap on the CPU thermal paste.