One small update, I wanted to overclock the Raspberry Pi 4 as I'd added some PSP games and performance was not great. I tried a couple of different emulators and adjusting graphics settings without much success so I decided to replace my original cooling solution.
I had printed a case which included a top part to house a fan nut it always felt like an improvised solution. I also had a heat sink on the CPU and while I never had any overheating issues, I didn't want to take any chances when I started to push things.
I bought an Ice Tower cooler which is a great cooling solution and is both compatible with the Raspberry Pi 3 and 4. There are 2 metal brackets that attach via the Pi's mounting holes and the kit is supplied with everything needed to securely mount it to the case. They even included a spare fan. The one fitted to the block is transparent and lights up but the spare is plain black.
