“I actually bought my ICE-Tower from China and have been using it for a few months on the RPi4. Great that PiHut have now started to stock them because they are the ultimate passive/active air cooled solution. You can run it without the fan active and still achieve great cooling results! For the price it's a 'no-brainer' - I paid approx. £28 [GBP] inc delivery from China for mine. All you need to watch out for with the ICE-Tower is the metal bracket near the PoE hat pins to make sure they don't touch each other. Fantastic product which I cannot rate highly enough. Any Raspberry Pi 4 over-heating issues you may have will be gone forever with this cooler.”