The Flirc case easily passively cools a stock pi 4. If you want to push over _voltage=5 and 2075 MHz, you’ll want to pop off the plastic top of the flic case, as that will net you a sizable drop in temp.I've long thought about getting a Pi to tinker around with but have never done so. Just curious about your expereince with the aforementioned FLIRC pi 4 case. Does it provide enough passive cooling to run all four cores on WCG (or other DC projects) 24/7? As I started to search for Pi4 cases and read reviews I saw a lot of mixed thoughts out there about the amount of heat generated and the cooling provided by these cases.
Do note that I run 10 pis in my basement, mixed between Rosetta and open pandemics. The basement rarely gets above 68F, so YMMV on passive cooling in warmer ambient temps.