But why stop with just the processor? He added heat sinks to the SoC, Ethernet/USB chip, and voltage regulator. From his parts bin he grabbed a small heat sink that was probably used on a graphics ...

Combined with a small heatsink, the fan works with the official case that comes with the Raspberry Pi 4, which was announced last year. It's powered by a 1.5GHz quad-core ARM Cortex-A72 processor ...