This is a dedicated clip-on cooling solution for the RPI5, it combines an aluminium heat sink with a temperature-controlled blower fan that keeps the RPI5 at a comfortable temperature, it covers all the main chips with a thermal pad interface. Under every day use the heat sink does such a good job of cooling that the fan hardly comes on, and only really kicks in when you are pushing the hardware with demanding tasks. Comparison tests have shown it to be equal to or better then other more expensive thermal solutions, but the main benefits I see for my uses are that it is compact, doesn't obscure the GPIO or other periferal sockets and is very high quality. I like the Raspberry logo that is etched into the metal, which is a "cool" touch.