This is not an engine. It’s a CPU heatsink: the Thermalright XP-120: The XP-120 differs from its predecessors in that the large fins are made of aluminum instead of copper. They are soldered onto a nickel-plated solid copper base. The large, hybrid copper/aluminum XP-120 comes in at a light 370 grams compared to the 590 gram weight of the all-copper SP-94. The low weight allows the standard plastic Intel retention
Understanding the Microprocessor, a bookmark I’ve had a long time that explains basic computer concepts. I studied this in a lot more detail in computer science studies at university.