Raspberry Pi 4 Aluminum Heatsink and Fan Cooling Kit

A Raspberry Pi 4 under real sustained load - video transcoding, machine learning inference, anything CPU-heavy for more than a few minutes - throttles its clock speed once it hits thermal limits without active cooling, quietly slowing down rather than failing outright. This kit pairs a CNC-machined aluminum heatsink with a small low-noise fan (the updated 3510 version) to keep the board running at full speed rather than backing off under thermal pressure.

Thermal tapes are included specifically sized for both the 3B+ and 4B board layouts, so the heatsink makes proper thermal contact with the CPU regardless of which board it goes on rather than needing separately sourced thermal material.

Standard upgrade for any Raspberry Pi 4 or 3B+ project running sustained workloads, headless servers running 24/7, or any build where thermal throttling would actually matter to performance.