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A Raspberry Pi 3 or 4's main processor and Ethernet controller both generate meaningful heat under sustained load, and this set of three self-adhesive aluminum heat sinks is sized and shaped to match those specific chips directly, giving passive cooling without needing a fan, extra wiring, or any power draw of its own.
The set includes one larger heat sink specifically for the Broadcom main processor, which generates the most heat of any component on the board, a second sized for the Ethernet controller IC, and a third spare that can be applied wherever else a bit of extra cooling seems useful. Thermal resistance is rated at 27 degrees C per watt, a genuinely useful figure for estimating how much temperature reduction to expect under a given heat load.
Installation is as simple as peeling the adhesive backing and pressing each heat sink onto its matching chip - no thermal paste, screws, or disassembly beyond what's needed to access the board itself. The low-profile design means the heat sinks add negligible height to the board, important for builds using a tight-fitting case where a taller active cooling solution wouldn't physically fit.
Raspberry Pi 3 and 4 owners running their board under sustained CPU load (a media server, a always-on home automation hub, a compute-heavy project) who want some passive thermal headroom without adding a fan or its associated noise and power draw will find this 3-in-1 set a simple, low-cost way to keep the board running a bit cooler.
| Brand | Generic |
|---|---|
| Selling unit | PCS |
