RPi CM4 Heatsink

15 Jun 2021

In anticipation of the LiM Carrier Board prototype for the RPi CM4 arriving, I ordered some heatsinks. I showed the idea of the LiM Carrier Board to Jeff Geerling and his comment was : “Slap a heat sink on top of the CM4 and put it in a little box and you have a truly wireless computer you can throw into any scenario…” To be honest, this was exactly what I am trying to aim for with the LiM Board, create a Raspberry Pi Zero W on steroids.

I decided to order a couple of the 12mm Aluminum Alloy Heatsink (C235) for Raspberry Pi Compute Module 4 from Geekworm.

Pic-1: 12mm Aluminum Alloy Heatsink (C235) for Raspberry Pi Compute Module 4 - Image credit geekworm

Update - June 29, 2021: The heatsinks arrived. I received them a ouple of days ago but have not have a chance to post yet.

Here are some pictures of the heatsinks with the CM4 and a matchbox for size comparison. I haven’t installed the heatsink(s) yet as I am waiting for the LiM(+) board prototypes to arrive but I am posting a 3D render of what the assembly will look like.

Pic-2: 12mm Aluminum Alloy Heatsink (C235) on top of a Raspberry Pi Compute Module 4

Pic-3: 12mm Aluminum Alloy Heatsink (C235) on top of a Raspberry Pi Compute Module 4 with matchbox for comparison

Pic-4: 3D render of the LiM+ Board, CM4 and heatsink assemply