“Well. It's a very tight squeeze to try to fit it in between the IO pins, camera connecter and the screen connecter.
I would like to suggest that you remove one row, and one column of fins from the heat sink.
Then vary the thickness of the base of the heat sink so that it will contact with the memory chip, wifi module and use the two surface mount components next to the memory as registration points for the heat sink.”
“If you choose passive cooling for your Raspberry Pi, this is the heatsink for you! I have a ton of those cheap heatsinks that you get with other cases sitting in my leftovers drawer. This is quality starting with the size. The more surface area the better for passive cooling. The metal used is heavy. The adhesive is strong and allows great heat transfer.
If I had a suggestion, it would be to make this work with the Fanshim!”
“Doesn't fit as advertised. Purchased a new 2GB Pi 4 with this heatsink. This photo shows it mounted with the long side parallel to the GPIO connector. The heatsink won't lay flat against the processor this way - it doesn't fit between the display connector and camera connector (too wide). I rotated it 90 degrees and it fits that way. Unfortunately, because the heatsink is mounted off-center if there's any pressure applied to the edge near the power connector, the heatsink tilts and falls off. Hmmm... not so good.”
“Not a good mechanical fit, sloppy application of double sided tape* at the bottom of the heatsink and generally not the quality you would expect from Pimoroni. Better off looking for an alternative as this is clearly a last minute addition to the catalogue that didn't go through much testing at all.
* 3M 9448A: Not rated for thermal transfer applications, check datasheet.”
“Doesn't sit well on the Pi 4. The edge runs along the gpio so not ideal for using hats. I assumed that it would have a thermal pad covering the ram chip too. Ended up using a smaller heat sink in the end. Not the end of the world though!”
