Passiv cooling device for orion

#1

Can you recomend a passiv cooling device like the the one shipped with Rock 5B?
Where to order?
Regards

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#2

The blue passive heatsink on Rock 5B You mention is too weak for Orion.

As the TDP of CD8081 is about 30W, I guess a 1U aluminium heatsink would suffice for decent cooling in a ventilated case. At least I used such a solution for my Rock 5 ITX and official dimensions seem the same for both boards: 84x84 mm overall size with 75x75 mm for holes, but RK3588 chip draws less power (about 15 W).

Here is my choice for Rock 5 ITX in a Factal Design Node 304 with a very low maximum temperature of the SoC under load:

It perfectly fits on Rock 5 ITX and I think this heatsink would also fit on Orion even if footprint is 85x85 instead of 84x84, but the memory chips will require taller pads for contact.

As most of us received the Orion with the mounted 8420B active cooler (preorder), I may keep this cheap solution for the moment, but if I can, I would choose a copper heatsink instead for passive cooling, maybe this one:

However, be aware that I did not test and that the backplate and/or the heatsink might not fit out-of-the-box on Orion! Footprint is 88x88 mm instead of 84x84 mm… So, please only consider this option if You don’t mind adapting/cutting the heatsink.

#3

I got this one:
https://streacom.com/products/fc8-fanless-mini-itx-case/

One single-slot, low-profile PCIe slot (network/ low-power RX 6300 GPU), passive heat-pipe CPU cooling.