Substitute heatsink?

[chrestomanci]

My RockPro64 finally arrived, and when I unpacked it, I realised that I forgot to include a CPU heatsink on my order.

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Maybe one of these?

https://www.amazon.com/dp/B07YR6M6F6/ref...uEbRV6TC7V

https://www.amazon.com/dp/B07W3MJ9Y2/ref...uEb6F0P2QB

Thanks, though that was not what I had in mind. I would rather not use glue if possible. I was hoping to find something with screws or pushpins that would fit on the existing mounting holes.

I have used the mechanical drawings on the Wiki, and found that the two mounting holes are 55.5 mm apart so a heatsink that is 40mm square would fit. It looks like that was a common size for Northbridge heatsinks back in the day, so I will look through my collection of old PC parts, to see if there is a motherboard I could cannibalize.