It's probably to do with the delta pressure over the fins that would allow for better heat transfer. I thought the same when I got one.
1 year ago | 2
If it’s extruded that may just be the easiest way to get all the geometries with minimal finish work. The orientation will make a difference but the heat sink is likely big enough to mitigate it most of the difference. Also possible it was an oversight
1 year ago | 0
It could be that they'd have to cut off more material to make the flat area where the fan is, if the fins went that direction.
1 year ago | 0
VoltLog
I was playing with the Pi5 these past few days and I noticed something interesting about their original custom cooler. Am I wrong in thinking that the heatsink fins should be oriented longitudinal to the exhaust of the cooling fan for better airflow, lower noise and increased efficiency? Why did they do it this way? It's a custom piece so they could have done it any way they wanted to.
1 year ago | [YT] | 23