Does the mini PC's manual mention any differences? Can you test/benchmark the SSD in both slots to see if they perform the same? Do you see any differences in BIOS settings?
Manual mentions nothing, this is one of those cheap chinese mini's, a GMKtec NucBox K8 Plus. I don't think by memory BIOS mentions anything. Below is lstopo output.
Not sure yet if i want to benchmark in both slots, maybe i should.. But final OS will be on ZFS root, so to benchmark i would need to create a temp FS first, and then nvme format before final OS install, not sure yet if i want to do that.
The SN850X is without heatsink, and the 'secondary' M.2 slot sits right under the top fan of the K8 Plus, and it doesn't have the intel AX200 wifi/bt card sitting right under it, so i would rather use that slot.
Not even sure if the 'middle' M.2 slot actually is secondary, i guess it's just some notion ppl have, from the discussions on reddit about this machine..
No difference whatsoever between the last ones on the right, same bus speed, same bus width; this is assuming at least one is available, because one could be routed to other controller.
Its a SoC(system on chip) CPU and and PCH are in the same die ,in this case.
Right, yea one is empty. It sits right above a intel AX200 card, and since the 4TB SN850X is double sided, the middle slot fits better..
I just haven't figured out if it's possible to find out for sure how the pcie lanes are routed on these AMD APU's, so that's why i wanted to ask...
