Raspberry Pi OS • Re: Pi5-16GB performance issue with NVME data disk

Pi5-8GB boots from a Kingston A400 connected via a Startech USB SATA adapter. Data disk is a Kingston NV3 500GB NVME drive on a Geekworm X1001
Pi5-16GB boots from a Kingston A400 connected via a Startech USB SATA adapter. Data disk is a Kingston NV3 500GB NVME drive on a GeeekPi N04

Would there be any performance affecting difference between Geekworm X1001 and GeeekPi N04?

Thanks! I realize that I didn't test my Pi5-8GB that has an N04 on it, so I just did that. It got the same results, in fact a bit faster, than the Pi4-8GB X1001:

Pi5-8GB N04: 2min 8sec (N04)
Pi5-8GB: 2min 20sec (X1001)
Pi5-16GB: 3min 35sec (N04)

As I see it, a possible difference between the 8GB and 16GB models is the D0 stepping of the latter. The new stepping is rumoured to be required for addressing 16GB RAM.

Is it possible something at the driver level adds the equivalent of a bounce buffer?

I'd try mem=8G on the Linux command line to see if that makes any difference. It may not.

Statistics: Posted by ejolson — Wed Jan 15, 2025 11:05 pm

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