this post was submitted on 28 Sep 2023
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[–] [email protected] -1 points 1 year ago* (last edited 1 year ago) (1 children)

One of the most exciting additions to the Raspberry Pi 5 feature set is the single-lane PCI Express 2.0 interface.

~~IIUC PCIe2.0x1 means 0.5GB/s, which is slower than USB 2 (I'm talking USB 2 specs - no idea how USB actually performs in PIs). I can't wait for people to buy that NVME hat and mount WD Blacks on that :)~~ READ BELOW

[–] [email protected] 26 points 1 year ago* (last edited 1 year ago) (1 children)

USB 2 is 480 Mb/s, not 480 MB/s. 480 Mb/s is 60 MB/s, so the 500 MB/s from PCIe 2.0 x1 is quite a bit faster and is about the limit of what a SATA 3 interface could do. Also, sequential throughput isn't nearly as important as most people think. Random IO, which NVMe drives excel at, will make a far more noticeable impact on real world performance.

[–] [email protected] 1 points 1 year ago

Good catch on my megabit vs megabyte blunder!