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For what it’s worth, unless you’re somehow able to dedicate a PCI-E lane to a USB port, the USB spec will be what limits you. I switched a Pi4 to boot from an o
by ascagnel_ 6y ago
For what it’s worth, unless you’re somehow able to dedicate a PCI-E lane to a USB port, the USB spec will be what limits you. I switched a Pi4 to boot from an older, spare USB SATA SSD a few weeks ago, and it’s reporting 1566MB/924MB on the same hdparm tests as the article (about a 10% drop-off).
- davrosthedalek 6y agoSATA III is 600MB/s max. So either something is funky with the hdparm test (host side cache?) or it's not SATA.
- ascagnel_ 6y agoThe run uses a cache (hdparm -tT); I was more interested in relocating the results in the screenshot [0] than doing a more relevant test. [0] https://miro.medium.com/max/1400/1*xcGnOTsPvZtPdGSj8yODiA.png https://miro.medium.com/max/1400/1*xcGnOTsPvZtPdGSj8yODiA.pn...