Why is the SSD enclosure benchmarking so low thru the monitor hub?  


  1. orlando1974
    Posts : 239
    10
       New #1

    Why is the SSD enclosure benchmarking so low thru the monitor hub?


    I find this weird and I'm hoping someone can explain why the SSD enclosure is performing so poorly when connected to the computer thru the USB port built-in the monitor?

    If you look at the numbers for the 5400RPM Seagate BackupPlus, the numbers are almost the same for a direct PC connection as they are thru the monitor:

    Why is the SSD enclosure benchmarking so low thru the monitor hub?-4tb-backupplus-portable-connected-directly.jpg Why is the SSD enclosure benchmarking so low thru the monitor hub?-4tb-backupplus-portable-connected-monitor-hub.jpg

    But for the SSD drive inside the enclosure, it doesn't even compete with the 5400RPM when connected to the monitor.
    However, it has the expected speeds when connected directly.

    Why is the SSD enclosure benchmarking so low thru the monitor hub?-128gb-ssd-enclosure-connected-directly.jpg Why is the SSD enclosure benchmarking so low thru the monitor hub?-128gb-ssd-enclosure-connected-monitor-hub.jpg

    Why is there such a massive difference for the SSD drive that is dependent on where it is connected? And why cant it at least reach the speed of the 5400RPM drive when connected to the monitor?
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  2. EdTittel
    Posts : 4,224
    Windows 10
       New #2

    It could be the cable between enclosure and monitor, or it could be the cable between monitor and tower. I recently bought an NVMe x4 5/10GBps-capable enclosure whose cable returned abysmal transfer results. As soon as I swapped in a faster 10G rated cable the rates went up as much as a decimal order of magnitude. Wrote about those findings here: USB Cables Make Amazing Differences.
    HTH,
    --Ed--
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  4. orlando1974
    Posts : 239
    10
    Thread Starter
       New #3

    Hmmm... but if the problem was the (included) cable between the enclosure and the monitor, the issue would carry over when the same is connected to the tower no? (since it is the same cable)

    And similarly if it was the cable between the monitor and the tower, I would expect to have a similar massive drop when connecting the external 5400rpm drive to the monitor as I do when connecting the external SSD (enclosure) to it... no?
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