looking for external ssd drive recommendations  


  1. Posts : 29
    WIN10
       #1

    looking for external ssd drive recommendations


    i'm looking for reliable and fast ssd drive, that will use as my system drive (windows 10).
    what should i be looking for?
    (500gb is enough)

    should i buy usb3 drive or m.2 drive connected via usb3 enclosure? will that be giving me some advantage?
      My Computer


  2. Posts : 2,068
    Windows 10 Pro
       #2

    So, a lot would depend upon what USB interface you use. A standard USB 3 connection is a 5Mbps connection. That comes down to a max of about 640MB/sec. Most SATA based SSD's max out around 550MB/sec.....so they can just about fully saturate the USB 3 bus.

    The newer spec is USB 3.1 Gen 2. This uses a 10Gbps lane. So, 10,000 bits per second/8 bites to a byte = 1,250MB/sec. You will typically only get 75-80% with USB overhead, so about 1,000MB/sec.

    The absolute fastest USB spec today is USB 3.2 Gen 2x2. That uses a pair of 10Gbps lanes, so maxed at 20Gbps. If you do the math 20,000/8 = 2,500 megabytes per second. USB with overhead usually gets about 75-80% of max theoretical speeds, so 2500 x .80 = ~2,000 megabytes per second.

    To get the max out of an external NVMe it really needs to be connected via Thunderbolt.


    So, to reiterate
    Standard Hard Drive via USB 3 is about 170MB/sec
    Standard Sata SSD via USB 3.2 Gen 1 is about 500MB/sec
    An NVMe via USB 3.2 Gen 2 is about 1000MB/sec
    An NVMe via USB 3.2 Gen 2 x 2 would tap out around 2000MB/sec


    The biggest advantage to an SSD is ultra low random access time. You get pretty much the same speed regardless if it's SATA, or NVMe....so the advantage here is the same.
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  3. Posts : 2,487
    Windows 10 Home, 64-bit
       #3

    Some M.2 enclosures will accept only NVMe drives. Be careful about that.

    I'm using a 500 gb WD SN550 NVMe with a TDBT enclosure. Very happy with it, but it's not a system drive.....data only. It's faster through the USB type C port, but not by much....maybe 10 percent.

    About 55 bucks for the drive and 24 for the enclosure.
      My Computer


  4. Posts : 1,197
    11 Home
       #4

    pparks1 said:
    So, a lot would depend upon what USB interface you use. A standard USB 3 connection is a 5Mbps connection. That comes down to a max of about 640MB/sec. Most SATA based SSD's max out around 550MB/sec.....so they can just about fully saturate the USB 3 bus.

    The newer spec is USB 3.1 Gen 2. This uses a 10Gbps lane. So, 10,000 bits per second/8 bites to a byte = 1,250MB/sec. You will typically only get 75-80% with USB overhead, so about 1,000MB/sec.

    The absolute fastest USB spec today is USB 3.2 Gen 2x2. That uses a pair of 10Gbps lanes, so maxed at 20Gbps. If you do the math 20,000/8 = 2,500 megabytes per second. USB with overhead usually gets about 75-80% of max theoretical speeds, so 2500 x .80 = ~2,000 megabytes per second.

    To get the max out of an external NVMe it really needs to be connected via Thunderbolt.


    So, to reiterate
    Standard Hard Drive via USB 3 is about 170MB/sec
    Standard Sata SSD via USB 3.2 Gen 1 is about 500MB/sec
    An NVMe via USB 3.2 Gen 2 is about 1000MB/sec
    An NVMe via USB 3.2 Gen 2 x 2 would tap out around 2000MB/sec


    The biggest advantage to an SSD is ultra low random access time. You get pretty much the same speed regardless if it's SATA, or NVMe....so the advantage here is the same.
    Just to avoid any confusion... here's the full explanation:
    What’s the difference between USB 3.1 Gen 1, Gen 2 and USB 3.2?
      My Computers


  5. Posts : 16,005
    Windows 10 Home x64 Version 22H2 Build 19045.3448
       #5

    shadtal said:
    looking for external ssd drive recommendations
    shadtal said:
    i'm looking for reliable and fast ssd drive, that will use as my system drive (windows 10).
    Please would you confirm just what your objective is because these statements seem to be contradictory. Windows generally runs on an internal drive not an external one.

    Denis
      My Computer


  6. Posts : 29
    WIN10
    Thread Starter
       #6

    Try3 said:
    Please would you confirm just what your objective is because these statements seem to be contradictory. Windows generally runs on an internal drive not an external one.

    Denis
    my objective to to run win10 from en external drive, and when i plug it off, it will boot from the m.2 NVMe drive which is onboard.

    - - - Updated - - -

    Thanks for all answers.
    my MB is: Z390 GAMING X (rev. 1.0) Key Features | Motherboard - GIGABYTE Global
    i don't see any usb 3.2 support here, am i right?
    So what will be the best option to external drive on my pc?
      My Computer


  7. Posts : 13,179
    Win10 Version 21H2 Pro and Home, Win11 Pro and Home
       #7

    I've never found a bootable USB drive with Windows installed to be of much use, not like building a Bootable USB thumb drive from a version of Linux with its USB Image Writer and using an .iso download for the Source [I carry that drive in my pocket when I'm out and about working with clients]. Windows seems to have issues running itself and programs from removable devices. Also, removing a booted drive still requires rebooting the computer, Linux warns to remove the drive then hit Enter to Shutdown or Restart.
      My Computers


  8. Posts : 29
    WIN10
    Thread Starter
       #8

    Berton said:
    I've never found a bootable USB drive with Windows installed to be of much use, not like building a Bootable USB thumb drive from a version of Linux with its USB Image Writer and using an .iso download for the Source [I carry that drive in my pocket when I'm out and about working with clients]. Windows seems to have issues running itself and programs from removable devices. Also, removing a booted drive still requires rebooting the computer, Linux warns to remove the drive then hit Enter to Shutdown or Restart.
    i find it very usufuly to my need but after you sayd there will my issues, i started afraiding.
    is this problematic configuration?
      My Computer


 

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