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  • M.2 NVME SSD - read about it then there it is

    From David@21:1/5 to All on Fri Aug 27 17:56:38 2021
    https://www.theregister.com/2021/08/27/western_digital_components/

    Tells the tale of WD Blue SN550 having downgraded components and poorer performance without any warning to purchasers.

    https://www.amazon.co.uk/WD-Blue-SN550-High-Performance-Pcie/dp/B07YFFX5MD/

    Amazon's choice.

    Now pondering if this is still OK for my older specification MoBo (see
    sig).

    Cheers



    Dave R


    --
    AMD FX-6300 in GA-990X-Gaming SLI-CF running Windows 7 Pro x64

    --
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  • From GB@21:1/5 to David on Fri Aug 27 19:20:27 2021
    On 27/08/2021 18:56, David wrote:
    https://www.theregister.com/2021/08/27/western_digital_components/

    Tells the tale of WD Blue SN550 having downgraded components and poorer performance without any warning to purchasers.

    https://www.amazon.co.uk/WD-Blue-SN550-High-Performance-Pcie/dp/B07YFFX5MD/

    Amazon's choice.

    Now pondering if this is still OK for my older specification MoBo (see
    sig).

    Are you worried about real world performance, or benchmarks? :)






    Cheers



    Dave R



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  • From Jeff Gaines@21:1/5 to David on Fri Aug 27 21:02:28 2021
    On 27/08/2021 in message <[email protected]> David wrote:

    https://www.theregister.com/2021/08/27/western_digital_components/

    Tells the tale of WD Blue SN550 having downgraded components and poorer >performance without any warning to purchasers.

    https://www.amazon.co.uk/WD-Blue-SN550-High-Performance-Pcie/dp/B07YFFX5MD/

    Amazon's choice.

    Now pondering if this is still OK for my older specification MoBo (see
    sig).

    I bought one a couple of weeks back, paid £175 for it and it benchmarked slower on my Xeon powered HP Z230 than an SSD. WD support were hopeless
    and suggested un-installing the drivers to force an update. I put it in my
    Asus Z170-K and it benchmarks around 2033 MB/s read against 2608 MB/s for
    a Samsung NVMe. Not sure there is any practical difference though.

    --
    Jeff Gaines Wiltshire UK
    Every day is a good day for chicken, unless you're a chicken.

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  • From Andy Burns@21:1/5 to David on Fri Aug 27 21:33:06 2021
    David wrote:

    Tells the tale of WD Blue SN550 having downgraded components and poorer performance without any warning to purchasers.

    Great, I've just fitted that exact model as a replacement for a dead
    128GB Samsung in a Surface Pro4 (bugger of a job) still only £37 from
    eBuyer.

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  • From David@21:1/5 to David on Sat Aug 28 13:50:54 2021
    On Fri, 27 Aug 2021 17:56:38 +0000, David wrote:

    https://www.theregister.com/2021/08/27/western_digital_components/

    Tells the tale of WD Blue SN550 having downgraded components and poorer performance without any warning to purchasers.

    https://www.amazon.co.uk/WD-Blue-SN550-High-Performance-Pcie/dp/
    B07YFFX5MD/

    Amazon's choice.

    Now pondering if this is still OK for my older specification MoBo (see
    sig).

    Having read the MoBo spec it claims up to 8Gb/sec.
    "PCIe Gen2 x4 22110 M.2 Connector with up to 20Gb/s Data Transfer (PCIe
    NVMe & SATA SSD support)"
    I assume that this equates to 1 GB/sec (ignoring any protocol overheads -
    I used to size data connections as 10 bit to allow for "stuff").
    So a read speed of 2400 MB (2.4 GB) a second from the SSD looks not to be
    a limit.

    I am however now confused, because it says

    "Data Transfer Rate 8 Gb per second"
    (Or 1 GB/s)

    "Read Speed 2400 MB per second"
    (Or 2.4 GB/sec)

    So am I correct in assuming that the write speed is 1GB/sec and read speed
    is 2.4GB/sec?

    They are all bastards for using mixed units, of course.

    Cheers


    Dave R


    --
    AMD FX-6300 in GA-990X-Gaming SLI-CF running Windows 7 Pro x64

    --
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  • From David@21:1/5 to David on Sat Aug 28 14:03:42 2021
    On Sat, 28 Aug 2021 13:50:54 +0000, David wrote:

    On Fri, 27 Aug 2021 17:56:38 +0000, David wrote:

    https://www.theregister.com/2021/08/27/western_digital_components/

    Tells the tale of WD Blue SN550 having downgraded components and poorer
    performance without any warning to purchasers.

    https://www.amazon.co.uk/WD-Blue-SN550-High-Performance-Pcie/dp/
    B07YFFX5MD/

    Amazon's choice.

    Now pondering if this is still OK for my older specification MoBo (see
    sig).

    Having read the MoBo spec it claims up to 8Gb/sec.
    "PCIe Gen2 x4 22110 M.2 Connector with up to 20Gb/s Data Transfer (PCIe
    NVMe & SATA SSD support)"
    I assume that this equates to 1 GB/sec (ignoring any protocol overheads
    - I used to size data connections as 10 bit to allow for "stuff").
    So a read speed of 2400 MB (2.4 GB) a second from the SSD looks not to
    be a limit.

    I am however now confused, because it says

    "Data Transfer Rate 8 Gb per second"
    (Or 1 GB/s)

    "Read Speed 2400 MB per second"
    (Or 2.4 GB/sec)

    So am I correct in assuming that the write speed is 1GB/sec and read
    speed is 2.4GB/sec?

    They are all bastards for using mixed units, of course.

    Gah!
    Having a bad day.
    20 Gb/sec is between 2 GB/s and 2.5 GB/s.
    So the read speed matches the MoBo but the write speed does not.
    I am assuming that read speed is more important, and usually faster than
    write speed anyway.

    Perhaps defer any but decision until I can read my posts back without
    getting confused. :-(

    Cheers


    Dave R



    --
    AMD FX-6300 in GA-990X-Gaming SLI-CF running Windows 7 Pro x64

    --
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  • From Jeff Gaines@21:1/5 to David on Sat Aug 28 15:08:17 2021
    On 28/08/2021 in message <[email protected]> David wrote:

    Perhaps defer any but decision until I can read my posts back without
    getting confused. :-(

    For info I've posted benchmarks on DropBox:

    https://www.dropbox.com/sh/9m0gfb2dk3wq96q/AAAq4ZBu54g2gq8BVoWTg7Qma?dl=0

    NVMe-BM.png has my Samsung C drive side by side with the WD, there is
    quite a difference but then the prices are quite different too!

    If anybody wants to look at HP-Screen.jpg and tell me what is causing the stripes on my monitor I'd be delighted :-)

    --
    Jeff Gaines Wiltshire UK
    Those are my principles – and if you don’t like them, well, I have
    others.
    (Groucho Marx)

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