SwiftGo14 sfg14-63-Why is my SSD only reaching 3500Mb/s, Is PCIe 4.0 x4 has a limitation?

James_P
James_P Member Posts: 4 New User
edited 10:34AM in Swift and Spin Series

Hello!

I would like to ask about SSD speeds in this model - I've bought SSD with speeds 7500Mb/s but mine reaches something around 3500Mb/s. I've checked info in Crystal Disk and it says pcie 4.0 x4 which explains those speeds. Is x4 in pcie Acer limit? What are Your speeds/settings?

[Edited the thread to add model name and issue detail to the title]

Answers

  • RenanVilela
    RenanVilela ACE Posts: 15,362 Trailblazer
    https://community.acer.com/en/discussion/715796/why-is-my-ssd-only-reaching-3500mb-s-on-my-acer-swift-go-14-sfg14-63-is-pcie-4-0-x4-a-limitation

    Hi, good morning.
    What is the full model of the SSD you bought?

    Acer Predator Helios 300 Core i7 9750H
    Sodimm DDR4 2666MHz 16 GB Sk Hynx
    Sodimm DDR4 2666MHz 16GB Crucial
    SSD 512GB Sandisk Plus
    SSD M2 Nvme 512GB XPG GAMMIX S11 Lite
    SSD M2 Sata3 128GB WD
    ________________________________________________________________________________________________________________
    -->>  Dicas para amenizar a temperatura durante Jogos — Acer Community  <<--
    ________________________________________________________________________________________________________________

    Se a minha resposta te ajudou, curta o comentário e fortaleça com o Sim se possível!!

  • James_P
    James_P Member Posts: 4 New User

    It is Fanxiang s790 2TB. I know it might sound exotic but there are reviews or screens showing it easily reaches twice the speed I get.

    Besides my main ssd drive (whis is most likely hynix pc801) shows pcie x4 and is limited to 3500Mb/s seq as well.

  • Axxo
    Axxo Member, Ally Posts: 800

    Ty to check the temperature of the SSD with crystal disk info. Also, you can try to do a power reset by unplugging the power cable and holding the power button for 10 secs.

  • James_P
    James_P Member Posts: 4 New User

    Temperatures are fine - main drive around 35 degree Celcius and secondary 40-45. Hard reset doesn't not change anything.

    Now I see that I made a mistake in my main post - pcie 4.0 x4 is fine. What I had in mind was, that my drives have speed limits like pcie 3.0 - around 3500 Mb/s

  • eGomes
    eGomes Member Posts: 4,204 Guru
    edited November 16

    Hi,

    SSD read and write speeds (benchmark tests) can be affected by Active State Power Management (ASPM) policy.

    Try "temporarily" disabling the Link State Power Management option in the PCIe power settings + set Power mode = Best performance in Power & battery settings:

    https://www.technewstoday.com/link-state-power-management/

    https://www.windowscentral.com/how-change-power-modes-performance-or-battery-windows-11

    It is important to remember that it isn't recommended to keep this option disabled for a long time. Because the estimated duration in hours (autonomy) of your laptop battery may be affected (reduced).

  • billsey
    billsey ACE Posts: 34,138 Trailblazer

    AMD never released specs for their SSD speeds. Although they are PCIe 4.0 x4 it's possible they don't actually meet the performance standard expected on those with the mobile versions. Have you seen other Hawk Point laptops that are achieving the full bandwidth? Theoretical should be 8GB/s, actual should be 10-20% lower due to things like file system overhead…

    Click on "Like" if you find my answer useful or click on "Yes" if it answers your question.
  • James_P
    James_P Member Posts: 4 New User

    I've tried disabling Link State Power Management and setting best performance. Speeds stays the same.

    @billsey Good point, but I found a review of exact Acer model SFG14-63-19Q which has exact SSD drive (main one) and there are screens showing read speeds reaching 5000MB/s. Mine barely reach 3500 MB/s for this drive. The review is here:

    https://root-nation.com/en/gadgets-en/laptops-en/en-acer-swift-go-14-2024-review/

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