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  1. #1
    New ROGer Array Pilossof PC Specs
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    Slow SSD on Crosshair Viii Hero

    Seeking the community help on this issue. For some reason my Samsung 860 PRO 256GB is very slow and I was unable to find the reason why. Sequential read 251MB/s, Sequential write 155MB/s.
    Any ideas?

  2. #2
    ROG Guru: Brown Belt Array MeanMachine PC Specs
    MeanMachine PC Specs
    Laptop (Model)I enjoy my wife
    MotherboardCVI HERO + CVII Hero Wifi
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    Quote Originally Posted by Pilossof View Post
    Seeking the community help on this issue. For some reason my Samsung 860 PRO 256GB is very slow and I was unable to find the reason why. Sequential read 251MB/s, Sequential write 155MB/s.
    Any ideas?
    There are a number of causes that will slow an SSD down.

    Obtain the latest Samsung Magician and ensure SATA drivers are up to date.
    Keep the drives capacity under 75%.
    Try disabling Rapid mode and check the differance.
    Ensure TRIM is enabled.
    Use your Magician tool to optimise and run Performance Optimization.
    Last edited by MeanMachine; 09-27-2020 at 04:20 AM.
    We owe our existence to the scum of the earth, Cyanobacteria

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    AMD R7 2700X Cooler: Corsair Hydro H115i Case: Corsair Carbide 780t

    Memory:G.Skill TridentZ F4-3200C14D-16GTZR SSD:Samsung 500GB 960 EVO M.2



  3. #3
    New ROGer Array Pilossof PC Specs
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    Thank you MeanMachine. For some reason the Magician says that the drive cannot be optimized: "The selected drive does not support this feature"
    The latest Magician 6.02 crashes after the last Windows update, so I am running 6.0. I have two Samsung SATA SSDs and one Samsung NVMe, and all behave the same way. The Magician can read the capacity, used space, S#, and FW, and that is all. I suspect the reason is somewhere deeper in the MoBo settings or in the drivers.

  4. #4
    ROG Guru: Brown Belt Array MeanMachine PC Specs
    MeanMachine PC Specs
    Laptop (Model)I enjoy my wife
    MotherboardCVI HERO + CVII Hero Wifi
    ProcessorRyzen 7 1800X + 2700X
    Memory (part number)CMD16GX4M2B3000C15 + F4-3200C14D-16GTZR
    Graphics Card #1EVGA GTX980 SC for CVFZ
    Graphics Card #2EVGA GTX 1080 hybrid
    Graphics Card #3GTX 770 for phys x
    Sound CardMB
    MonitorHP w2408h
    Storage #1Samsung 970 EVO 500GB M.2
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    Quote Originally Posted by Pilossof View Post
    Thank you MeanMachine. For some reason the Magician says that the drive cannot be optimized: "The selected drive does not support this feature"
    The latest Magician 6.02 crashes after the last Windows update, so I am running 6.0. I have two Samsung SATA SSDs and one Samsung NVMe, and all behave the same way. The Magician can read the capacity, used space, S#, and FW, and that is all. I suspect the reason is somewhere deeper in the MoBo settings or in the drivers.
    Is your drives firmware up to date.?
    Do you have the Trim command enabled in Windows.?
    Last edited by MeanMachine; 09-27-2020 at 09:37 AM.
    We owe our existence to the scum of the earth, Cyanobacteria

    My System Specs:

    MB:ASUS ROG Crosshair VII Hero/WiFi GPU:EVGA GTX 1080 sc PSU:Corsair AX-1200i
    CPU:
    AMD R7 2700X Cooler: Corsair Hydro H115i Case: Corsair Carbide 780t

    Memory:G.Skill TridentZ F4-3200C14D-16GTZR SSD:Samsung 500GB 960 EVO M.2



  5. #5
    New ROGer Array Pilossof PC Specs
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    FW is probably up to date, at least Magician does prompt to update it. TRIM is enabled.

  6. #6
    ROG Enthusiast Array extreme's Avatar
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    check which port is connected? also enable write cache in device manager

  7. #7
    New ROGer Array Pilossof PC Specs
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    Thank you extreme
    All this was done before. Ports are 1 and 2 and I also tried different cables.
    Last edited by Pilossof; 09-28-2020 at 05:12 AM.

  8. #8
    ROG Guru: Blue Belt Array RedSector73 PC Specs
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    Why are using SSD not a NVMe drive ?

    Anyway get the latest chipset drivers from AMD.
    https://www.amd.com/en/support/chips...ocket-am4/x570

    TRIM is enabled in Windows 10, you don't need to do anything for it to just work.

    I think you will find the Samsung 860 Pro 256 GB performs inconsistently under varying real world conditions. A Kingston A2000 NVMe would perform better and cheap as or can go NVMe Samsung 970 or 980 or Hynix Gold or Adata SX8200PNP which all perform significantly better in the real world.

    Here is the procedure for install of windows on NVMe drive (when you get around to getting one).

    1 - Make sure you unplug all SATA and USB drives, the M.2 drive has to be the only drive installed.
    2 - Go into the bios, under the boot tab there is an option for CSM, make sure it is disabled.
    3 - Click on secure boot option below and make sure it is set to other OS, Not windows UEFI.
    4 - Click on key management and clear secure boot keys.
    5 - Insert a USB memory stick with a UEFI bootable ISO of Windows 10 on it.
    6 - Press F10 to save, exit and reboot.
    7 - Windows will now start installing to your NVME drive as it has its own NVME driver built in.
    8 - When the PC reboots hit F2 to go back into the BIOS, you will see under boot priority that Windows boot manager now lists your NVME drive.
    9 - Click on secure boot again but now set it to Windows UEFI mode.
    10 - Click on key management and install default secure boot keys
    11 - Press F10 to save and exit and Windows will finish the installation.
    Last edited by RedSector73; 09-28-2020 at 05:57 AM.

  9. #9
    New ROGer Array Pilossof PC Specs
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    Thanks for the instructions RedSector73. They will be very helpful one day when I will have to reinstall Windows. I there was a way to apply a disk image to NVMe I would go with this option rightaway, but I have red this is problematic. I do have NVMe drive installed, but I use only in the process of image and video editting. I simply cannot afford at this moment spending time to reinstall all applications and finetune them. Cheers!

  10. #10
    ROG Enthusiast Array extreme's Avatar
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    test it with another available pc on intel sata3 port see what it gives ...

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