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  1. #1
    ROG Member Array AntonS PC Specs
    AntonS PC Specs
    MotherboardAsus MAXIMUS X FORMULA
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    AntonS's Avatar
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    Unhappy M.2_1 slow speed

    Hello,
    I have 2 M.2 SSD's in Asus MAXIMUS X FORMULA
    Samsung 960 PRO in M.2_1 and Samsung 970 EVO Plus in M.2_2

    Additional PCIe equipment is Creative Sound BlasterX AE-5 in PCIe х1_3 and 1080Ti in PCIe x16_1

    All equipment located on different root ports
    Click image for larger version. 

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    SSD speed in M.2_2 is good
    Click image for larger version. 

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    SSD speed in M.2_1 is way bad
    Click image for larger version. 

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    Bios is latest (2203)
    SATA Controller completely disabled in BIOS - no SATA devices
    M.2_1 Configuration: [PCIE mode]
    M.2_2 PCIe Bandwidth Configuration: [X4]

    I even set PCIe 3.0 x4_3 slot to x2...

    Any thoughts please?

    There was idea to set 960PRO to M.2_2 but I have water cooling with copper pipes. To open M.2_1 slot I need to remove GPU and drain the water.
    I want to change 960PRO 512Gb to 970PRO 1Tb, but before I need to eliminate thoughts that M.2_1 port is working slow or broken.

  2. #2
    ROG Guru: Yellow Belt Array Carlyle2020 PC Specs
    Carlyle2020 PC Specs
    Laptop (Model)amd4000 for sure next time
    MotherboardAsus Maximus XI APEX
    Processorgaming9900ks/@5.2 avx -1 / manual vcore 1.32/LLC5/AC+dc 0.01/TVB off/all power savings on
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    Isn't that exactly the difference between "PRO" and "EVO" variant?

    Another member recently (last 2 months) did make a post about your problem:

    He mentiones software that does read out the pcie multiplicator. Like if it is running at x2 or x4.

    "Maximus XI Apex and Dimm.2 M.2 SSD speed limit clarification"

    Rgds Carlyle

  3. #3
    ROG Guru: Yellow Belt Array Ch3vr0n PC Specs
    Ch3vr0n PC Specs
    MotherboardAsus Maximus XI Formula
    ProcessorCore i9 9900k @ 4.7GHZ (XMP)
    Memory (part number)CMT32GX4M4Z3200C16
    Graphics Card #1Asus Strix GTX 1080 A8G
    Sound Cardon board
    MonitorASUS VG278HR & ASUS VK278Q
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    Ch3vr0n's Avatar
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    It's not. My M 11F is using BOTH M.2 slots, all big pci-e slots and all 6 sata ports and both of my nvme's hit 3000+ Somethings "off" here. Speed of the EVO's are slower than Pro yes, but not by half. I'd expect to see something between 2900-just over 3000. difficult to say, but sounds like shared PCI-E lanes, but nothing in the manual sais that. Sata port 6 i believe it was would be lost if M.2_2 was running in x4 mode but that's irrelevant here. He's not using sata ports.

    The speeds listed in image 2 are a classic sign of it running in x2 mode and not x4. That drive (ive had it myself) should be hitting 33-3500 in x4 mode. Hell i popped it into a pluggable usb C enclosure and when connected to a usb 3.1 gen 2 i hit 1000+. There's some kind of limiting going on here.

    I can't think of any reason atm why this should be happening.

    What speed is "samsung magician" reporting on both drives?

  4. #4
    ROG Member Array AntonS PC Specs
    AntonS PC Specs
    MotherboardAsus MAXIMUS X FORMULA
    ProcessorIntel Core i7-8700K
    Memory (part number)G.Skill Trident Z RGB 32GB DDR4 32GTZR Kit 3866 CL18 (4x8GB)
    Graphics Card #1AORUS GTX 1080 Ti Xtreme Edition
    Sound CardCreative Sound BlasterX AE-5
    MonitorASUS PG279Q
    Storage #1512Gb SSD Samsung 960 PRO
    Storage #21Tb SSD Samsung 970 EVO Plus
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    AntonS's Avatar
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    EVO 970 Plus is slightly faster than 960 PRO (faster write speed), but anyway 960 PRO should show something around 3500/2100
    Well for write - the speed is real. For read - no.
    M.2_1 960 PRO running x4, because PCIe 3.0 sppeds are: x2=1.97 GB/s, x4=3.94 GB/s. (theoretically, and bit lower in actual bandwidth).
    You can see that 960 PRO in M.2_1 show up to 2.1 GB/s. And in HWinfo and samsung magician show that both M.2 running x4

    I even done a clear test - booted from USB flash (Windows PE) and run test for 960 PRO - same result )
    Click image for larger version. 

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    Samsung magician test show 3100/1900, but I don't trust this test as I don't know what's behind it (I mean testing procedure).
    I use AS SSD Benchmark and CrystalDiskMark

  5. #5
    ROG Guru: Orange Belt Array
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    Check that you are running that slot at Gen 3 in BIOS, and that slot isnt set for SATA or anything weird. page 3-18 of your manual should be set to PCIE only, not SATA or manual. On 3-17 check your system agent that its set to PCIE Gen3.

    That drive is a little slower but not by that much.

    Seting anything to X2 and it most likely wont work and if it is it will be at half speed.
    Last edited by BigJohnny; 01-03-2020 at 05:08 AM.

  6. #6
    ROG Member Array AntonS PC Specs
    AntonS PC Specs
    MotherboardAsus MAXIMUS X FORMULA
    ProcessorIntel Core i7-8700K
    Memory (part number)G.Skill Trident Z RGB 32GB DDR4 32GTZR Kit 3866 CL18 (4x8GB)
    Graphics Card #1AORUS GTX 1080 Ti Xtreme Edition
    Sound CardCreative Sound BlasterX AE-5
    MonitorASUS PG279Q
    Storage #1512Gb SSD Samsung 960 PRO
    Storage #21Tb SSD Samsung 970 EVO Plus
    CPU CoolerCuplex kryos NEXT VARIO with VISION
    CaseLian Li PC-O11WXC
    Power SupplyEnermax MaxTytan 800W
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    Quote Originally Posted by BigJohnny View Post
    That drive is a little slower but not by that much.
    Hello,
    As I mentioned in initial post
    SATA Controller completely disabled in BIOS - no SATA devices
    M.2_1 Configuration: [PCIE mode]
    M.2_2 PCIe Bandwidth Configuration: [X4]

    M.2 SSDs are working at PCIe 3.0 x4 (CrystalDiskInfo and HWMonitor)

  7. #7
    ROG Guru: Yellow Belt Array Ch3vr0n PC Specs
    Ch3vr0n PC Specs
    MotherboardAsus Maximus XI Formula
    ProcessorCore i9 9900k @ 4.7GHZ (XMP)
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    Graphics Card #1Asus Strix GTX 1080 A8G
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    MonitorASUS VG278HR & ASUS VK278Q
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    Ch3vr0n's Avatar
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    I use crystalDisk mark too as a more accurate. by "Speed" in Samsung Magician i was more referring to the PCIE multiplier listed.

    Open samsung magician, go to "drive details" on the left and then select the proper drive at the top. When you've done that, look on the right at "Interface". If it's operating at full speed it should say "PCIe Gen. 3 x 4"

    NVME Driver should say "Samsung"

    anything other than that and it's not running at peak performance

    Oh and i know it's faster than a 960 Pro, cause i did exactly what you did. Swap out my old 512GB 960 Pro, for a 1TB 970 EVO plus (that and it was running low on space). There's definitely something off here. My 512GB 960 pro at x4 was hitting just over 3000 on the reads and just under 2000 on the writes. So your write speeds are within normal limits, your read speads are not.

    You have to keep in mind the bigger the drive the faster it will perform. a 1TB 960 Pro will be faster than the 512GB one, and a 2TB one will be faster than a 1TB one.

  8. #8
    ROG Member Array AntonS PC Specs
    AntonS PC Specs
    MotherboardAsus MAXIMUS X FORMULA
    ProcessorIntel Core i7-8700K
    Memory (part number)G.Skill Trident Z RGB 32GB DDR4 32GTZR Kit 3866 CL18 (4x8GB)
    Graphics Card #1AORUS GTX 1080 Ti Xtreme Edition
    Sound CardCreative Sound BlasterX AE-5
    MonitorASUS PG279Q
    Storage #1512Gb SSD Samsung 960 PRO
    Storage #21Tb SSD Samsung 970 EVO Plus
    CPU CoolerCuplex kryos NEXT VARIO with VISION
    CaseLian Li PC-O11WXC
    Power SupplyEnermax MaxTytan 800W
    Keyboard SteelSeries Apex M750
    Mouse SteelSeries Rival 650 Wireless
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    Headset/Speakers Fostex 0.5d
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    AntonS's Avatar
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    Solved!

    I've checked CrystalDiskMark reports and noticed that with 4K operations 960pro 512Gb slightly faster than 970 EVO plus 1Tb.
    Speed lost only with linear operations, this means that reason with LBA -> PBA translations and could be fixed with Secure Erase

    Here is a medicine:
    1. Create disk image (with Acronis Disk Director for example) from boot USB (Windows PE)
    2. Secure erase SSD (I've created boot usb from Samsung Magician) *there is Secure Erase in BIOS but I forgot about it )
    3. Restore disk image

    Click image for larger version. 

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  9. #9
    ROG Guru: Yellow Belt Array Ch3vr0n PC Specs
    Ch3vr0n PC Specs
    MotherboardAsus Maximus XI Formula
    ProcessorCore i9 9900k @ 4.7GHZ (XMP)
    Memory (part number)CMT32GX4M4Z3200C16
    Graphics Card #1Asus Strix GTX 1080 A8G
    Sound Cardon board
    MonitorASUS VG278HR & ASUS VK278Q
    Storage #1Samsung 970 Evo 1TB (Boot) & 970 EVO 2TB (Scratch)
    Storage #23X HGST 10TB, 1x HGST 4TB
    CPU CoolerScythe Mugen 5 PCGH
    CaseCooler Master Cosmos II
    Power SupplyCorsair AX860i
    Keyboard Corsair k95 RGB Platinum
    Mouse Corsair M65Pro RGB
    Headset Corsair Voide Wireless SE
    Mouse Pad Corsair MM300 + Corsair MM800 Polaris (EU)
    Headset/Speakers Logitech Z-906
    OS Windows 10 Pro x64
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    Accessory #1 Xbox One Elite Wireless Controller
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    Ch3vr0n's Avatar
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    So it was a drive problem and not a bios setting. Should be pretty easy to "solve" then if it were to happen with the new drive. But shouldn't. For your info, i ran a benchmark on my 1TB 970 evo plus (that replaced my 960 Pro 512GB). If you plan on getting the Pro version of it, your numbers should be slightly higher than these.
    Miniatura de Adjuntos Miniatura de Adjuntos 970evoplus1TB.png  


  10. #10
    ROG Member Array AntonS PC Specs
    AntonS PC Specs
    MotherboardAsus MAXIMUS X FORMULA
    ProcessorIntel Core i7-8700K
    Memory (part number)G.Skill Trident Z RGB 32GB DDR4 32GTZR Kit 3866 CL18 (4x8GB)
    Graphics Card #1AORUS GTX 1080 Ti Xtreme Edition
    Sound CardCreative Sound BlasterX AE-5
    MonitorASUS PG279Q
    Storage #1512Gb SSD Samsung 960 PRO
    Storage #21Tb SSD Samsung 970 EVO Plus
    CPU CoolerCuplex kryos NEXT VARIO with VISION
    CaseLian Li PC-O11WXC
    Power SupplyEnermax MaxTytan 800W
    Keyboard SteelSeries Apex M750
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    AntonS's Avatar
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    Issue itself was that drive was used, that's why solution is to erase it.
    For sure new 970 PRO controller faster than 960 PRO, and 1Tb will be even more faster than 512Gb itself.
    Anyway I will continue to use 960 PRO for system (faster random small size write) and use 970EVO Plus for work (faster sequential read/write).

    Thank you for support anyway and this solution will nice to have here in forum.
    Could be useful for those who use ssd from previous build or bought used.

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