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  1. #1
    New ROGer Array St4v0 PC Specs
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    MotherboardAsus X399 ROG Zenith Extreme
    ProcessorAMD Ryzen Threadripper 1950X @ 4Ghz
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    MonitorDell UP3216Q 4K
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    Samsung 960 pro M.2 + DiMM.2

    I seem to be having a bad time with speeds maxing at 1700 read and write and when i checked Samsung magician it showed PCIe Gen 3 x 2.
    According the manual the DiMM.2 card shares bandwidth with the U.2 port next to the sata's.
    I've checked bios a number of times and cant find anywhere to disable U.2 to give the DiMM.2 card full bandwidth.
    Any help please would be much appreciated.

  2. #2
    New ROGer Array capitaltpt PC Specs
    capitaltpt PC Specs
    MotherboardASUS Zenith Extreme
    ProcessorAMD Ryzen Threadripper 1920X
    Memory (part number)2 x G.skill RGB F4-4266C19D-16GTZR
    Graphics Card #1EVGA 1080ti SC Gaming Black Edition
    Sound CardSchiit Modi 2, Schiit Magni 2 Uber
    Monitor3 x Dell U2412M
    Storage #1Samsung 960 Pro
    Storage #26TB Seagate Enterprise HDD
    CPU CoolerXSPC NEO TR4
    CaseLian Li V3000
    Power SupplyEVGA SuperNova 1600W P2
    Keyboard G.Skill KM780 RGB
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    Quote Originally Posted by St4v0 View Post
    I seem to be having a bad time with speeds maxing at 1700 read and write and when i checked Samsung magician it showed PCIe Gen 3 x 2.
    According the manual the DiMM.2 card shares bandwidth with the U.2 port next to the sata's.
    I've checked bios a number of times and cant find anywhere to disable U.2 to give the DiMM.2 card full bandwidth.
    Any help please would be much appreciated.
    The manual is actually a little confusing because it calls the onboard AND DIMM2 M.2 sockets M.2_1, however I believe only the onboard one (under the heatsink) shares bandwidth with the U.2. Regardless, the BIOS location is on page 13-6 of the manual. In the BIOS it's under "Onboard Devices Configuration"

    PCIEX8/X4_4 Bandwidth

    [X8 mode]
    The PCIEX8/X4_4 slot will run at X8 mode for high performance with the
    U.2 disabled.
    [X4 mode]
    The PCIEX8/X4_4 slot will run at X4 mode with the U.2 enabled.

  3. #3
    New ROGer Array St4v0 PC Specs
    St4v0 PC Specs
    MotherboardAsus X399 ROG Zenith Extreme
    ProcessorAMD Ryzen Threadripper 1950X @ 4Ghz
    Memory (part number)G.Skill Trident Z 32GB (4x8GB) DDR4 PC4-3200C18 4000MHz
    Graphics Card #1NVIDIA TITAN X Pascal
    Sound CardAsus Xonar Essence STX II
    MonitorDell UP3216Q 4K
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    thanks for the reply.
    I tried altering the PCIEX8/X4_4 Bandwidth and set it to 8x.
    However upon restarting it will always reverts it back to 4x.
    very annoying and i just cant understand why so far.
    and their doesn't seem to be the option to disable U.2 manually.
    Last edited by St4v0; 10-24-2017 at 06:00 AM.

  4. #4
    New ROGer Array capitaltpt PC Specs
    capitaltpt PC Specs
    MotherboardASUS Zenith Extreme
    ProcessorAMD Ryzen Threadripper 1920X
    Memory (part number)2 x G.skill RGB F4-4266C19D-16GTZR
    Graphics Card #1EVGA 1080ti SC Gaming Black Edition
    Sound CardSchiit Modi 2, Schiit Magni 2 Uber
    Monitor3 x Dell U2412M
    Storage #1Samsung 960 Pro
    Storage #26TB Seagate Enterprise HDD
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    Quote Originally Posted by St4v0 View Post
    thanks for the reply.
    I tried altering the PCIEX8/X4_4 Bandwidth and set it to 8x.
    However upon restarting it will always reverts it back to 4x.
    very annoying and i just cant understand why so far.
    and their doesn't seem to be the option to disable U.2 manually.
    That's odd because U.2 should be disabled by default. Which BIOS are you running? Have you tried clearing CMOS?

  5. #5
    New ROGer Array St4v0 PC Specs
    St4v0 PC Specs
    MotherboardAsus X399 ROG Zenith Extreme
    ProcessorAMD Ryzen Threadripper 1950X @ 4Ghz
    Memory (part number)G.Skill Trident Z 32GB (4x8GB) DDR4 PC4-3200C18 4000MHz
    Graphics Card #1NVIDIA TITAN X Pascal
    Sound CardAsus Xonar Essence STX II
    MonitorDell UP3216Q 4K
    Storage #1960 PRO 1TB M.2 2280 PCI-E 3.0 X4 NVME
    Storage #2960 PRO 1TB M.2 2280 PCI-E 3.0 X4 NVME
    CPU CoolerEK Watercooled x2/480 Rads
    CaseObsidian 900D Super Tower Case
    Power SupplyCorsair AX1500i Digital ATX 80 Plus Titanium
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    I'm on the latest 801 bios.
    I've tried resetting bios via the reset button on the back.
    And I've tried resetting it from within bios and doing an F5 to defaults.
    So far nothing,still the same outcome

  6. #6
    New ROGer Array St4v0 PC Specs
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    MotherboardAsus X399 ROG Zenith Extreme
    ProcessorAMD Ryzen Threadripper 1950X @ 4Ghz
    Memory (part number)G.Skill Trident Z 32GB (4x8GB) DDR4 PC4-3200C18 4000MHz
    Graphics Card #1NVIDIA TITAN X Pascal
    Sound CardAsus Xonar Essence STX II
    MonitorDell UP3216Q 4K
    Storage #1960 PRO 1TB M.2 2280 PCI-E 3.0 X4 NVME
    Storage #2960 PRO 1TB M.2 2280 PCI-E 3.0 X4 NVME
    CPU CoolerEK Watercooled x2/480 Rads
    CaseObsidian 900D Super Tower Case
    Power SupplyCorsair AX1500i Digital ATX 80 Plus Titanium
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    Click image for larger version. 

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  7. #7
    New ROGer Array St4v0 PC Specs
    St4v0 PC Specs
    MotherboardAsus X399 ROG Zenith Extreme
    ProcessorAMD Ryzen Threadripper 1950X @ 4Ghz
    Memory (part number)G.Skill Trident Z 32GB (4x8GB) DDR4 PC4-3200C18 4000MHz
    Graphics Card #1NVIDIA TITAN X Pascal
    Sound CardAsus Xonar Essence STX II
    MonitorDell UP3216Q 4K
    Storage #1960 PRO 1TB M.2 2280 PCI-E 3.0 X4 NVME
    Storage #2960 PRO 1TB M.2 2280 PCI-E 3.0 X4 NVME
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    CaseObsidian 900D Super Tower Case
    Power SupplyCorsair AX1500i Digital ATX 80 Plus Titanium
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    capitaltpt ,your 960 pro,how do you have yours connected?
    and what kinda speeds do you get?
    could you show a screenshot like mine for comparison please.

  8. #8
    New ROGer Array St4v0 PC Specs
    St4v0 PC Specs
    MotherboardAsus X399 ROG Zenith Extreme
    ProcessorAMD Ryzen Threadripper 1950X @ 4Ghz
    Memory (part number)G.Skill Trident Z 32GB (4x8GB) DDR4 PC4-3200C18 4000MHz
    Graphics Card #1NVIDIA TITAN X Pascal
    Sound CardAsus Xonar Essence STX II
    MonitorDell UP3216Q 4K
    Storage #1960 PRO 1TB M.2 2280 PCI-E 3.0 X4 NVME
    Storage #2960 PRO 1TB M.2 2280 PCI-E 3.0 X4 NVME
    CPU CoolerEK Watercooled x2/480 Rads
    CaseObsidian 900D Super Tower Case
    Power SupplyCorsair AX1500i Digital ATX 80 Plus Titanium
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    It seems silly that with this high end board you can disable almost everything,usb's sata,s on board sound,network,and the list goes on.
    Why no option to disable the U.2 socket?

  9. #9
    New ROGer Array capitaltpt PC Specs
    capitaltpt PC Specs
    MotherboardASUS Zenith Extreme
    ProcessorAMD Ryzen Threadripper 1920X
    Memory (part number)2 x G.skill RGB F4-4266C19D-16GTZR
    Graphics Card #1EVGA 1080ti SC Gaming Black Edition
    Sound CardSchiit Modi 2, Schiit Magni 2 Uber
    Monitor3 x Dell U2412M
    Storage #1Samsung 960 Pro
    Storage #26TB Seagate Enterprise HDD
    CPU CoolerXSPC NEO TR4
    CaseLian Li V3000
    Power SupplyEVGA SuperNova 1600W P2
    Keyboard G.Skill KM780 RGB
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    Headset Beyerdynamic 880 Pro 600 Ohm
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    Quote Originally Posted by St4v0 View Post
    capitaltpt ,your 960 pro,how do you have yours connected?
    and what kinda speeds do you get?
    could you show a screenshot like mine for comparison please.
    I have mine connected on the board under the heatsink. I'll run some benchmarks when I get home. Have you tried re-downloading and re-flashing the BIOS?

  10. #10
    New ROGer Array St4v0 PC Specs
    St4v0 PC Specs
    MotherboardAsus X399 ROG Zenith Extreme
    ProcessorAMD Ryzen Threadripper 1950X @ 4Ghz
    Memory (part number)G.Skill Trident Z 32GB (4x8GB) DDR4 PC4-3200C18 4000MHz
    Graphics Card #1NVIDIA TITAN X Pascal
    Sound CardAsus Xonar Essence STX II
    MonitorDell UP3216Q 4K
    Storage #1960 PRO 1TB M.2 2280 PCI-E 3.0 X4 NVME
    Storage #2960 PRO 1TB M.2 2280 PCI-E 3.0 X4 NVME
    CPU CoolerEK Watercooled x2/480 Rads
    CaseObsidian 900D Super Tower Case
    Power SupplyCorsair AX1500i Digital ATX 80 Plus Titanium
    Keyboard Corsair Gaming K70
    Mouse Zowie EC1-A
    Headset Sennheiser PC 360
    Mouse Pad Steelseries
    Headset/Speakers Q Acoustics MEDIA 4
    OS Windows 10 pro

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    I can try that but i'm prety sure it will be the same.

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