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  1. #1
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    3900x under performance

    Upgraded my builds mobo and process to the ryzen 9 3900x + crosshair viii hero
    Did a benchmark test and my ryzen is extremely under performing , see here: https://www.userbenchmark.com/UserRun/20826813
    100 PCs with exactly the same components, 64 performed better.

    I put it in performance mode in au suite, temps were not going over 45, idle 35, average 40

    any insight?
    Ryzen 7 1800X 3.6GHz 8-Core --->Upgraded---> Ryzen 9 3900X 3.8 GHz 12-Core
    Crosshair VI EXTREME EATX AM4
    ----Upgraded---> Crosshair VIII Hero (WI-FI) ATX
    H1150i PRO RGB
    ROG GeForce GTX 1080 Ti DirectX 12 STRIX
    SanDisk - X400 512GB M.2-2280 SSD
    ----Upgraded---> AORUS NVMe Gen4 SSD 1TB M.2 2280 x2 RAID0
    Western Digital Black 4 TB 3.5" 7200RPM
    Crystal 570X RGB ATX Mid Tower Case
    Corsair Dominator DDR4 3200 C16 4x8GB
    x2 Asus - PG279Q ROG Swift 27.0" 2560x1440 165Hz Monitor

  2. #2
    New ROGer Array RedSector73 PC Specs
    RedSector73 PC Specs
    MotherboardROG CROSSHAIR VIII HERO (WI-FI)
    ProcessorAMD Ryzen 9 3900X 12-Core Processor
    Memory (part number)PVR416G413C9K @ 3600 14-15-14-28 CR1
    Graphics Card #1Gigabyte Aorus RTX 2080 Ti Xtreme WaterForce (GV-N208TAORUSX W-11GC)
    MonitorAsus ROG Swift PG348Q
    Storage #1ADATA SX8200PNP 1TB
    Storage #22 x Samsung SSD 840 EVO 250GB
    CPU CoolerCoolermaster Liquid Pro Master 360
    CaseEVGA DG-87 Gunmetal Grey Gaming Case
    Power SupplyEVGA SuperNOVA G2 750W Gold Power
    Keyboard Corsair K95 RGB Platinum
    Mouse Corsair Gaming Sabre RGB Gaming Mouse
    Headset ARCTIS Pro Wireless
    Mouse Pad Cooler Master MP750 RGB Cloth Gaming Mouse Pad Extra Large
    OS Windows 10 64bit Pro
    Network RouterRT-AC87U

    Join Date
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    Look like your running default speed (Your running your 32GB DIMM DDR4 clocked @ 2133 MHz) - this will be likely source of issue. You need to use the DOCP profile for your RAM which I hope is somewhere between DDR4 3200 to 3600 which is best place to be for Ryzen 3 series.

    Then re-test, post and see whats happening.
    Last edited by RedSector73; 10-11-2019 at 12:15 AM.

  3. #3
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    Quote Originally Posted by RedSector73 View Post
    Look like your running default speed (Your running your 32GB DIMM DDR4 clocked @ 2133 MHz) - this will be likely source of issue. You need to use the DOCP profile for your RAM which I hope is somewhere between DDR4 3200 to 3600 which is best place to be for Ryzen 3 series.

    Then re-test, post and see whats happening.
    Actually got worse :/ https://www.userbenchmark.com/UserRun/20828768 - 46.1% Above Average vs previous 54.2% Above average
    Ryzen 7 1800X 3.6GHz 8-Core --->Upgraded---> Ryzen 9 3900X 3.8 GHz 12-Core
    Crosshair VI EXTREME EATX AM4
    ----Upgraded---> Crosshair VIII Hero (WI-FI) ATX
    H1150i PRO RGB
    ROG GeForce GTX 1080 Ti DirectX 12 STRIX
    SanDisk - X400 512GB M.2-2280 SSD
    ----Upgraded---> AORUS NVMe Gen4 SSD 1TB M.2 2280 x2 RAID0
    Western Digital Black 4 TB 3.5" 7200RPM
    Crystal 570X RGB ATX Mid Tower Case
    Corsair Dominator DDR4 3200 C16 4x8GB
    x2 Asus - PG279Q ROG Swift 27.0" 2560x1440 165Hz Monitor

  4. #4
    New ROGer Array RedSector73 PC Specs
    RedSector73 PC Specs
    MotherboardROG CROSSHAIR VIII HERO (WI-FI)
    ProcessorAMD Ryzen 9 3900X 12-Core Processor
    Memory (part number)PVR416G413C9K @ 3600 14-15-14-28 CR1
    Graphics Card #1Gigabyte Aorus RTX 2080 Ti Xtreme WaterForce (GV-N208TAORUSX W-11GC)
    MonitorAsus ROG Swift PG348Q
    Storage #1ADATA SX8200PNP 1TB
    Storage #22 x Samsung SSD 840 EVO 250GB
    CPU CoolerCoolermaster Liquid Pro Master 360
    CaseEVGA DG-87 Gunmetal Grey Gaming Case
    Power SupplyEVGA SuperNOVA G2 750W Gold Power
    Keyboard Corsair K95 RGB Platinum
    Mouse Corsair Gaming Sabre RGB Gaming Mouse
    Headset ARCTIS Pro Wireless
    Mouse Pad Cooler Master MP750 RGB Cloth Gaming Mouse Pad Extra Large
    OS Windows 10 64bit Pro
    Network RouterRT-AC87U

    Join Date
    Apr 2018
    Reputation
    40
    Posts
    116

    What are you doing in regards to cpu in the setup and are you using the latest bios 1001 ?

    I see an improvement but CPU is down-clocking massively and need to work out why.
    Last edited by RedSector73; 10-11-2019 at 02:07 AM.

  5. #5
    ROG Member Array
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    Yes i am using latest bios with all drivers updated from asus/amd
    What exact settings would you want to see, see here from ai suite: https://www.screencast.com/t/w90kNxWw1uvO , https://www.screencast.com/t/GUGU8ojmJF

    also not sure if this has anything to do with it, but i only connected the 8pin EATX12v_1 and not the 4pin EATX12v_2 ( my Corsair HX750i didnt come with a 4pin wire, unless i didnt look properly)
    Ryzen 7 1800X 3.6GHz 8-Core --->Upgraded---> Ryzen 9 3900X 3.8 GHz 12-Core
    Crosshair VI EXTREME EATX AM4
    ----Upgraded---> Crosshair VIII Hero (WI-FI) ATX
    H1150i PRO RGB
    ROG GeForce GTX 1080 Ti DirectX 12 STRIX
    SanDisk - X400 512GB M.2-2280 SSD
    ----Upgraded---> AORUS NVMe Gen4 SSD 1TB M.2 2280 x2 RAID0
    Western Digital Black 4 TB 3.5" 7200RPM
    Crystal 570X RGB ATX Mid Tower Case
    Corsair Dominator DDR4 3200 C16 4x8GB
    x2 Asus - PG279Q ROG Swift 27.0" 2560x1440 165Hz Monitor

  6. #6
    New ROGer Array RedSector73 PC Specs
    RedSector73 PC Specs
    MotherboardROG CROSSHAIR VIII HERO (WI-FI)
    ProcessorAMD Ryzen 9 3900X 12-Core Processor
    Memory (part number)PVR416G413C9K @ 3600 14-15-14-28 CR1
    Graphics Card #1Gigabyte Aorus RTX 2080 Ti Xtreme WaterForce (GV-N208TAORUSX W-11GC)
    MonitorAsus ROG Swift PG348Q
    Storage #1ADATA SX8200PNP 1TB
    Storage #22 x Samsung SSD 840 EVO 250GB
    CPU CoolerCoolermaster Liquid Pro Master 360
    CaseEVGA DG-87 Gunmetal Grey Gaming Case
    Power SupplyEVGA SuperNOVA G2 750W Gold Power
    Keyboard Corsair K95 RGB Platinum
    Mouse Corsair Gaming Sabre RGB Gaming Mouse
    Headset ARCTIS Pro Wireless
    Mouse Pad Cooler Master MP750 RGB Cloth Gaming Mouse Pad Extra Large
    OS Windows 10 64bit Pro
    Network RouterRT-AC87U

    Join Date
    Apr 2018
    Reputation
    40
    Posts
    116

    It appears to have them
    https://www.anandtech.com/show/8835/...-supply-review

    specifically, bottom left first two cables, 2 marked CPU - they look like 8's but one might be 4+4 or they both might be.
    https://images.anandtech.com/doci/8835/HX750i_03.JPG
    Last edited by RedSector73; 10-15-2019 at 07:52 AM.

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