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Thread: AsRock x79 Extreme9 PCIe 3.0 question




  1. #1
    Onyxtwo is offline Junior Member
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    Unhappy AsRock x79 Extreme9 PCIe 3.0 question

    I recently purchased an AsRock x79 Extreme9 with a 3930k. After running a few benchmarks I noticed my graphics cards were running @ PCIe 2.0. I've checked that the bios is set to Gen3 on the PCIe lanes, reinstalled graphics drivers, etc. I've read a few posts about the registry hack to enable 3.0 on x79 boards, but when I use it, it crashes the hell out of my computer. The system would become unresponsive 2 seconds after loading into windows and restart itself endlessly. Here's my question - I was looking into buying another graphics card to run 3 way SLI (GTX 680). With the PCIe lanes only running in 2.0, wouldn't that bottleneck the cards? The 3rd PCIe lane is wired for 8x @ 2.0 (should be 3.0). Is there another fix for this, or is it an Intel/NVidia issue?

    Current Setup -
    AsRock x79 Extreme9
    Intel 3930k
    Corsair H100i
    Corsair Dominator Platinum 16GB
    EVGA Geforce GTX 680 4GB SLI
    OCZ ZX 1000w PSU

  2. #2
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    Default Re: AsRock x79 Extreme9 PCIe 3.0 question

    #1 - Please, when seeking help, enter the make and model of ALL parts that your system is comprised of in your Signature, or at least the model #'s in your System Specs, then "Save' it.
    ____If you are overclocking, underclocking, or undervolting any parts, informing us of this and their values would prove beneficial in helping you.

    #2 - G.Skill RAM Configurator for your boardSamsung Memory for your boardLatest AMD Chipset Drivers/WindowsLatest AMD Graphics Drivers/WindowsLatest Intel Drivers

    #3 - Please use the eXtreme Outer Vision Power Supply Calculator found HERE to determine if it might be your PSU at issue.
    ____Consider your PSU to be the foundation from which all else is built upon. Anything built upon a weak foundation is poorly built.

  3. #3
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
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    Default Re: AsRock x79 Extreme9 PCIe 3.0 question

    ^^+1^^
    Excellent find!!
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  4. #4
    parsec's Avatar
    parsec is offline Senior Member
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    Default Re: AsRock x79 Extreme9 PCIe 3.0 question

    The so called "support" for PCIe 3.0 on boards like this, without an extra chip to provide PCIe 3.0 support, is like saying the board supports eight core CPUs. Sure, if you have an eight core CPU.

    From the X79 Extreme 9's Overview page:

    PCI-E 3.0 requires both a supporting CPU and motherboard at the same time.
    Currently Intel® Socket 2011 Sandy Bridge-E Processor doesn’t support PCI-E 3.0, but this motherboard is already PCI-E 3.0 hardware ready.
    It depends on Intel® CPU to enable PCI-E 3.0. Please check Intel® website for information on future CPU updates and releases.


    Can someone explain to me how a registry hack can possibly provide PCIe 3.0 support?

    Gawd help Intel if Ivy Bridge-E CPUs are not socket 2011...

  5. #5
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
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    Default Re: AsRock x79 Extreme9 PCIe 3.0 question

    Here's my question - I was looking into buying another graphics card to run 3 way SLI (GTX 680). With the PCIe lanes only running in 2.0, wouldn't that bottleneck the cards? The 3rd PCIe lane is wired for 8x @ 2.0 (should be 3.0). Is there another fix for this, or is it an Intel/NVidia issue?
    Check out HARDOCP - PCI Express 2.0 vs 3.0 GPU Gaming Performance Review where they used:
    • single-GPU Geforce GTX 680 and Radeon HD 7970 video cards
    • dual-GPU GeForce GTX 680 SLI and Radeon HD 7970 CrossFireX
    • triple-GPU setups of GeForce GTX 680 3-Way SLI and Radeon HD 7970 3-Way CrossFireX

    Small consolation from their July 2012 conclusion:
    PCIe 3.0 is a great evolution, one day it may actually support a better gameplay experience compared to PCIe 2.0, but that day is not today.
    They didn't test with Sandy Bridge-E, but their results still apply.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


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