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  1. #1
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    7700K, Maximus IX, G.SKILL TridentZ Series 32GB DDR4 4000MHz KIT + XMP Mode

    Guys I need your help. I purchased the F4-4000C18Q-32GTZKW version but was not able to run at XMP rated speed of 40000MHz on the Hero IX & 7700K processor. Each stick only maxed out at 3200MHz manually during my testing after updating the BIOS and clearing the CMOS.

    Would it be safe to stay I have a bad batch of RAM sticks and replaced them would resolve the issue , or could there be another possible issue with the board/processor or anything else?

  2. #2
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    Have you tried tuning the SA and VCCIO voltages? DDR4 4000 would definately require some manual tuning.

  3. #3
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    Quote Originally Posted by Chino View Post
    Have you tried tuning the SA and VCCIO voltages? DDR4 4000 would definately require some manual tuning.
    Thanks for your response Chino!
    Do you mean that any speed higher than 3200MHz would require this adjustment to the SA and VCCIO or just to reach 4000MHz? It didn't boot at 3600MHz.
    [edit]
    I found the Kaby Lake OC Guide. I upped the settings accordingly but no dice, can't even boot at 3600MHz. I found another post were swapping the processor solved the issue - I will try that and report back.
    Last edited by X_Man; 07-24-2017 at 11:48 PM.

  4. #4
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    OK - with the new processor, I booted to 3600MHz with VCCIO and SA of 1.15. Since my initial processor could not, I can assume that the processor was the issue. I will use the OC Guide to see if I can get to 4000MHz. I could not boot with the XMP profile, not sure why - is this normal that the XMP profile not work in some cases and not in others? Any other suggestions?

  5. #5
    Moderator Array Nate152 PC Specs
    Nate152 PC Specs
    MotherboardROG Maximus IX Code
    Processori7-7700k 5.2GHz Delidded
    Memory (part number)16GB G.Skill Trident Z 4025MHz 17-17-17-39-2T
    Graphics Card #1Titan Xp - EKFC waterblock
    Graphics Card #2Titan Xp
    Sound CardROG SupremeFX 2015
    MonitorHP ZR30w
    Storage #1Toshiba OCZ VX500 256GB
    CPU CoolerSwiftech Apogee GTZ
    CaseThermaltake Armor+ VH6000
    Power SupplyEVGA Supernova 1600w Titanium
    Keyboard Cyberpower Skorpion K2
    Mouse Razer Basilisk
    Headset Sennheiser HD6XX / Modmic 5
    OS Windows 10 Home 64 bit
    Accessory #1 Asus optical drive
    Accessory #2 Koolance ERM-2K3U
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    Hi X_Man

    Whew 32GB of 4000MHz is asking alot, should have maybe gone with 16GB or a lower speed with 32GB but you still could get it there.

    i'd reset to defaults and set the ram manually, if you're not sure how it's easy....

    Set the AI Overclock Tuner to Manual.
    Scroll down to Dram Frequency and select 4000MHz.
    Scroll down to Dram voltage and enter in 1.40v.

    CPU VCCIO voltage: 1.25v - 1.30v
    CPU System Agent voltage: 1.25 - 1.30v - 1.35v
    Dram Voltage: 1.40v - 1.45v

    Start with the lowest voltage then add more if needed, the last voltage of each is the max you'd want to go.

    Go to Dram Timing Control - Enter the primary timings at the very top with command rate 2N.

    If the voltages don't help, try Maximus Tweak Mode 1 and 2 at the top of the Dram Timing Control page.

    Maximus Tweak Mode 1 - Helps with compatibility
    Maximus Tweak mode 2 - Helps with overclocking, I think this one could help.

    Fingers crossed you get it stable, let us know how it goes and what voltages you needed.

  6. #6
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    Quote Originally Posted by Nate152 View Post
    Hi X_Man

    Whew 32GB of 4000MHz is asking alot, should have maybe gone with 16GB or a lower speed with 32GB but you still could get it there.
    Yeah I hear you - I just saw mobo can handle 4133+ and that was about the extent of my research LOL

    I will give this a shot and report back. Thank you for your help NateDOG!

  7. #7
    ROG Guru: Grand Master Array
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    Quote Originally Posted by X_Man View Post
    Thanks for your response Chino!
    Do you mean that any speed higher than 3200MHz would require this adjustment to the SA and VCCIO or just to reach 4000MHz? It didn't boot at 3600MHz.
    [edit]
    I found the Kaby Lake OC Guide. I upped the settings accordingly but no dice, can't even boot at 3600MHz. I found another post were swapping the processor solved the issue - I will try that and report back.
    The further you stray from 2133MHz/2400MHz, the higher the chances that your system will require manual tweaking to get the memory stable.

    I assume you've read the guidelines for SA & VCCIO tuning from Raja's guide.

  8. #8
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    Chino - Yes I read the OC Guide.

    I tried what Nate said and upped the SA & VCCIO max making the changes he recommend and still do dice. I cannot boot above 38000MHz. My timings are 15-15-15-36 2T at 1.30v. I would rather have gone with a 2X16GB vs 4x8GB sticks. I bought from NewEgg which I am kinda not please with right now do to some shady pricing with the Strix 1080 GTX they tried to pull.

    Should I RMA the RAM sticks or keep them?

  9. #9
    Moderator Array Nate152 PC Specs
    Nate152 PC Specs
    MotherboardROG Maximus IX Code
    Processori7-7700k 5.2GHz Delidded
    Memory (part number)16GB G.Skill Trident Z 4025MHz 17-17-17-39-2T
    Graphics Card #1Titan Xp - EKFC waterblock
    Graphics Card #2Titan Xp
    Sound CardROG SupremeFX 2015
    MonitorHP ZR30w
    Storage #1Toshiba OCZ VX500 256GB
    CPU CoolerSwiftech Apogee GTZ
    CaseThermaltake Armor+ VH6000
    Power SupplyEVGA Supernova 1600w Titanium
    Keyboard Cyberpower Skorpion K2
    Mouse Razer Basilisk
    Headset Sennheiser HD6XX / Modmic 5
    OS Windows 10 Home 64 bit
    Accessory #1 Asus optical drive
    Accessory #2 Koolance ERM-2K3U
    Nate152's Avatar
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    This kit here has timings 18-19-19-39.

    https://www.amazon.com/G-Skill-Tride.../dp/B01MS6UB1L

    Try these timings.

  10. #10
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    Nate - those are the timings I tried.

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