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  1. #1
    ROG Member Array Lazar1981 PC Specs
    Lazar1981 PC Specs
    MotherboardASUS ROG STRIX X470-F GAMING
    ProcessorRyzen 5 2600X
    Memory (part number)2x ACR26D4U9S8ME-8X
    Graphics Card #1MSI 1050 Ti Gaming X
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    Monitoriiyama ProLite E2783QSU-B1 x2
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    Can't get Offset working as desired

    Hello,

    For a few weeks now I'm an owner of the ROG STRIX X470-F with a R5 2600X. I realized the amount of voltage that is used for the CPU being too high. I tried some BIOS settings to reduce that. My goal would be to have this managed by negative offset. For idle I got it down to 0.75 - for load I would like to have it not higher than 1.375 - but that seem to be Impossible. A max negative offset of 0.875 results more than 1.375 with load. Setting it higher makes the system unbootable.
    On the other hand - when I set a fixed voltage of 1.375 everything runs fine and stable. So why can't I get the max voltage of 1.375 working with a negative offset? Maybe I forgot to set a needed BIOS option?

    Hope someone can help me with this

    Greets

  2. #2
    ROG Guru: Brown Belt Array RedSector73 PC Specs
    RedSector73 PC Specs
    Laptop (Model)FA506IU-AL130T x 2
    MotherboardROG CROSSHAIR VIII HERO (WI-FI)
    ProcessorAMD Ryzen 9 3900X 12-Core Processor
    Memory (part number)4 x G.SKILL F4-3800C14D-16GTZN 14-16-16-36 Samsung B-Die
    Graphics Card #1Gigabyte Aorus RTX 2080 Ti Xtreme WaterForce (GV-N208TAORUSX W-11GC)
    Sound CardArctis DAC
    MonitorAsus ROG Swift PG348Q
    Storage #1ADATA SX8200PNP 1TB
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    Unsubscribe from source material.
    Use AUTO, ignore what you think about voltage the chip is using being too high (it's wrong) and problem is solved.
    Last edited by RedSector73; 09-02-2021 at 01:57 AM.

  3. #3
    ROG Member Array Lazar1981 PC Specs
    Lazar1981 PC Specs
    MotherboardASUS ROG STRIX X470-F GAMING
    ProcessorRyzen 5 2600X
    Memory (part number)2x ACR26D4U9S8ME-8X
    Graphics Card #1MSI 1050 Ti Gaming X
    Sound Cardonboard Sound
    Monitoriiyama ProLite E2783QSU-B1 x2
    Storage #1Samsung 970 Evo Plus 500GB M.2
    Storage #2Samsung 970 Evo Plus 1TB M.2
    CPU CoolerStock Cooler
    CaseJonsbo U4
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    Thanks for your reply and sry
    Where or why should I unsubscribe? I don't understand what you are saying.
    Last edited by Lazar1981; 09-02-2021 at 07:11 AM.

  4. #4
    ROG Guru: Brown Belt Array RedSector73 PC Specs
    RedSector73 PC Specs
    Laptop (Model)FA506IU-AL130T x 2
    MotherboardROG CROSSHAIR VIII HERO (WI-FI)
    ProcessorAMD Ryzen 9 3900X 12-Core Processor
    Memory (part number)4 x G.SKILL F4-3800C14D-16GTZN 14-16-16-36 Samsung B-Die
    Graphics Card #1Gigabyte Aorus RTX 2080 Ti Xtreme WaterForce (GV-N208TAORUSX W-11GC)
    Sound CardArctis DAC
    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
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    That whatever or whoever told you your CPU is running too high is incorrect.

  5. #5
    ROG Member Array Lazar1981 PC Specs
    Lazar1981 PC Specs
    MotherboardASUS ROG STRIX X470-F GAMING
    ProcessorRyzen 5 2600X
    Memory (part number)2x ACR26D4U9S8ME-8X
    Graphics Card #1MSI 1050 Ti Gaming X
    Sound Cardonboard Sound
    Monitoriiyama ProLite E2783QSU-B1 x2
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    Can you explain that more in detail? Or can you give me some sources, where I can do some more research?
    Get me right... I really want to understand, what's making such a voltage necessary and in result the higher temperature especially when a lower voltage for load doesn't affect stability. I had Intel platforms for years and switched over to AMD for the first time. That's new for me
    Last edited by Lazar1981; 09-02-2021 at 10:57 AM.

  6. #6
    ROG Guru: Brown Belt Array RedSector73 PC Specs
    RedSector73 PC Specs
    Laptop (Model)FA506IU-AL130T x 2
    MotherboardROG CROSSHAIR VIII HERO (WI-FI)
    ProcessorAMD Ryzen 9 3900X 12-Core Processor
    Memory (part number)4 x G.SKILL F4-3800C14D-16GTZN 14-16-16-36 Samsung B-Die
    Graphics Card #1Gigabyte Aorus RTX 2080 Ti Xtreme WaterForce (GV-N208TAORUSX W-11GC)
    Sound CardArctis DAC
    MonitorAsus ROG Swift PG348Q
    Storage #1ADATA SX8200PNP 1TB
    Storage #22 x Samsung SSD 840 EVO 250GB
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    Ryzen does not work like Intel chipset. I don't know what you're trying to achieve, that is not clear from your posts, which is why not really investing into an answer.

    All going to say without you showing your benchmark baseline, then how do you know that your offset isnt just gimping your CPU for no real reason. In that, Voltage tends to go higher when there isn't any load. It does not mean it is out of specification. Higher temperature (but below throttling) vs something lower will not make any difference to the life of your CPU. It never has for Intel or AMD.
    Last edited by RedSector73; 09-03-2021 at 02:11 AM. Reason: fixed flow - it was late at night ! lol

  7. #7
    ROG Member Array Lazar1981 PC Specs
    Lazar1981 PC Specs
    MotherboardASUS ROG STRIX X470-F GAMING
    ProcessorRyzen 5 2600X
    Memory (part number)2x ACR26D4U9S8ME-8X
    Graphics Card #1MSI 1050 Ti Gaming X
    Sound Cardonboard Sound
    Monitoriiyama ProLite E2783QSU-B1 x2
    Storage #1Samsung 970 Evo Plus 500GB M.2
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    CPU CoolerStock Cooler
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    Quote Originally Posted by RedSector73 View Post
    Ryzen does not work like Intel chipset. I don't know what you're trying to achieve, that is not clear from your posts, which is why not really investing into an answer.

    All going to say without you showing your benchmark baseline, then how your offset isnt just gimping your CPU for no real reason. Is that, Voltage tends to go higher when there isn't any load. It does not mean it is out of specification. Higher temperature (but below throttling) vs something lower will not make any difference to the life of your CPU. It never has for Intel or AMD.
    Ah well... Didn't realize it is that incomprehensible. I want to get temperatures as low as possible. And in fact I got them down with lower voltages. But I wasn't aware of having no effect on lifetime of the CPU with lower temperatures. So in summary: I have cearly NO advantage by undervolting the CPU?

  8. #8
    ROG Enthusiast Array AfterShock PC Specs
    AfterShock PC Specs
    MotherboardAsus Crosshair VIII Hero
    ProcessorAMD Ryzen 5900x
    Memory (part number)F4-3200C14-16GFX
    Graphics Card #1EVGA RTX 3080 ti xc3
    Sound CardOnboard
    MonitorAsus VE278Q
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    Quote Originally Posted by Lazar1981 View Post
    Ah well... Didn't realize it is that incomprehensible. I want to get temperatures as low as possible. And in fact I got them down with lower voltages. But I wasn't aware of having no effect on lifetime of the CPU with lower temperatures. So in summary: I have cearly NO advantage by undervolting the CPU?
    what program are you measuring temps and voltage with and what are you using to load your cpu? I have a 3800xt that hangs around 1.45 to 1.5v under light loads like browsing forums my temps are around 50c, when I run cinebench my voltage drops to around 1.3 to 1.35 and stays in that range.

    When I got my 1st ryzen cpu which was an 1800x I was worried about how high the cpu voltage was and messed around with offsets and undervolting but with ryzen chips that just leads to stability issues. 2 things I've learned over the years is that ryzen is perfectly capable of handing it's own voltage and it's own overclocking. Just set it to auto and let it do it's thing.

  9. #9
    ROG Guru: Brown Belt Array RedSector73 PC Specs
    RedSector73 PC Specs
    Laptop (Model)FA506IU-AL130T x 2
    MotherboardROG CROSSHAIR VIII HERO (WI-FI)
    ProcessorAMD Ryzen 9 3900X 12-Core Processor
    Memory (part number)4 x G.SKILL F4-3800C14D-16GTZN 14-16-16-36 Samsung B-Die
    Graphics Card #1Gigabyte Aorus RTX 2080 Ti Xtreme WaterForce (GV-N208TAORUSX W-11GC)
    Sound CardArctis DAC
    MonitorAsus ROG Swift PG348Q
    Storage #1ADATA SX8200PNP 1TB
    Storage #22 x Samsung SSD 840 EVO 250GB
    CPU CoolerCoolermaster Liquid Pro Master 360
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    Quote Originally Posted by AfterShock View Post
    When I got my 1st ryzen cpu which was an 1800x I was worried about how high the cpu voltage was and messed around with offsets and undervolting but with ryzen chips that just leads to stability issues. 2 things I've learned over the years is that ryzen is perfectly capable of handing it's own voltage and it's own overclocking. Just set it to auto and let it do it's thing.
    Yes, that is my learned experience as well. From 1800x, 2700x, 3700x, 3900x & 5950x.

    Quote Originally Posted by Lazar1981 View Post
    Ah well... Didn't realize it is that incomprehensible. I want to get temperatures as low as possible. And in fact I got them down with lower voltages. But I wasn't aware of having no effect on lifetime of the CPU with lower temperatures. So in summary: I have cearly NO advantage by undervolting the CPU?
    Then buy AIO. And leave the CPU in AUTO.

    Not only a case of, no advantage, if you run CB20 test you will see the performance degradation it is causing.
    Last edited by RedSector73; 09-03-2021 at 02:16 AM.

  10. #10
    ROG Guru: White Belt Array
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    I also used to keep my 5900X undervolted on my C8F for the same reasons, thermals and a slightly higher top performance in MT.

    The fact that some CPUs can't be undervolted even by 0.01v, as they immediately become unstable, is due to binning. I got lucky somehow and my 5900X can be undervolted by a negative 0.05v offset without issues. Depending on the load, my cpu core voltage would vary between 1.15v in idle to a peak of 1.45v during CBR20. I also usually keep all the CO offsets to -30 but the two best cores at -16.

    Your desired max voltage of 1.375 seems pretty low to me for a multithreaded usage, did you verify that it was stable at that voltage under load ?

    Additionally, you should consider that a negative voltage offset is applied to both the peak voltage and the lower deep sleep voltages of each core, and this is probably why your machine can't boot if you go too low with the voltage offset.
    If you offset of negative 0.1v your cpu may attempt to go into a C6 ultra-low power sleep state using 0.1v instead of the normal 0.2v and be unable to bring a core back alive, while this would not happen if you manually set the CPU to a fixed 1.375v as it will never go under that voltage even during low power sleep states.
    You may overcome this issue a bit by disabling the "PSS Support" and "Global C-state Control" and "DF Cstates" options that you should be able to find in your BIOS.

    Also, a negative offset of 0.875 that you mentioned would make no sense because if you undervolt by 0.875v a cpu that usually runs at 1.5v you would be trying to run it at 0.625v and that looks quite improbable.

    However, I have to confirm that with the latest BIOS versions the AGESA management of the voltages improved quite a lot, and currently with the latest BIOS I get no differences in thermals or performances by udervolting the CPU, it improved so much that AGESA seems to be now able to keep the voltages naturally lower on my CPU without any BIOS setting.

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