System Agent voltage too high..???

Discussion in 'Processors and motherboards Intel' started by rap1021, May 8, 2021.

  1. rap1021

    rap1021 Master Guru

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    Untitled.png Hello,

    I have just noticed this that the system agent voltage is 1.406v in bios as well as in windows as reported by hardware monitor.
    i don't do any overlocking, everything is set to auto/default.
    The only thing I did was enable XMP.
    System agent voltage when XMP enabled is 1.406v and when XMP disabled is 1.056v.
    I don't know what is the use of System agent voltage or what does it do, but I know that it shouldn't be that high.

    I9 10850k
    Asus Z490-E
    G.skill tridentz rgb 2 x 8 gb 3600mhz @1.35v
     
    Last edited: May 8, 2021
  2. bluedevil

    bluedevil Master Guru

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    Check for a bios update and manually set it to default value of 1.05 if you get instability increase voltage by a max of 10% over default. High voltage might ruin the memory controller over time. Also check Intel documentation for default safe voltages and safe limits.
     
  3. bobnewels

    bobnewels Master Guru

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    Try different software and if you think it is still high adjust it manual like bluedevil suggested. My 10850K with that Cupid HWMonitor is reading 2.0v.Not true at all
    hw.jpg
     
  4. GREGIX

    GREGIX Master Guru

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    Check bios.
    If u do not OC ram, just XMP, SA/IO 1.25/1.2V should be enough. If U train with thighter secondaries/whatever else, SA/IO at 1.4/1.3V still would be safe for 10x000series.
    Check intel 24/7 DDR4 memory stability thread on overclock.net if u need to know more.

    BTW I am running my mems 4266Mhz 16 16 16 34@ 1.5V with SA/IO both 1.288V since like 2 months, no problems what so ever(9900KF@5Ghz). Same memorys was running half a year or more at 4100 15 15 15 30@1.53 AAND 1.27/1.24V SA/IO. Much depends on CPU and its IMC, that was with 8086k@5.1Ghz.
     
    Last edited: May 30, 2021
    -Tj- likes this.

  5. -Tj-

    -Tj- Ancient Guru

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    Im now at 10500 with ram OC 4237mhz CL16 1.45v via blck 102.50mhz and need SA 1.28v and IO ~1.24v, if either a bit lower it can randomly crash in Destiny2.

    Auto set a bit over that, but this was already at default 3600mhz ram.
     
  6. lucidus

    lucidus Ancient Guru

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    I have concerns about SA and VCCIO on my 6700k/z170 but you guys seem to have much higher voltages than mine. <1.25v is perfectly safe? I need 1.2v SA and VCCIO in the bios for stability even at 2133Mhz (four sticks) and hwinfo shows it going as high as 1.232v. Anything less can result in memory management bsod's.
     
  7. Chrysalis

    Chrysalis Master Guru

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    These board vendors seem to assume anyone using XMP is using 4ghz ram, turn it down, thats way way too high.
     
  8. bluedevil

    bluedevil Master Guru

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    Why not lower the ram frequency and tighten the timings and subtimings so you don't stress the memory controller that much? I mean in theory at least, say ram that is 4000 MHz 18 18 18 36 should be the same as 2000 MHz with 9 9 9 18. What really matters is frequency vs timings ratio so you could do something more reasonable like 3600mhz with tighter timings.
     

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