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  1. #1
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    Jul 2017

    Angry ASUS Z270G + i7 7700k insane temp jumps

    Hello there folks!

    As some of you probably have heard, there are a lot of people experiencing high temps on their I7-7700k. Even on stock it'll reach 80 degrees.
    For those of you who havent heard, take a look here:
    It's already 67 pages long with replies from people experiencing these issues.

    However, someone mentioned that there might be a way to get rid of the high temps + the horrible temp spikes. A lot of people have successfully resolved it by manually setting the voltage on the CPU PLL setting in the bios, as the bios auto setting overvoltage it alot. There is just one little problem.. I cant, for the love of god, seem to find this CPU PLL OC voltage setting on my ASUS Z270G mobo anywhere..

    Atm Im running at max temp of 81,25 degrees testing AIDA64 for 30 minutes. That is on a watercooler NZXT Kraken X62. The CPU has even been delidded.
    Normal usage is around 40-50 degrees.

    I find this to be very troubling!

    Please help me out! Im pulling my hair on this problem :/

  2. #2
    ROG Enthusiast Array I.G.SYME@BTINTERNET.COM PC Specs
    Laptop (Model)Partners Ipad
    MotherboardAsus Z270G Gaming
    ProcessorI7 7700K
    Memory (part number)CMU16GX4M2C3200C16B
    Graphics Card #1NONE
    Graphics Card #2NONE
    Graphics Card #3NONE
    Graphics Card #4NONE
    Sound CardNONE
    MonitorDELL Ultrasharp 30 inches 16/10 ratio
    Storage #11TB Samsung 960 pro M.2 NVME
    Storage #2OCZ Revodrive 512gb 3x2
    CPU CoolerCustom watercooled loop
    CaseCorsair Carbide Air 540
    Power SupplySeasonic 400watt Fanless
    Keyboard Cheap Generic Wireless
    Mouse Logitech M705
    Headset Sennheiser PC 8 USB
    Mouse Pad Steel Series cloth
    Headset/Speakers Creative Labs
    OS Windows 10 64bit Home Edition
    Network RouterBT Hub 5

    Join Date
    Apr 2017

    Successive BIOS iterations seem to give a more stable and hopefully accurate set of readings. My 7700K still seems to show insane jumps on various cores for no reason which settle down almost as quickly. Currently sitting at mid 30's on idle with a custom water cooled loop using CPU temp but AI suite always shows different temps. Which one to believe? I don't fret about it too much, just use as a general guide.

  3. #3

  4. #4
    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 - 3600MHz 15-15-15-30-1T
    Graphics Card #1Titan Xp - EKFC waterblock
    Graphics Card #2Titan Xp
    Sound CardROG SupremeFX 2015
    MonitorHP ZR30w
    Storage #1Toshiba VX500 256GB
    CPU CoolerSwiftech Apogee GTZ
    CaseThermaltake Armor+ VH6000
    Power SupplyPCP&C Turbo Cool 1200w
    Keyboard ROG Falchion NX
    Mouse ROG Spatha X
    Headset ROG Delta S Animate
    Mouse Pad Steelseries Prism XL + ROG Scabbard II
    OS Windows 11 Home
    Accessory #1 Asus optical drive
    Accessory #2 Koolance ERM-2K3U
    Nate152's Avatar
    Join Date
    Feb 2013

    Have you guys tried setting the cpu core/cache voltage manually to around 1.15v for stock settings?

    I delidded my i7-7700k and got good results. Your temps do seem high after delidding.

    How are gaming temps? Here is mine at 5.2GHz with 1.440v.

  5. #5
    ROG Guru: Black Belt Array Korth PC Specs
    Korth PC Specs
    MotherboardASUS X99 R5E (BIOS2101/1902)
    ProcessorHaswell-EP E5-1680-3 SR20H/R2 (4.4GHz)
    Memory (part number)Vengeance LPX 4x8GB SS DDR4-3000 (CMK32GX4M4C3000C15)
    Graphics Card #1NVIDIA Quadro GP100GL/16GB, 16xPCIe3, NVLink1 (SLI-HB)
    Graphics Card #2NVIDIA Quadro GP100GL/16GB, 16xPCIe3, NVLink1 (SLI-HB)
    Sound CardJDS Labs O2+ODAC (RevB), USB2 UAC1
    MonitorASUS PG278Q
    Storage #1Samsung 850 PRO 512GB SSDs, 4xSATA3 RAID0
    Storage #2Comay BladeDrive E28 3200GB SSD, 8xPCIe2
    CPU CoolerRaijintek NEMESIS/TISIS, AS5, 2xNH-A14
    CaseObsidian 750D (original), 6xNH-A14
    Power SupplyZalman/FSP ZM1250 Platinum
    Headset Pilot P51 PTT *modded*
    OS Arch, Gentoo, Win7x64, Win10x64
    Network RouterActiontec T3200M VDSL2 Gateway
    Accessory #1 TP-Link AC1900 Archer T9E, 1xPCIe
    Accessory #2 ASUS/Infineon SLB9635 TPM (TT1.2/FW3.19)
    Accessory #3 ASUS OC Panel I (FW0501)
    Korth's Avatar
    Join Date
    Mar 2015

    The issue seems to be internal to the Intel processor (or Intel microcode, Intel firmware, Intel whatever). So it won't go away until Intel fixes it.

    The Intel discussion seems to focus entirely on processors shipped with Intel stock coolers.

    I suspect that better coolers (lol any half-decent huge air or AIO cooler) would still see temp spikes but probably less than the reported 15C~30C. In fact, I doubt that a CPU could heat up +30C in a fraction of a second then cool down 30C in another fraction of a second - it's just not enough time for thermal energy to diffuse through the material bulk of the part. It's either a very trivial problem (the DTS/PECI part placement or circuit implementation or sensitivity or control code is flawed) or it's a very serious problem (uncontrolled voltage spikes instantly heat the entire silicon substrate as they surge with wild and reckless abandon throughout the part ... then somehow dissipate the heat wave into nothing just as instantly) - I'm guessing the former, but the only way to confirm would be to take very accurate measures of thermal energy escaping the processor package.

    And I imagine that ASUS could implement software/firmware automation (or user settings) to briefly delay fan response so that momentary temp surges of +30C wouldn't ramp up cooling - if they haven't already. Until then, you might be able to mitigate the problem (and not have your fans surge up and down every time you click an icon) by assigning whatever fan controlling hardware monitor program you run at a lower priority so it doesn't poll the system as quickly and thus doesn't respond to (doesn't even have a chance to notice) millisecond fluctuations. This isn't as bad as it sounds, processors generally take quite a few seconds of sustained overheating before they reach alarm/shutdown/explosion levels, even when aggressively overclocked.
    Last edited by Korth; 07-19-2017 at 05:11 AM.

  6. #6
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    Jul 2017

    Strange. Maybe something went wrong while applying TIM and relidding. What stuff did you use?
    Last edited by roganaut; 07-21-2017 at 07:58 AM.

  7. #7
    New ROGer Array
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    Jul 2017

    Cant see what should have gone wrong with the TIM. Used Coollaboratory Liquid Ultra and ohh boy was it sticky..
    Max temps in games at stock settings with SVID turned off is around 75 degrees. Still a bit high if you ask me but better.

  8. #8

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