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  1. #1
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    Aug 2016
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    Question Realbench overheating cpu

    I'm still testing my new setup to see how low I can undervolt while stable in prime95, realbench, etc...
    My setup:
    CPU: i9-10900K
    Cooler: bequiet Dark Rock Pro 4 (with both fans installed)
    Thermal paste: Thermal Grizzly Kryonaut
    GPU: Asus TUF RTX 3080 OC
    RAM: 2x16GB 3600MHz HyperX Fury
    Motherboard: Asus TUF Z490-PLUS
    Case: Asus TUF GT501 (3 intake fans at the front panel, 1 exhaust fan on the back)
    BIOS settings:
    XMP: XMP I (DDR4-3603 17-21-21-39-1.35V)
    ASUS MultiCore Enhancement: Enabled - Remove all limits
    SVID Behavior: Auto
    AVX Instruction Core Ratio Negative Offset: 0
    CPU Core Ratio: Auto
    Power-saving & Performance Mode: Auto
    CPU Load-line Calibration: Level 4 - Recommended for OC
    BCLK Aware Adaptive Voltage: Enabled
    CPU Core/Cache Voltage: Manual Mode
    CPU Core Voltage Override: 1.370 V
    DRAM Voltage: 1.35000 V
    CPU Core/Cache Current Limit Max: 255.75 A
    Long Duration Package Power Limit: 4095 Watt
    Package Power Time Window: 56 Sec
    Short Duration Package Power Limit: 4095 Watt
    Intel SpeedStep: Enabled
    Intel Speed Shift Technology: Enabled
    Intel Turbo Boost Max Technology 3.0: Enabled
    CPU C-states: Enabled

    So the clock frequency right now is 4.9GHz on all cores.
    Vcore voltage under load (during realbench stress test) is 1.288v. I'm still not 100% sure if it's stable, but at 1.279v I had WHEA errors in hwinfo. I'll have to test 1.288v some more before I'm ceratin it's stable.
    However, I couldn't believe how high the realbench pushes the temperature (it goes to 99C in 5 minutes), especially considering I used to run realbench for 6 hours on my gaming laptop (i7-4720hq|gtx 980m) and temps were never even close to this. I already checked the cooler mounting pressure and thermal paste spread, it was perfectly fine (then I reapplied the thermal paste of course).
    I also tested with case side panel off and temperature was only 1C lower than when I tested with side panel on (in blender), so airflow is not an issue either.
    Last edited by Cannon.19; 12-05-2020 at 10:43 AM.

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