I5 8600k OC to 4.8GHZ 1.38V running peak 88DegC with Intel Burn Test

Hey Guys,

I was overclocking my i5 8600k last night to to 4.8GHZ 1.38V as stated above.

The stress tests AIDA64 hit a peek temp of 74DegC which for me is still acceptable.

Although when I ran Intel Burn Test, the chip did successfully completed the test withouth crashing, although the peek temp was around 88DegC which I found to be a little bit high.

Bare in mind I will use PC for gaming only, maybe Streaming too, but nothing more than that

Can you please advise if it can stay like that?

Thnks alot in advance
Reply to majerus.sven
7 answers Last reply
More about 8600k 8ghz 38v running peak 88degc intel burn test
  1. majerus.sven said:
    Hey Guys,

    I was overclocking my i5 8600k last night to to 4.8GHZ 1.38V as stated above.

    The stress tests AIDA64 hit a peek temp of 74DegC which for me is still acceptable.

    Although when I ran Intel Burn Test, the chip did successfully completed the test withouth crashing, although the peek temp was around 88DegC which I found to be a little bit high.

    Bare in mind I will use PC for gaming only, maybe Streaming too, but nothing more than that

    Can you please advise if it can stay like that?

    Thnks alot in advance


    You're on the knife's edge. Intel's test brought my 4690K to 81C. Fortunately those are tests and not games. You know what'll happen at a consistent 100% load. What happens during regular gaming and streaming? MSI AB can show you loads, temps and resource usages with its OSD.
    Reply to aquielisunari
  2. Run Asus RealBench to get REAL WORLD temps. IBT and others like Prime95 and AIDA64 can and will make your temps go way higher than what a regular program can achieve. So you are fine.
    Reply to TechyInAZ
  3. majerus.sven said:
    Hey Guys,

    I was overclocking my i5 8600k last night to to 4.8GHZ 1.38V as stated above.

    The stress tests AIDA64 hit a peek temp of 74DegC which for me is still acceptable.

    Although when I ran Intel Burn Test, the chip did successfully completed the test withouth crashing, although the peek temp was around 88DegC which I found to be a little bit high.

    Bare in mind I will use PC for gaming only, maybe Streaming too, but nothing more than that

    Can you please advise if it can stay like that?

    Thnks alot in advance


    Intel burn in test and such do not present real world temps (unless you do do those types of calculations). Still you are under 100c so you are still fine.
    Reply to jaslion
  4. Intel Burn Test is an extreme stress test.

    How extreme, you may ask?
    More extreme than streaming and recording and gaming and downloading all at the same time on my 1800X.
    Its an unrealistic workload. And dont worry. Even in this worst case load your CPU is still well below the 105°C throttling temperature.
    Reply to kgt1182
  5. kgt1182 said:
    Intel Burn Test is an extreme stress test.

    How extreme, you may ask?
    More extreme than streaming and recording and gaming and downloading all at the same time on my 1800X.
    Its an unrealistic workload. And dont worry. Even in this worst case load your CPU is still well below the 105°C throttling temperature.


    This comment made me smile. That is an extreme test. It's just that I was gaming, and running that test, and playing a movie and had a couple or a few browsers open and a couple monitors(HwMonitor and Speccy). . Somebody was having temperature issues.
    Reply to aquielisunari
  6. majerus.sven said:
    ... AIDA64 hit a peak temp of 74DegC ... IntelBurn Test ... peak temp was around 88DegC ...
    majerus.sven,

    On behalf of Tom's Moderator Team, welcome aboard!

    AIDA64 doesn't have any test combinations that yield conclusive thermal results, and Intel BurnTest can be nearly a 120% workload.

    Here's the operating range for Core temperature:

    Core temperatures above 85°C aren't recommended.

    Core temperatures below 80°C are preferred.

    http://imgur.com/Svr2si8.jpgCore temperatures increase and decrease with Ambient temperature.

    Guys,

    Intel tests their processors at 100% TDP for validating Thermal Specifications. Prime95 version 26.6 Small FFT's is ideal for CPU thermal testing, because it's a steady 100% workload with steady Core temperatures that typically runs Core i variants with Hyperthreading and Core 2 processors within +/- a few % of TDP. No other utility so closely replicates Intel's proprietary test conditions.

    Whether thermal testing or stability testing, the objective is to run utilities that give you a valid thermal baseline, but won't overload or underload your processor.

    Here’s a table of popular utilities grouped as thermal and stability tests according to % of TDP, averaged across five Generations of processors at stock settings:

    TDP ... Thermal Test - Steady Workload

    129% ... Prime95 v27.7 through v29.4 - Small FFT’s (AVX, No Offset)
    101% <-- Prime95 v26.6 - Small FFT’s
    89% ... HeavyLoad v3.4.0.234 - Stress CPU
    87% ... FurMark v1.19.1.0 - CPU Burner
    78% ... CPU-Z v1.83.0 - Bench - Stress CPU
    66% ... AIDA64 v5.95.4500 - System Stability Test - Stress CPU

    TDP ... Stability Test - Fluctuating Workload (Peak)

    123% ... OCCT v4.5.1 - CPU: OCCT (AVX, No Offset)
    118% ... LinX v0.6.5 - Default
    116% ... IntelBurn Test v2.54 - High
    113% ... OCCT v4.5.1 - CPU: Linpack (AVX, No Offset)
    110% ... AIDA64 v5.95.4500 - System Stability Test - Stress FPU
    99% <-- Asus RealBench v2.56 - Stress Test (AVX, No Offset)
    97% ... Intel Processor Diagnostic Tool v4.1.0.24 - Default
    94% ... Sandra 2017.09.24.41 - Burn in - Processor Tests
    92% ... CineBench v15.0 - CPU - Render Test
    79% ... Intel Extreme Tuning Utility v6.4.1.15 - CPU Stress Test

    As you can see in the above table, Prime95 version 26.6 is best for thermal testing. This is the utility that Real Temp uses to test Core temperature sensors.

    • Prime95 v26.6 - http://www.mersenneforum.org/showthread.php?t=15504

    Asus RealBench runs a realistic AVX workload, and is an excellent utility for stability testing. This is the utility that Silicon Lottery uses to test CPU stability.

    • Asus RealBench - http://rog.asus.com/rog-pro/realbench-v2-leaderboard/

    In the above table, all tests will show 100% CPU Utilization in Windows Task Manager, regardless of actual Workload. Higher TDP tests produce higher Core temperatures. Power (Watts) and Core temperatures will vary with Microarchitecture, Core count, Core speed, Core voltage, VID, Turbo Boost, Hyperthreading, Instruction Sets, Memory, IGPU, CPU cooler, BIOS versions and Microcode.

    • About Prime95:

    2nd through 8th Generation i3, i5 and i7 CPU's have AVX (Advanced Vector Extension) Instruction Sets. Prime95 versions later than 26.6 run AVX code on the CPU's Floating Point Unit (FPU) which causes unrealistic temperatures up to 20°C higher due to excessively high TDP workloads, as shown in the above table. Other high TDP utilities have similar results.

    AVX can be disabled in Prime95 versions later than 26.6 by inserting "CpuSupportsAVX=0" into the "local.txt" file in Prime95's folder. However, since Core temperatures will be the same as 26.6, it's easier to just use 26.6. AVX doesn't affect Core i 1st Generation, Core 2, Pentium or Celeron processors since they don't have AVX Instruction Sets.

    If you run AVX apps such as for rendering or transcoding, you may need to reduce Vcore and Core speed or upgrade your cooler and case fans to maintain stability and reasonable Core temperatures. Many 6th, 7th and 8th Generation motherboards address the AVX problem by providing offset adjustments in BIOS. An offset of -2 or -3 (200 or 300 MHz) is usually sufficient.

    Prime95's default test, Blend, is a fluctuating workload for testing memory stability, and Large FFT's combines CPU and memory tests. As such, Blend and Large FFT's both have fluctuating workloads which aren’t well suited for CPU thermal testing.

    Other stability tests such as OCCT have cycles that exceed 120% workload, which again aren’t well suited for CPU thermal testing. However, OCCT will by default, terminate the CPU tests at 85°C.

    The "Charts" in SpeedFan span 13 minutes, and show how each test creates distinct thermal signatures.

    http://imgur.com/AV0iCxD.jpgShown above from left to right: Small FFT's, Blend, Linpack and IntelBurn Test.

    Note the steady thermal signature of Small FFT's, which allows accurate measurements of Core temperatures. A steady 100% workload is crucial for thermal testing so the CPU, cooler, socket, motherboard and voltage regulators can thermally stabilize.

    Although AIDA64's CPU test is a steady workload, it's far below TDP, which is insufficient for thermal testing. All other AIDA64 CPU test combinations are fluctuating workloads, which again aren't well suited for thermal testing.

    You might want to read this Sticky: Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

    kgt1182 said:
    ... CPU is still well below the 105°C throttling temperature.
    Just to be accurate for our readers, 3rd Generation Ivy Bridge Throttle temperature is 105°C. 4th through 8th Generations are 100°C, while 5th Generation is 96°C.

    The correct Throttle temperature for the i5 8600K is 100°C.

    Product Specifications: Intel® Core™ i5-8600K Processor -
    https://ark.intel.com/products/126685/Intel-Core-i5-8600K-Processor-9M-Cache-up-to-4_30-GHz

    CT :sol:
    Reply to CompuTronix
  7. majerus.sven said:
    Hey Guys,

    I was overclocking my i5 8600k last night to to 4.8GHZ 1.38V as stated above.

    The stress tests AIDA64 hit a peek temp of 74DegC which for me is still acceptable.

    Although when I ran Intel Burn Test, the chip did successfully completed the test withouth crashing, although the peek temp was around 88DegC which I found to be a little bit high.

    Bare in mind I will use PC for gaming only, maybe Streaming too, but nothing more than that

    Can you please advise if it can stay like that?

    Thnks alot in advance


    I don't see a problem as long as your gaming and benchmark like 3DMark temperatures are OK?

    Which will be a lot lower than the stress tests.

    I do want to caution you regarding Intel Burn Test which I used to use all the time until I discovered, "
    Last updated: July 23, 2012".
    Reply to 4Ryan6
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