Brave Search

Stress Testing bringing CPU temps to 100C instantly

forums.tomshardware.com › threads › stress-testing-bringing-cpu-temps-to-100c-instantly.3702230

I agree with the other posters! ^ It's very possible it's a cooler issue. Although your cooler is rated for 150w, your CPU has a TDP of 125w (at base clocks), it draws much more than 150w at boost speeds, and whilst stressing. In fact it can draw up to 251w (PL2). It's very possible the cooler just isn't adequate enough at high clocks/load. Which Noctua paste are you using? H1/H2 have optimum operating temps between 70-120c, so that paste is good enough. As @hotaru.hino and @dorsai suggested, check cooler is seated correctly. You will obviously have to re-paste. Noctua's instructions suggest best method is to put a pea sized blob in centre of CPU. 2-3mm in diameter. Then seat the cooler. If the cooler has 4 screws, then tighten them in a criss-cross pattern from one corner to the opposite diagonal. This will ensure as you tighten down, you get an even spread of paste. Answer from Roland Of Gilead on forums.tomshardware.com

OCBASE

ocbase.com

OCBASE/OCCT : Free, all-in-one stability, stress test, benchmark and monitoring tool for your PC

With seamless integration of the renowned Hwinfo engine, OCCT ensures accurate and detailed monitoring of your hardware components. With real-time temperature monitoring and intelligent alerts, OCCT helps you maintain optimal performance while safeguarding against potential overheating issues.

Overclock.net

overclock.net › home › forums › graphics cards › nvidia

Very High Temps on OCCT Test. | Overclock.net

Ok, so I just did an OCCT test on the default clock: 816MHz and 1.05V. *Edit* For some reason I can't find the result, but the Temps stayed 71 and under. Can that small of an overclock really cause the temperature to jump that high?

Videos

10:12

YouTube

How to Stress Test CPU with OCCT | Single and Multicore methods ...

A (short) introduction to OCCT - Check stability in general or ...

March 19, 2021

11:04

YouTube

How to Test Your Computer for Overheating and Other Problems Using ...

December 13, 2016

06:14

YouTube

How to Use OCCT for Stress and Stability Testing | Test - RAM | ...

November 17, 2025

10:55

YouTube

OCCT – Le logiciel ultime pour tester votre processeur, carte ...

August 4, 2025

View all

reddit.com › r/occt › questions about temps in occt small/extreme

r/OCCT on Reddit: Questions about temps in OCCT small/extreme

December 13, 2023 -

I just recently upgraded my CPU to a 5800X3D. My cooler setup is a pretty standard fan setup and a 240 Cooler Master AIO. I've been having normal temps so far (Idle around 50°, Gaming up until 70°) and I decided to do some stability testing to make sure everything's fine.

OCCT Large/Extreme completed with no errors and a maximum temperature of 69° after 1h. As soon as I start a test on the small dataset with the the same settings, I cross the 90° thermal limit I put in my settings, apparently up to 93°.

Is this to be expected? I know the thermal limit for the 5800X3D is supposed to be around 90°, but these temps seem a bit too crazy for my taste. Any anecdotal evidence or help you guys might have?

Top answer

1 of 1

1

When you run a large test, the majority of the data stays in the RAM. This will make the CPU load the memory controller... but also make him wait for the memory to give him information so he can continue to compute. CPU small uses a very small data set that fits into your cache. Your CPU hardly waits for data to come in - it can thus spend more time computing and less time waiting. As obviously doing some compute works draws more power than waiting for the ram to answer, your CPU reaches new heights in terms of power consumption, and thus, temperature. Reaching such temps in the small data set mode is thus perfectly normal, and proves the test is indeed doing its job !

Tom's Hardware Forum

forums.tomshardware.com › home › cpus

[SOLVED] - Stress Testing bringing CPU temps to 100C instantly | Tom's Hardware Forum

Top answer

1 of 4

1

I agree with the other posters! ^ It's very possible it's a cooler issue. Although your cooler is rated for 150w, your CPU has a TDP of 125w (at base clocks), it draws much more than 150w at boost speeds, and whilst stressing. In fact it can draw up to 251w (PL2). It's very possible the cooler just isn't adequate enough at high clocks/load. Which Noctua paste are you using? H1/H2 have optimum operating temps between 70-120c, so that paste is good enough. As @hotaru.hino and @dorsai suggested, check cooler is seated correctly. You will obviously have to re-paste. Noctua's instructions suggest best method is to put a pea sized blob in centre of CPU. 2-3mm in diameter. Then seat the cooler. If the cooler has 4 screws, then tighten them in a criss-cross pattern from one corner to the opposite diagonal. This will ensure as you tighten down, you get an even spread of paste.

2 of 4

0

Yeah I have an old GPU I can try if needs be. I'll see what happens when I remove the RTX from the system entirely and go from there. Haha to be honest, I decided to build this PC not because I needed anything in particular but because I fancied a bit of a project so now I have the means to fiddle with things I may well get obsessed with thermal paste soon too! Yeah, I will definitely get you posted! Thank you so much for your help so far, I've really appreciated having someone to throw ideas at me! No worries, glad to offer help. That's the best thing about TH forum. Everyone bouncing ideas around, learning lot of good stuff as we go along! Love it!

Intel Community

community.intel.com › t5 › Mobile-and-Desktop-Processors › Intel-Core-i7-14700K-reaches-100-C-in-OCCT-test-after-1-minute › td-p › 1672898

Intel® Core™ i7-14700K reaches 100°C in OCCT test after 1 minute. - Intel Community

March 21, 2025 - Intel® Core™ i7-14700K reaches 100°C in OCCT test after 1 minute.

reddit.com › r/occt › why does the cpu temp go from 40 to 80 celsius in 2-3 seconds?

r/OCCT on Reddit: Why does the CPU temp go from 40 to 80 celsius in 2-3 seconds?

March 3, 2025 -

I have been running some stress tests and benchmarks in 3DMarks and there my cpu temp slowly climbs as the test goes on. And I have only ever got it to peak out at about 70 celcius even with their most performance heavy stress test for 20 minutes. However when I tested the CPU test in OCCT the temperature goes from about 40 celcius to about 80 in 2-3 seconds as soon as I start the test? How come and should it do this?

Top answer

1 of 3

2

Because specifically that OCCT "CPU" test runs your CPU at it's maximum speed and it takes a few seconds for your cpu cooler to catch up, that's very normal

2 of 3

1

More stress more power more heat. Normal.

Facebook

facebook.com › groups › PcBuildersCommunity › posts › 3880682202215132

Is OCCT supposed to make CPU reach 100c instantly with ...

We cannot provide a description for this page right now

Mediaket Tutorials

tutorials.mediaket.net › mediaket tutorials › software tutorials › occt free: friendly step by step guide to using it

OCCT Free: Friendly Step by Step Guide to Using it

May 15, 2026 - OCCT (OverClock Checking Tool) is a powerful and reliable application designed to stress-test your computer’s CPU, RAM, GPU, and power supply for stability and thermal performance. Perfect for beginners!

Find elsewhere

Google Bing Mojeek

Quora

quora.com › Should-I-upgrade-my-water-cooler-CPU-fan-OCCT-test-when-errors-temps-up-to-85-90-C-and-it-crashes-every-time

Should I upgrade my water cooler CPU fan OCCT test when errors temps up to 85-90°C and it crashes every time? - Quora

Answer (1 of 4): Maybe. Are you overclocking? While your temps are quite high when you stress test, they’re not reaching a point where many CPUs will throttle. Of course this will vary from CPU to CPU, but still your problem might be that your just being too aggressive with your OC.

Linus Tech Tips

linustechtips.com › the workbench › troubleshooting

OCCT power stress test yields 100C cpu temps - Troubleshooting - Linus Tech Tips

July 9, 2021 - https://linustechtips.com/topic/1354935-occt-power-stress-test-yields-100c-cpu-temps/ More sharing options... Followers 1 · Go to topic listing Troubleshooting · Buying a Fairphone charger · Didaka · 1 hour ago Posted in Phones and Tablets · 5 · Persistent BSODs almost exclusively during cold boot - extensive testing completed ·

Tom's Hardware

tomshardware.com › pc components › cpus

OCCT With Four Options - How We Stress Test CPUs

August 16, 2020 - OCCT offers a fairly challenging CPU stress test, which often gets overlooked. It might not generate the massive amounts of heat we measure under Prime95 with AVX, but it’s still a great choice for long stability tests. The software can log a number of important parameters, running in an endless loop or stopping after a defined length of time.

SharkGaming

sharkgaming.zendesk.com › hc › en-gb › articles › 10983243538962-Test-Your-PC-with-OCCT-Simple-Guide

Test Your PC with OCCT (Simple Guide) – SharkGaming Systems

March 10, 2026 - OCCT is a free program that can test whether your CPU, GPU, RAM, and power supply are running stable. The program stresses your computer and shows temperatures, voltages, and errors in real time, m...

reddit.com › r/buildapc › test occt, questions sur la température du processeur

r/buildapc on Reddit: Test OCCT, questions sur la température du processeur

January 27, 2024 -

Voici ma configuration :
Processeur : i9-14900K (+ soyez silencieux ! Silent Loop 2 360 mm)
MOBO : Gigabyte Z790 AORUS ELITE X WIFI7
RAM : Corsair Vengeance DDR5 2x32 Go, 6 800 MHz, CL32 (CMK64GX5M2X6800C32) XMP activé (6 600 MHz)
GPU : Gigaoctet 2070 Super
PSU : taisez-vous ! DARK PUISSANCE PRO 13 1600W

Quels devraient être les scores du processeur non overcolocké au test OCCT ?

Voici mes scores :
00:00:10 - Info - CPU - 1 threads, SSE : 63.36 (3ème à partir de la fin)
00:00:20 - Info - CPU - 32 threads, SSE : 736,29 (5ème ETP)
00:00:31 - Info - CPU - 1 threads, AVX : 65,57 (3ème ETP)
00:00:42 - Info - CPU - 32 threads, AVX : 760,28 (5ème ETP)
Est-ce normal ? Bien sûr, certains des autres résultats sont surcolockés, mais pas tous.

2) Dans les informations du système OCCT, mon processeur a un décalage de tension d'overclocking IA : 79 mV. Doit-il être là par défaut ?

3) Quelle devrait être la température de mon processeur, par ex. Test de résistance CPU-Z ?
Ma température centrale et celle de mon emballage sont de 100 °C. Je pense qu'il devrait être un peu plus bas sur cet AiO

Top answer

1 of 1

1

2) Je n'ai rien configuré pour le CPU dans le BIOS, juste les paramètres par défaut de la carte mère (seulement RAM XMP, plus lente que la fréquence RAM XMP) et j'ai mis à jour le BIOS. 3a) J'ai monté le refroidisseur plusieurs fois en utilisant différentes pâtes thermiques (MX-4 - résultats légèrement meilleurs [96], une pâte thermique locale [100], pâte thermique par défaut avec AiO [Je ne me souviens pas des résultats exacts, j'ai dû retourner le CPU défectueux, mais peut-être plus proche de 90]) Après avoir retiré le refroidisseur, il semble que la pâte soit répartie uniformément sur le CPU, au milieu il y a une couche très fine, un peu plus de pâte sur les côtés. 3b) Ma pompe est à 80 % (~2300 tr/min) à n'importe quelle charge, après 50 °C elle passe en douceur à 100 %. Les ventilateurs du header ont une courbe de 20 °C à 60 °C allant de 25 % à 100 %. 3c) Mon boîtier est un Dark Base Pro 901, il y a beaucoup d'espace - 1 disque dur monté, 3 ventilateurs d'admission (2 Silent Wings 4 140 mm par défaut, 1 haute vitesse), arrière - 1 par défaut - sortie, dessus le header AiO - sortie

Tom's Hardware Forum

forums.tomshardware.com › home › cpus

Should I worry about OCCT temps? | Tom's Hardware Forum

May 15, 2018 - The temps reach 100c at 1.25V on the Vcore under OCCT large data set. I have an H105 cooler from Corsair. Bought it refurbished 2 years ago so no more warranty. Under realbench temperatures stay in the high 60's and creep into the low 70's but it always goes back into the 60's after a few seconds ...

Elektroda

elektroda.com › home page › forum › computer service › computers hardware

Interpretation of OCCT Test: CPU Temperature, Performance Issues, Arctic MX-2 Paste & ATX 500W PSU

Top answer

1 of 11

1

Temperatures are good or too hot (I don't want to count). Generally it is Xeon on a modified disc. HWmonitor is a moron ancient program that should be removed from the network but dinosaurs still love it. Install HWiNFO and run in sensor only mode. At the core temperature, right click and set Tjmax to 85 degrees. The core temperature readings in this cpu on this board are just speculation. As already be guided by the CPU temperature reading from the motherboard. With HWiNFO in the background, run 10 minutes of the power supply test. In the OCCT settings turn off the test stop after exceeding the specified temperature or set the core for 95 degrees. After the test, give screen from HWiNFO. PS - follow the department regulations and list the components as you please.

2 of 11

0

Hello, cooling is box, but from a different processor. It is too weak for this processor, its maximum allowable temperature Tcase is 67 degrees (so on the cores it will be maybe about 75 degrees). If the housing does not provide adequate ventilation, it will also be warmer in it. Information on the power supply can be found on the power supply itself. A Power Supply test would be more useful than a CPU - the PS test will also heat up the graphics card.

Overclock.net

overclock.net › home › forums › software, programming and coding › other software

Is OCCT's temp monitor accurate? | Overclock.net

But 28Â°C is 82.4Â°F. A bit more of a likely story, but that still seems low by a couple degrees. I don't know what OCCT's built-in says. It doesn't move. But it says 37 right now.

reddit.com › r/overclocking › occt stress testing, i9 9900k temps?

r/overclocking on Reddit: OCCT stress testing, i9 9900k temps?

December 7, 2018 -

Hi all,

Just built a new pc with a i9 9900k and corsair h150 pro. I'm seeing idle temps in the mid 30s, and 85-95 in occt @ 5ghz @ 1.310v. However its not quite stable at this voltage. If I move to 1.315 the temps seem to sky rocket almost immediately after I start testing. Its really weird how it sky rockets so fast based on a .05 increase. Any thoughts?

Top answer

1 of 6

3

Kinda strange. I have almost the exact same specs except I'm using an x72 Kraken cooler. 5Ghz all core @1.315 vcore. I haven't ran OCCT but I get temps of around 78C on a cinebench run and about 88C after about 30 minutes of p95 26.6. Temps at 1.31v only drop about 3-4C Edit- I idle just about the same, anywhere from 28-32C depending on my room temp

2 of 6

2

Ok I'm an idiot. I think my heat sink wasn't tightened down enough. I broke thr thumbscrews on my other pc heatsink, so I didnt use a screwdriver to tighten out of fear I'd do the same again. There was quite a bit of room to tighten them up, and my temps seemed to drop quite a bit from tightening up.

reddit.com › r/overclocking › 9800x3d: occt reports 122c max temperature??

r/overclocking on Reddit: 9800x3d: OCCT reports 122C max temperature??

May 3, 2025 -

I've been running prime95 small all cores for the past 17 hours without any issues or errors on that end, while running OCCT only to monitor temperatures and clock speeds. Woke up just now to see OCCT report a max CPU die (average) temperature of 122C. Is this even possible?? Or is this a monitoring issue with OCCT's software? OCCT has been monitoring since I started running P95 and I haven't used the PC for anything else during the test. Does anyone have similar experiences with OCCT reporting crazy high temps like this?

For reference here's my build and oc:

CPU: 9800x3d
Motherboard: MSI x870e Carbon Wifi
Ram: 2x48 Corsair Dominator DDR5 6600mhz CL32
Cooler: Tryx Panorama 360mm AIO, using Thermal Grizzly Kryonaut paste

For the oc, I did:

PBO motherboard limits, 10x scalar, +200 boost clock, -15 all core curve optimizer, infinity fabric frequency and dividers set to 2200mhz, UCLK div1 mode set to UCLK=MEMCLK, and my ram set to the tightest timings for 6400mhz (200mhz lower than rated otherwise PC wouldn't boot)

Top answer

1 of 3

6

Might have just been a fluke and incorrect sensor reading. Especially if the other CPU sensor values are normal. OCCT uses a DLL from HWiNFO64, but even that is not immune to incorrect sensor readings. If you wanted to make sure, you would need to log the data to a file and then analyze the recorded values afterwards.

2 of 3

1

That sounds almost like a faulty sensor given it’s so high above everything else. Did you manage to resolve this yet?

Asus

rog-forum.asus.com › t5 › z170 › processor-overheats-in-occt-test-z170-pro-gaming-6700-stock-hsf › td-p › 671179

Processor overheats in OCCT test. Z170 Pro Gaming,... - Republic of Gamers Forum - 671179

March 6, 2024 - I will increase the offset to -0.15 ... The LLC is set to Level 4. According to ASUS AI Suite 3, the temperature hovers between 71 and 75 °C, which while hot is not so hot as to trigger shutdown of the test....

reddit.com › r/overclocking › help - guys are these temps acceptable? occt 1 hour extreme/variable cpu test.

r/overclocking on Reddit: Help - Guys are these temps acceptable? OCCT 1 Hour Extreme/Variable CPU Test.

August 26, 2025 -

Help - Guys are these temps acceptable? OCCT 1 Hour Extreme/Variable CPU Test.

Everything's stock. But PBO is on. I have a cheap AIGO Cooler, no AIO.

Top answer

1 of 1

1

PBO? This CPU is not unlocked, even if you increase the PBO by +200, it won't positively affect the clock. The temperature is actually okay for an extreme CPU test, it was supposed to be hotter. Did you do a curve optimizer?