Games never push your GPU to the same degree OCCT would, but you could still encounter instability issues from time to time. Loads are very different between games - while it would run fine in 9/10 games, the tenth game it starts to crash constantly. Answer from Jaba01 on reddit.com
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OCBASE
ocbase.com
OCBASE/OCCT : Free, all-in-one stability, stress test, benchmark and monitoring tool for your PC
Ocbase is the home of OCCT, the most popular all-in-one stability / stress testing / benchmarking / monitoring tool available for PC
Professional editions
Ocbase is the home of OCCT, the most popular all-in-one stability / stress testing / benchmarking / monitoring tool available for PC
Benchmark leaderboards
Ocbase is the home of OCCT, the most popular all-in-one stability / stress testing / benchmarking / monitoring tool available for PC
Free, all-in-one stability, stress test, benchmark…
Ocbase is the home of OCCT, the most popular all-in-one stability / stress testing / benchmarking / monitoring tool available for PC
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Steam
store.steampowered.com › app › 3515100 › OCCT
OCCT on Steam
May 14, 2026 - OCCT is the gamer's favorite app for stress testing their PC or Steam deck components and check for errors ! Find out if your latest crash is due to a hardware malfunction or yet another game bug, and see all monitoring and system information ...
Discussions

How reliable is OCCT for a stability test?
Games never push your GPU to the same degree OCCT would, but you could still encounter instability issues from time to time. Loads are very different between games - while it would run fine in 9/10 games, the tenth game it starts to crash constantly. More on reddit.com
🌐 r/overclocking
25
4
February 6, 2025
J'ai lancé un test OCCT CPU + RAM et j'ai obtenu ça, aidez-moi
N'oubliez pas de consulter notre Discord où vous obtiendrez des réponses plus rapides ! https://discord.gg/EBchq82 Je suis un bot, et cette action a été effectuée automatiquement. Veuillez contacter les modérateurs de ce subreddit si vous avez des questions ou des préoccupations. More on reddit.com
🌐 r/pchelp
1
0
September 23, 2025
Test occt
Salut, il te vend ça pour combien ? Sinon => Tests à lancer CPU : test Small Data Set 10–15 min => surveille température (<95 °C) et stabilité. GPU : test 3D 5 à 10 min => surveille température (<85 °C) et artefacts. RAM : test mémoire 5 à 10 min => surveille erreurs éventuelles. À observer pendant les tests : Températures CPU/GPU Vitesse des ventilateurs Crashs ou artefacts Éventuelles erreurs mémoire Si tout est stable, la tour est en bon état. Sinon, ça peut indiquer un problème de refroidissement, de carte ou de RAM. More on reddit.com
🌐 r/pcmasterraceFR
4
1
March 21, 2026
Understanding OCCT
It's basically p95 small FFT, among the heaviest tests you can run. p95 small FFT, OCCT small dataset, linX, Y-Cruncher all tests are the Heavy Quartet of Stresstesting. This is my 5800X on quite tuned PBO and a custom loop. https://imgur.com/a/fKYJhMJ Edit: just ran r23 to check settings and thermals and scored 16460... If you only ever are going to game just check that you can compile shaders in TLOU1 and UE5 games More on reddit.com
🌐 r/overclocking
25
5
May 9, 2024
People also ask

Is OCCT free to use?
Yes. OCCT is free software with full access to stability testing, monitoring, benchmarking and certificate features.
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occt.io
occt.io
OCCT | Free Stability Test & Hardware Monitoring
What is OCCT used for?
OCCT is used to stress test, benchmark and monitor computer hardware including CPU, GPU, RAM and power supplies under heavy loads.
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occt.io
occt.io
OCCT | Free Stability Test & Hardware Monitoring
Why should I download OCCT?
If, at any time, you’ve pushed your PC beyond regular use—whether building it or just by playing demanding games or heavy apps—you’ve likely asked yourself if your machine can handle the load. OCCT is designed to help you see your system’s limits before an actual problem appears. You might view it as a way to check your computer’s overall fitness. It’s not just telling you your battery functions well; it reveals your processor’s reactions to a heavy load. And, in many situations, this is the sole means of finding out about a problem with a part. · OCCT allows you to check the performance of ea
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gizmodo.com
gizmodo.com › download › utilities › occt
Download OCCT for Windows and Linux | Gizmodo
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TechSpot
techspot.com › downloads › 4665-overclock-checking-tool.html
OverClock Checking Tool (OCCT) Download Free - 17.0.3 | TechSpot
2 days ago - The name OCCT comes from OverClock Checking Tool. This application will let you benchmark and overclock your system components. OCCT is the most popular all-in-one stability check and stress test tool available.
Rating: 4.4 ​ - ​ 298 votes
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Occt
occt.io
OCCT | Free Stability Test & Hardware Monitoring
Free OCCT stability and stress testing for Windows and Linux. Test CPU, GPU, RAM and PSU with benchmarks and real-time monitoring.
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SourceForge
sourceforge.net › projects › occt
OCCT download | SourceForge.net
OCCT
Download OCCT for free. Ultimate stability testing for overclocked PC performance. OCCT (OverClock Checking Tool) is a powerful diagnostic software designed to test and monitor the stability of overclocked computer systems. It is widely used by PC enthusiasts and professionals to push hardware ... OCCT (OverClock Checking Tool) is a powerful diagnostic software designed to test and monitor the stability of overclocked computer systems. It is widely used by PC enthusiasts and professionals to push hardware to its limits and ensure reliable performance under heavy loads. OCCT offers a range of s
Rating: 5 ​
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Reddit
reddit.com › r/overclocking › how reliable is occt for a stability test?
r/overclocking on Reddit: How reliable is OCCT for a stability test?
February 6, 2025 -

Hello, I have a few questions about OCCT as a stability test. How reliable are these tests? I was testing my GPU overclock using the 3D Adaptive "extreme" test, testing various overclocks. I set +200 on core clock and +1500 on memory clock in MSI Afterburner. Other benchmarks and games were always stable but as soon as I ran the OCCT test it showed me a lot of errors. So I decreased core clock to +150 and left memory clock at +2000 and let it run for another half hour. This time I had no errors. Does this mean that my first overclock despite being stable in games was indeed NOT stable? And does that mean that my second overclock now should be in fact stable as there were no errors?

Find elsewhere
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GitHub
github.com › occt-power-supply-test
OCCT Power Supply Test · GitHub
May 19, 2026 - OCCT combines CPU, GPU, VRAM, and OCCT power supply test modes with OCCT monitoring graphs and OCCT error reporting exports—popular when validating new PSUs - OCCT Power Supply Test
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SharkGaming
sharkgaming.zendesk.com › hc › en-gb › articles › 10983243538962-Guide-to-using-the-OCCT-Test-Program
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...
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Ventoy
rtech.support › guides › how-to-use-occt
How to use OCCT | rTS Wiki
3 weeks ago - OCCT stands for Overclock Checking Tool. Its a stability testing suite as well as a excellent error checking tool that allows for stress testing (like that found in the HWInfo stress test guide) and as an added bonus, error checking within that stress test to ensure that the system/components ...
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Gizmodo
gizmodo.com › download › utilities › occt
Download OCCT for Windows and Linux | Gizmodo
3 days ago - Opening the software gives you a simple interface, but hidden beneath that simplicity is a great deal of activity. There are various stress tests in OCCT, each one either testing the CPU, checking the GPU stability, or verifying the RAM consistency.
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Reddit
reddit.com › r/pchelp › j'ai lancé un test occt cpu + ram et j'ai obtenu ça, aidez-moi
r/pchelp on Reddit: J'ai lancé un test OCCT CPU + RAM et j'ai obtenu ça, aidez-moi
September 23, 2025 - OCCT v16.1 beta apporte un overclocking et un undervolting en direct, ainsi que des optimisations pour les CPUs Intel Arrow Lake sous Linux. ... Comportement bizarre du PC, j'arrive pas à comprendre. Aidez-moi svp. ... TEST DE STRESS OCCT… ! Tous les tests de stress sont exécutés simultanément…
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Make Tech Easier
maketecheasier.com › home › computing › windows › 6 reasons why occt is my go-to tool for stress testing cpus and gpus
6 Reasons Why OCCT Is My Go-To Tool for Stress Testing CPUs and GPUs - Make Tech Easier
November 27, 2024 - While simple to start, it still offers FFT-based stress testing and advanced functions like Prime95. You can configure load type, instruction set, threading behavior, stress intensity, and many other vital functions. I won’t say it’s more powerful than a tool like AIDA64, but it does a great job of balancing simplicity and customization. One of the biggest reasons I prefer OCCT is its all-in-one nature.
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Overclock.net
overclock.net › home › forums › benchmarks › benchmarking software and discussion
Post your OCCT Benchmark results here | Overclock.net
1) Download OCCT here: OCBASE/OCCT : Free, all-in-one stability, stress test, benchmark and monitoring tool for your PC 2) Run all four CPU benchmarks 3) Submission Format: Take a screen snip of your bench result in addition to the CPU and MEMORY tabs of CPUz, like this: For now, it's merely...
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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 - Learn to use OCCT with this Mediaket guide. Test your CPU, RAM, GPU, and power supply safely with simple steps designed for beginners and clear instructions.
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GitHub
github.com › OCCT-Stability-Test-Tool
OCCT Stability Test Tool · GitHub
May 9, 2026 - OCCT Stability Test Tool provides professional PC stress testing for advanced users. Use this Power Supply Tester OCCT to detect hardware errors, monitor voltages, and validate overclocking stability.
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Snapfiles
snapfiles.com › get › occt.html
OCCT - system stability testing
system stability testing OCCT (Overclock Checking Tool) is a tool to check your system stability by running 4 built-in tests, aimed at testing CPUs, GPUs and power supplies. In addition, OCCT also monitors in temperatures, voltages and fan speed, ...
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XDA Developers
xda-developers.com › home › other hardware › these are the only benchmarks i trust when stress testing my undervolt
These are the only benchmarks I trust when stress testing my undervolt
November 7, 2025 - OCCT, or OverClock Checking Tool, is one of the most comprehensive stress testing tools you can find. It's free, includes benchmarks and stress tests for almost all the components, and can uncover instabilities that other tools might gloss over.
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Software Informer
occt.software.informer.com › windows › system tools › benchmark
OCCT Download - Assess your system’s stability by conducting
Put the performance of your computer's CPU and GPU to the test by overclocking your PC to detect different types of errors. Generate graphs displaying temperature and voltages and read reports.
Published   May 23, 2026
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MAINGEAR Support
help.maingear.com › maingear support › knowledge base › occt - hardware stress test
OCCT - Hardware Stress Test - MAINGEAR Support
September 23, 2025 - Please download OCCT which can be found here: OCBASE/OCCT : Free, all-in-one stability, stress test, benchmark and monitoring tool for your PC Depending on if