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
Reddit
reddit.com › r/overclocking › how reliable is occt
r/overclocking on Reddit: How reliable is OCCT
June 5, 2019 -
New to overclocking, got asus prime z390 + 9700kf recently and followed this https://www.youtube.com/watch?v=bD1Ze80GpLo guide to a t and then got about 4k errors in less than 2 minutes before pc went into blue screen. Is there might be some problem on my part or this test is just garbage?
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4k errors in less than 2 minutes before pc went into blue screen
Sounds like it's working perfectly.
It's a great stress test that finds instability quickly.
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OCCT is strict AF. Like tougher-than-Prime95 strict! If it's throwing errors, you're not quite up to it's super-high stability standard. If it's throwing blue-screens, you're WAY off.
Tom's Hardware Forum
forums.tomshardware.com › home › systems
Is stress testing safe? | Tom's Hardware Forum
February 4, 2012 - Prime95 overnight testing is deemed by many to be the only way to test CPU's but when moving up ya OC's in steps, that can lead to a lot of long overnights and leaves a new machine owner waiting days... ... Some stress programs are absolutely not safe, especially Furmark and OCCT.
Videos
02:01
Can Stress Tests (Like Prime95/Aida64/OCCT) Damage A CPU? - YouTube
06:14
How to Use OCCT for Stress and Stability Testing | Test - RAM | ...
How To Use OCCT | Stability Tester
09:16
How To Use OCCT In Extreme Mode - YouTube
10:12
How to Stress Test CPU with OCCT | Single and Multicore methods ...
Steam Community
steamcommunity.com › discussions › forum › 11 › 4361249719400921855
Is it safe to use OCCT ? :: Hardware and Operating Systems
April 29, 2024 - No, you need 1200 Watts, otherwise you basically have no breathing room on the PSU @ full loads. For a UPS backup you need at least 1500VA which is approx 900-1000 Watts. You don't need a UPS that can handle the 1200 Watt PSU at 100% load, since ...
Reddit
reddit.com › r/occt › is it safe to use occt ?
r/OCCT on Reddit: Is it safe to use OCCT ?
April 29, 2024 -
Not saying it is not just asking.
My system is Intel i9 14900k and RTX 4090 plus a good amount of fans and a AIO.
Reason I ask is because last time I did a Power test, I think it is called, that testing power supply and mobo it used like 900 to 950 VA watts. I had a 1200 watt power supply but had to replace it. Replaced it with a 1000 watt power supply. Worried if the test uses 900 to 950 VA watts again it will damage my new power supply. Do I have a reason to be worried ?
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OCCT is safe. If your hardware doesn't survive - it was defective, or of exceptionally poor quality. A 1000W power supply should be able to sustain 1000W of power and handle transient (brief) spikes over that.
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My PSU corsair cx650 was failling, I did the power test, and it started failling even more fast. It did the job of showing me the correct hardware that was defective, but I am scared about using it again.
Reddit
reddit.com › r/pcmasterrace › should i use occt?
r/pcmasterrace on Reddit: Should I use OCCT?
May 11, 2024 -
Hi, just a quick question as I recently built a new PC (7800x3d / 4080s): should I use OCCT to stress test components?
I just had a blue screen a few months ago which didn't happen again, so I don't really have too much reason to stress test (no overclocking either) but I was wondering if you still used it for good practice.
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If the pc is working as you need it and your not overclocking right now, its not required or anything. If there is any instability occt will find it. So if you just wanna put the new parts through the gauntlet theres not much harm in it. Might highlight a problem that could be an issue later, and at least you'll be aware of it.
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I would do whatever you do normally as a stress test. Gaming really puts the GPU to work.
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?
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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.
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I’ve been overclocking my 5080. Using afterburner I passed OCCT, Furmark, 3DMark at +460 / + 2000. I played apex legends, cod and cyberpunk with no issue. I played Fortnite and that’s when the crashing started. I’m now down to 440/500 with 108 on power limit.
Softpedia
softpedia.com › news › reviews › windows software reviews
OCCT Review: Puts Your System Stability to the Test - Softpedia
OCCT
Benchmark your computer's CPU as well as push it to its limits by overclocking it with the help of this useful and user-friendly tool The bane of overclockers, perhaps even more than high temperatures and higher power consumption, is hardware instability. You tamper with a few clocks, maybe dial the voltage up or down a little, and all hell breaks loose. Consider giving OCCT a try if you're looking to test your system's stability. · Stability testing may be a long and arduous process, and monitoring your hardware can help reveal any underlying problems. Even if you're not one who overclocks, l
Overclock.net
overclock.net › home › forums › graphics cards › amd › amd drivers and overclocking software
Is OCCT reliable for checking errors and artifacts? | Overclock.net
Like right now, on stock voltage, ... if i go above that, OCCT will give me errors, even though the rest of the tests don't have a problem. ... It is my tool of choice it seems to do well for me....
OCBASE
ocbase.com
OCBASE/OCCT : Free, all-in-one stability, stress test, benchmark and monitoring tool for your PC
OCCT’s monitoring interface is clear and transparent, offering a straightforward view of critical system metrics. 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 ...
Overclock.net
overclock.net › home › forums › graphics cards › graphics cards - general
So how reliable is OCCT GPU stress test? | Overclock.net
OCCT is probably one of the better tests out there, that being said what is stable in one program doesn't mean it's stable in another. OCCT is what I consider an extreme test meaning even if you play a game that uses 100% of your GPU it won't ...
Lo4d
occt.en.lo4d.com › hardware › hardware diagnostic
OCCT [OCCT.exe] - Analysis, Malware, Safety
We have determined OCCT to be clean and safe to download.
Linus Tech Tips
linustechtips.com › the workbench › troubleshooting
Is OCCT good for stress test? - Troubleshooting - Linus Tech Tips
January 14, 2021 - Is OCCT good for testing the cpu temps and ram stability I will be buying the 5800x with nh-d15 cooler so I want to check the temps If OCCT is not good enough what to use Give your opinions please Thanks!
Tom's Hardware Forum
forums.tomshardware.com › home › graphics cards
Question - How reliable is OCCT? | Tom's Hardware Forum
July 22, 2025 - Since there aren't, it might seem that something corrupted the VRAM during that session, and when I rebooted and the VRAM was cleared, then the corruption went away. Is that a fair assessment? Or is OCCT just not too reliable and gave these errors when there were none?
AnandTech
forums.anandtech.com › home › hardware and technology › cpus and overclocking
Is OCCT reliable at all??? | AnandTech Forums: Technology, Hardware, Software, and Deals
October 22, 2008 - OCCT is reliable, it stopped it because it felt your CPU was too hot, in that case (given the set TJ max in OCCT) it stopped bc your CPU was 70C. It is a safety precaution.
Linus Tech Tips
linustechtips.com › computer hardware › graphics cards
Is OCCT Safe - Graphics Cards - Linus Tech Tips
April 27, 2015 - I have a G1 GTX 970 and I have heard a lot of good things about OCCT because of Its error checking feature but I've heard it can be dangerous Is This True Thanks
YouTube
youtube.com › watch
A (short) introduction to OCCT - Check stability in general or after OC - YouTube
Welcome to a short Introduction on OCCT (https://www.ocbase.com/). Most of you will be like WHAT? Let Me Explain.I stumbled across this one on reddit, and i...
Published March 19, 2021
Ventoy
rtech.support › guides › how-to-use-occt
How to use OCCT | rTS Wiki
3 weeks ago - There are multiple type of tests to run OCCT, each dependent on what you will need to test. Here we will only describe the methods to run specific stability tests (Selected on the right hand pane of the application): ... Default values are best set here. Ensure the test is set at 1 hour, and all other configurations are set as default (Unless specified otherwise):
Softonic
occt.en.softonic.com › home › windows › games › utilities
OCCT - Download
October 10, 2025 - It is safe to download. ... OCCT has been thoroughly scanned by our advanced security systems and verified by industry-leading partners. This file comes from the official developer and has passed all our security checks, showing no signs of ...
Reddit
reddit.com › r/overclocking › is occt memtest accurate?
r/overclocking on Reddit: Is occt memtest accurate?
January 2, 2026 -
Is occt memtest accurate? It show no error after 30 mins of CPU + linpack + mem + GPU but windows resource monitor show a lot of mem hard faults some times even 300/s I'm running a cheap ahh whitelabel b550m, 5700g with pbo enabled and soc tension on 1125mv, 2 sticks of patriot viper 3200mhz cl18 overclocked to 3800 cl20 also overclocking my igpu to 2200mhz with 1200mv
edit: also sorry if I said something dumb it's my first time getting this deep into overclocking
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Man what are these commenters doing on an overclocking sub (more so the guy recommending to stay away from OCCT because the free version makes you wait 10 seconds before tests lmao) Having hard faults is normal, even multiple hundred a second for periods of time. What wouldn't be normal if it's all the time and/or your PC feels slow/laggy/stuttery The one other guy is right, run multiple stress tests. They all test different things in different variations, so a failure in even just one means bad memory. But yes OCCT's memory test is good, run it for minimum an hour though (I believe 2 hours is the maximum for the free version unless they changed that recently). I would also recommend to download Testmem5 (like they also mentioned). 1usmus config is good to run, but absolut by anta777 is the other really good config to use. It's best to do both, but at least do one of them overnight (7+ hours) If it passes on your xmp profile, you don't need to test it with xmp off, though. If it's stable on xmp it will be stable on xmp off If it fails on xmp, you can do an RMA. I'm pretty sure all vendors will accept the RMA if XMP is faulty since it's advertised by them, even tho technically it's only truly guaranteed to be stable at xmp off by the original chip manufacturers (I could be wrong but I think they do accept RMA even if XMP on is unstable but xmp off is stable, someone correct me if that's wrong because I've never had to RMA ram)
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edit: also sorry if I said something dumb it's my first time getting this deep into overclocking Don't worry about it. You shouldn't be seeing that many hard faults per second. Can you download and execute TM5 with the 1usmus v3 @ 1usmus configuration file. If it fails reset BIOS and execute again. If it passes then disable PBO and any user amended settings. Execute the OCCT stability test again and check for errors. Use several stress-testing applications to confirm stability.
Reddit
reddit.com › r/overclocking › is occt feedback really that important or should i use another stress test?
r/overclocking on Reddit: Is occt feedback really that important or should I use another stress test?
September 20, 2020 -
I always crash in occt. Please help
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if you crash you're not stable. period. I've had many seemingly good overclocks that passed hours in occt but failed in prime and applications I use. But I haven't seen an overclock that failed occt and passed my compute heavy daily usage (compiling code + various engineering simulations). What I'm aiming at is that OCCT is not that heavy and is only good as a first screening (at least 30 minutes) before you do longer tests in something more sensitive to lack of stability (like prime95 with FFTs in 800-2000 range overnight).
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Your unstable . Add more volts untill it passes or bring it down a notch and be stable . If you got cheap cooling and a bad cpu that doesn't clock well and you don't like it so you fail stress tests and just say screw it it failed but I'm not taking it. Unstable In occt is a vary unstable oc. Adia 64 is a walk in the park for cpu . At the vary minamum Asus real bench 2.56 4 - 8 hrs Occt large data set avx2 4- 8 hrs. Prime 95 version 29.8 version 6 small ffts avx off 2 - 8 hrs. If you cant pass Asus real bench then you got a vary unstable oc. Increase volts try again . Bsod / whea error Increase vcore again re test. Ect ect