occt power supply reddit

reddit.com › r › techsupport › comments › bxij99 › help_with_occt_errors_power_supply_test

r/techsupport - help with OCCT errors (power supply test)

June 20, 2019 -

Hi all,

I am trying to lock in my settings and stabilize my first ever overclock and have run into an issue with OCCT returning errors on a power supply test. When using OCCT 5.0.1 power supply test (2019) it returns 63 errors, but I am unsure where to start with trying to resolve them. When I run the 2012 version I do not get any errors. I have attached the results of both below, and can see there is a difference in the power graphs. Am I missing a setting somewhere where OCCT gives me more information on the errors discovered or a more detailed report?

2012 results: https://imgur.com/a/ddhmWAJ

2019 results: https://imgur.com/a/glGwxVH

Top answer

1 of 2

1

Can you click on the errors to view what they say? Could be anything otherwise

2 of 2

1

Did you manage to resolve your problem ? I have the exact same problem. All individual test are ok for me except the power supply. I dont know what to do

reddit.com › r/occt › occt power test

r/OCCT on Reddit: OCCT Power Test

January 18, 2021 -

Hello,

I've been having issues with my PC resetting while playing some games (Spellbreak, Rust) or streaming (HBOmax, Netflix). It does not crash during League of Legends or while watching YouTube). Some people have suggested a power supply issue (though I have a 700 w PSU). I ran the power test on OCCT. I'm not sure what it did but from looking at the temps/power/etc. it seems like it puts a lot more stress on the hardware than those games would. After the hour test, my computer never crashed and the test found no errors.

Would this rule out a power supply issue and probably an overheating issue?

Top answer

1 of 2

2

Cpu? Temps when running occt large avx2 and small avx2? Overclocked? Rules out a power supply issue. That's about it.

2 of 2

2

I'd put my money on your ram, I'd the power supply test did hold correctly. Give a shot to my memory test, you'll quickly know :)

Videos

youtube.com

How To Use OCCT | Stability Tester

02:00

YouTube

How to Load Test Your PSU with your PC for Free - YouTube

October 10, 2025

06:14

YouTube

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

November 17, 2025

06:05

YouTube

Occt - Stability Test - Power - YouTube

November 8, 2024

View all

reddit.com › r/overclocking › has anyone used power test in occt?

r/overclocking on Reddit: Has anyone used power test in OCCT?

August 18, 2020 -

What are norms temps after a minute?

My cpu jumps to 80C right away then after abt 1-2 mins is mid 90s and going up so I stop it. Is that normal?

Top answer

1 of 2

2

You don't say what you are using but on my 10600k over clocked to 5.1 my max spiked to 76-78C. What CPU? What type of cooler? I have a custom loop.

2 of 2

1

Power test uses CPU and GPU. In another comment you said it's shutting down, maybe your PSU isn't sufficient?

reddit.com › r/pcmasterrace › occt power supply test viability 1300w psu/4090

r/pcmasterrace on Reddit: OCCT power supply test viability 1300w psu/4090

November 12, 2023 - I know that it probably is wanting ... should handle it. Any tips on what I might be doing wrong? System is 100% stable in other tests, even over a long period of time....

reddit.com › r/overclocking › help with occt (power supply test)

r/overclocking on Reddit: help with OCCT (power supply test)

June 6, 2019 -

Hi all,

I am trying to lock in my settings and stabilize my first ever overclock and have run into an issue with OCCT returning errors on a power supply test. When using OCCT 5.0.1 power supply test (2019) it returns 63 errors, but I am unsure where to start with trying to resolve them. When I run the 2012 version I do not get any errors. I have attached the results of both below, and can see there is a difference in the power graphs. Am I missing a setting somewhere where OCCT gives me more information on the errors discovered or a more detailed report? This is my first time using OCCT

2012 test results: https://imgur.com/a/ddhmWAJ

2019 test results: https://imgur.com/a/glGwxVH

Top answer

1 of 1

1

The 2012 version uses a MUCH lower load than the 2019 version. The 2019 version uses a real man load version of "Linpack". It draws more amps than 29.8 build 3 prime95 small FFT AVX (I think FMA3 draws the same though). Compare the Linpack in the 2012 vs the 2019 version and see. I don't know what happens if you set 2012 linpack to use 90% of your RAM, however, but the presets in the 2012 version are not suitable for modern systems.

reddit.com › r/occt › pc immediately shuts down on power test

r/OCCT on Reddit: PC immediately shuts down on Power test

June 23, 2021 -

Hi all,

I've just downloaded OCCT today after trying to find the root cause to a PC crash/restart I've been having, and now OCCT causes my PC to immediately shutdown when running Power test.
I built the PC with all new components (expect from GPU which I have since replaced and still experience the issue).

PC Specs:

Case: Phanteks P400a
Motherboard: MSI Meg Unify X570
AIO: MSI MAG 360mm
RAM: Corsair Vengeance RGB Pro 32gb (2x16gb) DDR4 3600mhz (with 2 light enhancement kits)
CPU: AMD Ryzen 9 5900x
GPU: XFX Speedster MERC Radeon 6900XT (Black edition)
PSU: CORSAIR HX1000 Modular ATX PSU - 1000 W
GPU Support: UpHere (G276ARGB)
Storage:
Sabrent Rocket Plus 1tb NVME M.2
6TB HDD and my old SSD's (500gb + 250gb)

PC Crash/Restart:

My PC randomly restarts when playing COD Warzone. I don't play many other games but often working on the PC for 9-11 hours a day before playing games and never had any issues.

This has been happening since I built the PC in December, and has happened around 6-7 times now. It's really inconsistent as to when it happens and I've not been able to pinpoint it to an exact action/scene in-game.
There was a period since perhaps late March after I changed some settings (disabled power-saving mode & turned off automatic Windows updates), but has now come back and happened twice in the last week.

I received an event log for today's crash which was:
'Event 41, Kernal Power' - "The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly."

Following that information, I eventually found myself with a potential PSU issue which is where I discovered OCCT to perform some stability & stress tests, which is what's lead me here with my PC immediately shutting down when running a test.

The exact steps were as followed:

Downloaded & installed 'OCCT PERSONAL STABLE (x64) 8.2.1' from ocbase.com
Launched the application
Bit of navigation and research to figure out what I needed to run. No settings were changed.
Under the 'Test' page and 'Test Schedule' menu, selected 'Power'.
- Instruction set = Auto
Selected the large red button to run the tests
Presented with a popup related to the Pro version and directed to a web-page to be able to continue to execute the test
Hit the red button again to begin the test
PC turned off
Waited patiently incase I missed a prompt/warning notifying me that the PC would turn off, but after about 5 minutes nothing happened
Tried to turn on the PC to no avail
Turned the power switch on the PSU off & back on
Tried to turn on the PC to no avail
Repeated power switch step whilst also unplugging PSU cable and then replugging
PC turned on as expected

If any one has the answer to the PC Crash/Restart issue then I'd happily propose to you, but mainly looking for advise and support on the OCCT issue and why it turns my PC off completely and why I have to unplug & plug PSU cable back in for it to turn back on?

Thanks in advance <3

Top answer

1 of 5

3

This one's easy : a clean, instant shutdown on the power test is 99% of the time caused by a power supply that can't handle the load. Games don't load your components at 100% - sometimes it's waiting on the CPU, sometimes in the GPU, so things even out at a rough 50-70% usually ( depending on the game ). Sometimes you encounter conditions when the load will go higher - the scene to draw is simple, another process kicks in on your CPU, ... And this is when your PSU puts itself in safe mode as it detected that it couldn't handle the load. In short, you triggered a protection feature on your power supply because it can't handle the load. There're two ways of fixing this : change your power supply to a higher rated ( and known brand !) one. Another way of tackling this is to lower the power consumption of your computer : undervolting your GPU, undervolting your CPU, lowering their frequency in the process if not enough. It'll cost you some performance probably, bit at least you won't reboot. If you can afford it, I recommend changing your power supply, as it is, in my opinion, one of the most critical components of your computer. It's feeding every pricy component with power, and if it fails, there's a possibility it won't go down alone ( even if there're protections as you experience them here).

2 of 5

2

This is a dead ringer for a power supply issue... I am pretty active on the EVGA forums and Corsair power supplies not being able to deliver the advertised wattage or just having general stability issues is a fairly common problem. The issue started to show up around the launch of the 2000 series GPUs from Nvidia and than with the 3000 series launch it kicked into overdrive. Ironically the issue seems to be more of a problem with there larger more expensive "high end" PSU than there cheaper units. I believe the issue to be caused by one of two things or a combination of the two... A lot of the "higher end" PSU from Corsair including the one that you listed use a multi rail system. Without getting too technical and diving into this too far... Basically your PSU can output 1000 watts total, but since it is a multi rail PSU, lets say two rails, each rail can only output 500 watts total. If you exceed this 500 watt limit on a given rail the PSU will shut down for safety reasons. In some cases I have seen in person that the Corsair PSU just cant output there advertised wattage. It is my belief that Corsair was taking advantage of there consumer by advertising there PSU as being able to output at one wattage when the actual output capability was far less. For the most part consumers were grossly over estimating the size of power supply they needed so Corsair was able to get away with this for a long time. However when the 2000 series and 3000 series GPUs launched an actual need for these 1000 watt power supplies developed thus exposing that Corsair PSU could not deliver. It appears from looking at the Corsair website that your PSU has a switch on the back of it that will allow you to disable the multi rail functionality. Yours may or may not have this... If that is the case I would disable it and see if that resolves the issue. As far as balancing the load across the two rails you will NOT be able to do this as Corsair does not provide the consumer with the information needed to be able to do it. Even if the above corrects the issue I would advise getting either an EVGA or Seasonic PSU at some point in the future. I do not recommend Corsair PSU to anyone at this point...

reddit.com › r › techsupport › comments › 6wi4qg › occt_power_supply_test_shutdown

r/techsupport - OCCT power supply test shutdown

August 28, 2017 -

Hello, My PSU had some coil whine and i heard that running some of the occt power supply strest test can make coil go away, and i tried it after like 3 secs computer shutdown and turns on but never make to BIOS, when i open the case i see led debug light for cpu and dram is light, is it possibly i fried my cpu and drams ?, when i checked cpu if there is any mark of fried sign i found none same for drams, but computer won't make to bios. i just got this new computer and now is broken. I'm so sad :(

My specs :

Ryzen 1700 3.0 Ghz G.Skill Flare X 3200 16gb Rx 480 Strix Gaming Gigabyte 750 h gaming psu it was 100 euros and it was 80 hold plus.

Please help me if u can.

Top answer

1 of 1

1

What psu is it?

reddit.com › r/occt › immediate restart upon power supply test

r/OCCT on Reddit: Immediate restart upon power supply test

June 24, 2024 - I decided to check out OCCT to test what the issue is. I set the timer for CPU+RAM to 5 minutes, and there wasn't a single error, so I decided to check out the power stability test, and it lasted under a quarter of a second before my computer restarted.

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 ?

Top answer

1 of 2

1

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.

2 of 2

1

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.

Find elsewhere

Google Bing Mojeek

reddit.com › r/overclocking › occt psu test

r/overclocking on Reddit: Occt psu test

June 20, 2020 -

Is it a good test to run and is it safe? Never used it before

Thanks

Top answer

1 of 1

1

Ok thanks! My psu is a good one corsair Rmi850 but i was just curious about it since its 4 years old

reddit.com › r/techsupport › occt psu power test reboots pc at random times

r/techsupport on Reddit: OCCT PSU Power Test Reboots PC at Random Times

September 7, 2021 -

Hi Everyone,

A month ago I upgraded my GPU to an 3080Ti from a 1080Ti. I played a lot of games with it at max settings without issues. The PC has been off for weeks, I recently started playing Car Mechanic Sim 2021 and after some time I noticed the PC just shut down and reboots randomly in this title.

I also play Cyberpunk 2077 and other titles but have not noticed these reboots there.

Event Viewer shows Kernel Power 41 BugcheckCode 0. Not much to go off on.

This lead me to download the stress test app OCCT after some research. I run OCCT Power Test and I get weird behavior:

Sometimes after I start the Power Test the pc makes a click noise, then reboots immediately.

I let the PC reboot back to windows and then I run the OCCT Power Test again. This time it runs fine for 30 minutes, 1hr, or as long as I let it go on.

I can do this several times and sometimes it will run, other times it will reboot the system like I mentioned above.

Its not the same behavior every single time I run the power test. But if the PC does reboot its definitely during the Power Test at random times, if this make sense.

GPU, CPU and Memory tests all pass without issues. Here's a screenshot of the power test under load:

https://imgur.com/a/ZvHFFU5

This leads me to think the PSU is getting tripped up during power spikes and the spikes seem to occur in OCCT and that game I experienced the reboot as well.

My specs are as follows:

Asus Z370E with a Core i9-9900k No OC

32Gb 4 x 8 DDR4 Corsair @ 2666mhz

NZXT Kraken X73 AIO

EVGA 3080Ti FTW3 Ultra No OC

Seasonic X-850 80 Plus rated PSU bought in 2017

Could my PSU be going bad slowly? I contacted Seasonic and they mentioned trying some troubleshooting steps like making sure connections are good ( they are). Updating drivers, etc.

Before I submit for an RMA, does this sound like a power issue? Why is it so random and only occurring in one game and the OCCT Power test randomly?

Top answer

1 of 1

1

Seems indeed like your PSU is going to safe mode. The fact that it is random can be caused by several things. First, occt or a game load aren't flat loads, you get spikes (even if small), on both the CPU and GPU. If those spike don't occur at the same time, your PSU won't go into safe mode. Once they occur at the same time, boom, the threshold has been met.

Also, you can have an external process kicking in, and if it takes additional resources by soliciting other components, you may get that tiny power increase that trips the protections.

Finally, by experience, the higher the temperature, the easier it is to trip those protections, so it might play a part here.

It's tough to say if your PSU is just undersized or going bad here, but there's no question with what you're describing that it's the issue. I would have said it is enough personally, even if it is close to the minimum wattage I'd go for, and for a similar setup, I went for a 1kW PSU, but I'm spending my time stress testing so I needed some headroom.

reddit.com › r/occt › occt power test causes instant bsod

r/OCCT on Reddit: OCCT Power Test Causes Instant BSOD

May 28, 2022 -

A couple years ago I built a PC (info below) and it ran great for about 18 months before it started crashing under heavy load (Event 41Kernel-Power). Long story short the power supply was the problem (Corsair RM850x) but Corsair quickly replaced it and it's been working fine since. Fast forward a couple months to today it's happening all over again. This time around I stumbled across OCCT and decided to try it out, so I went to: Test/System/Power/Play with default settings (until cancelled and Auto). Soon as the countdown pop up hit zero I got a blue screen. Tried again, same thing. Reverted all overclock settings (and memory timings) to factory settings and tried once more, same. Only difference this time is the test ran long enough for my cooling equipment to roar to life before shutting down ( roughly 10-20 sec +/-). Anyway that's where I'm currently at, any ideas?

I've been building my own PC's for about 20 years and never had a power supply go bad on me once, let alone twice in one build. Is this sorta thing common?

Anyway thanks in advance for any help, I attached a screenshot of my PC specs as seen from within the OCCT app, thanks.

Top answer

1 of 1

1

I've been having the same problem. Tried to run OCCT to check PSU because of certain app/game crashes but every time I click on it I get instant BSOD. The PC was running fine for 6 months and now I get these crashes. Were you able to solve your problem? Do you think it is strictly about PSU(mine is brand new)?

reddit.com › r › OCCT

OCCT - Help, Feature requests, Bug reports,...

September 28, 2020 - Welcome to r/OCCT, the subreddit dedicated to OCCT, the all-in-one stability checking tool that is heating your CPU/GPU/Memory/PSU since 2003. Come talk about OCCT, bugs, overclocking, feature requests,...

reddit.com › r › techsupport › comments › lcmuzt › rebootingblack_screen_power_supply_problem_on_occt

r/techsupport - Rebooting/black screen - "Power Supply" problem on OCCT

Hello, I recently bought a new pc but i'm starting to face some randoms reboots and blacks screens. I runned a "power supply" test on OCCT and it …

Steam Community

steamcommunity.com › discussions › forum › 11 › 4361249719400921855

Is it safe to use OCCT ? :: Hardware and Operating Systems

April 29, 2024 - So should I have gotten a new 1200 watt power supply instead of 1000 watt power supply? :( Hope not. My RTX 4090 recommended 850 watts. ... With that GPU + CPU + all the rest of the PC, that's like 900 Watts right there at full loads.

GitHub

github.com › occt-power-supply-test

OCCT Power Supply Test · GitHub

May 19, 2026 - OCCT download • OCCT power supply test • OCCT CPU test • OCCT GPU test • OCCT Linpack • OCCT monitoring • OCCT error report • OCCT VRAM • OCCT license • OCCT per hour • OCCT Windows • OCCT PSU • OCCT stability • OCCT graphs • OCCT HTML • OCCT forum • OCCT guide • OCCT SFF • OCCT AVX

reddit.com › r/buildapc › how to check if psu is fine ?

r/buildapc on Reddit: How to check if PSU is fine ?

June 29, 2018 -

I suspect my psu is dying on me because my pc restart (Kernel-Power Critical Error, unexpected shutdown) under heavy load (gaming and OCCT PSU test) but the voltages both the BIOS and Speccy (or HWMonitor or OCCT) display, while gaming or running a test, seems fine:
AVCC & 3VCC = 3.376V

VCCIN = 1.744

DRAM goes from 1.488 to 1.504

5V = 5.140V

12V = 12.120

How can i really check if it is my psu and not something else? I don't have a spare one to try, i could buy from amazon and return that if needed but i would prefer to avoid this.
Thank you for reading this :)

More Info:
I regularly clean my pc thoroughly
I already disconnected and reconnected all cables and graphic card
Both Windows and BIOS are updated
Nvidia drivers are up to date

Spec:
PSU is corsair CX750M bought september 2014
i5 4460 3.20Ghz
Nvidia GTX 750 Ti
Mobo MSI Z97-G43
OS is on a brand new Kingston SSD

Top answer

1 of 3

4

Voltage readings from BIOS and other software are worthless. I would try running MemTest, HDTune and various stress tests in order to isolate the issue. OCCT can stress GPU and CPU separately, try that. If you stress CPU or GPU and the results differs, that's a clue to whats wrong. If you have multiple ram sticks or multiple storage, might wanna try using just one of them at a time. Plus, did the issue start when you installed the brand new Kingston SSD by any chance?

overclock.net › home › forums › components › power supplies

OCCT power supply test. What does it do? | Overclock.net

August 14, 2009 - And no this "test" will not make the PSU draw it's rated max, it will just load it to the max your system will draw. A PSU will only supply what is needed. ... Sorry for necro (checked rules and seen none about it, personally i believe its better to revive old threads than make duplicates) but found this forum through googling OCCT blowing PSU's.

reddit.com › r/occt › how long should power test be able to run for?

r/OCCT on Reddit: How long should Power Test be able to run for?

April 23, 2023 -

My pc was (is) crashing (by which I mean not BSOD, just hard reboot, then RAM checks), so I took it to a repair shop (I have neither the tools nor time to fix it myself). I had run several tests because it was crashing when the GPU was maxed out in some applications, and so I tried several OCCT's tests, and then I got to the power test, which caused it to crash pretty reliably near the 3 minute mark.

They came back and said they'd run the OCCT stability test 3 times, and it was fine, and that there was software issues that they fixed (new GPU drivers and windows repair). I brought it home, ran it for a day, and ran the test again after that, and it crashed again. Windows event logs say WHEA error, but nothing else. Literally only the phrase "A fatal hardware error has occurred. a record describing the condition is contained in the data section of this event." Which is lovely, because I don't see any 'data section' or further info. The CPU temperatures got HOT under the power test (100c the entire test time).

I set the power test to run for 5 minutes. The shop said they got a stability certificate. Are they wrong? Is the issue on me somehow? The PSU is 1000w, which should be overkill for the i7 and 4070ti. I don't overclock, the DDR5 RAM is XMP'd to 6800 (it's own XMP, I didn't choose it or anything), but even when I dropped it to 5600, same result.

What do I do/test/try/complain about? Thank you in advance.

Top answer

1 of 4

3

To answer your headline, forever. Could it be your power outlet/circuit in your home? Do you have any other big devices on that circuit? Do you have a UPS (uninterruptible power supply)? I'm just thinking if it works in the shop, but fails at home, it might be the home. I assume all the individual stability tests get platinum certs, yes?

2 of 4

1

I pulled out the GPU, and it runs fine forever or as often as I like for it. Is it a bad PSU, or a bad GPU? How do I know?

Linus Tech Tips

linustechtips.com › computer hardware › power supplies

Can OCCT Ruin PSU's? - Power Supplies - Linus Tech Tips

February 13, 2022 - I was reading around that OCCT 'can' ruin PSU's. Is this true? I ran a voltage power stress test on my Corsair HX1000i and noticed all my temps sky rocket lol. Ran it for 5 minutes. My GPU and CPU got real hot. I'll post the screenshots. Not sure what AVX2 is. Maybe someone can explain?