Its between your words and GN. And far more in the internet community trust GN.

I agree with this. But some people really still don't believe because it works for them. They proof that, hey I use some lower powered GPU and no issue it works. Well, it works until it didn't. Then they will be wondering why it died. It's hard to convince them but glad u made an effort.

Yes I did. And I just tried on a different system. It sparked and smoked... I guess its DOA. Going to ask seller for an exchange. Thanks for helping.

Trusting a brandname to be consistent is a real fallacy which most companies hope their customer to blindly rely on. This is why the PSU Tier List exist.

While Corsair higher end PSU are good quality stuff their basic & cheaper options are really just budget stuff with Corsair name tacked on. Your CV550 is a D tier rated unit only suited for igpu builds and you shoved a 3080 into it. LOL

Transient on 30series is a well documented issue and GN had done an indepth review on it


You can disgree but GN is a well trusted PC hardware reviewer and they present facts to back that up

A 3080 has transient that draws nearly the whole capacity of your 550W unit (which actually has a real capacity of 528W), what about the others like CPU, Mobo, RAM, fans & storage?


And this is what GN deduced from their investigation; the trip happen on the 12V which triggered OCP


Now see, good PSUs has good & complete protection. Cheap & budget PSUs typically lack full coverage and even if it stated to have OCP it may not be fully effective and overcurrent in the 12V rails could have passed on. Guess what, your GPU 8pin supply is directly connected to the PSU 12V rails.

This is the wattage unit GN reco to use. So its needed nearly 50% more than your 550W unit could handle!


Yes, you gotten a 750W A tier PSU but thats only AFTER shit happen isnt it? Its likely your GPU is ady killed before you upgrade to the 750W. And this is the bare minimum that GN recos you havent factored in if you will upgrade anything in the future or that PSU ages and thus its ability to handle "real" 750W will deteriorate with time. Mate, if you can afford a 750W A tier PSU, an 850W A tier unit isnt that much more costly.

I'm with you on this one. TS could have fried the 3080, and hence the system is not booting. Cheaper PSU regardless of wattage do not have good components that protect the hardware.

TS, try the gpu in another system see what happens. Does your mobo comes with any boot up lights?

Did the power supply or gpu "sparked and smoked"?

Right, an update. This is for the first GPU. I tried on another system (borrowed a friend's unused one). For the first few times, no fans spun, then after that, I could see sparks. No lights on the mobo to indicate anything... which is quite disappointing.

The second one ran for 2 hours+ (this is on the 750W PSU) before the system shuts down again (and wouldnt work as long as its with the 3080). Returning it again for either an exchange or refund, but honestly I dont know if I want to exchange for another unit as I dont know what the actual problem is.

Didnt I told you your GPU is likely killed dy? Its in the last sentence in mine quoted that you replied back. Now maybe even your friend PC might have something due to it. Tuu lah dont be so stubborn when people give advice.

Yeah you are right about that, but how about the second? I was not stubborn, I only disagreed but was waiting for the explanation. Not sure how you concluded that I did not want to listen when I already replied that I understood what you were conveying later. And no my friend's PC was not affected, because as I have said its an old one.

Anyway, I finally had some time to sit down and check about these shutdown issues. It seems that even at 850W, people reported shutdowns. That's a concern. So what is the safest? 1000W? 1200W? I am still yet to know why the GPU can "die" when others said they only needed to turn off and on the PSU for a reset.

Yeah you are right about that, but how about the second? I was not stubborn, I only disagreed but was waiting for the explanation. Not sure how you concluded that I did not want to listen when I already replied that I understood what you were conveying later. And no my friend's PC was not affected, because as I have said its an old one.

Anyway, I finally had some time to sit down and check about these shutdown issues. It seems that even at 850W, people reported shutdowns. That's a concern. So what is the safest? 1000W? 1200W? I am still yet to know why the GPU can "die" when others said they only needed to turn off and on the PSU for a reset.

I long gave up your case dy. You want to continue killing hardware because what happening did not suit your understanding, then go ahead laa. I dunno what to say you anymore.

You need to chill bro...

If it is so simple, I think this problem wont blew up last time. I remembered reading and watching the whole video by GN regarding the source of the problem. You just have to watch the video and try to understand that not all PSU are equally good despite being rated the same wattage. There's even a tier list for PSU back then but was not sure if it is still being updated.

Cut the story short... I think the problem lies within the 12v rails IIRC (been years since I watched the video). You see 500w does not mean a damn thing at all. Cheapo PSU usually dont offer single rail aka 500w x 1 rail. It is usually a combination of multiple 12v rails which adds up to 500w. This is where it normally caused problem. A higher tier PSU would have more headroom even if it was using multiple 12v rail. Therefore this alone is the reason why higher end GPU requires a high tier PSU to cope with the sudden power spike (say 300-400w). Hence that is why even a badly designed 850w PSU cant necessary support the required power output the GPU needs since the total power the GPU can draw from both 8pin and pcie is lower than what it needed.

As for why it would caused the GPU to fail... I can only guess that it may cause harm when you ran the GPU successfully in the first run. The GPU probably needed more power but PSU could not cope. Instead of a stable power delivery, the power delivery could be in the form of spike which could cause problem with electronic components.

Yeah for this I fully understand and admit its my error. However what I would like to know is the second case, perhaps Ill update on the first post. This does not involve the 550W PSU at all. I ran with a 750W, but the card exhibited the same behaviour.

That was what I was trying to ask, but some people would rather stay on the first case and not move on, as you can see from at least 2 here. Some people just love to step on the inexperienced, and especially desperate people like me. And these people have not even helped diagnose other possible errors.

I am here because I have a lack of knowledge on the 30 series, and I need help from the experienced. It's fine that people bash me for my naivety, and I was open to explanation (which I accepted), but at least move on...

I already explain liao, the multi rail 12v. 750w does not mean a damn thing if each rail only provide less than 150w.

You should read power supply reviews and see which psu can handle high load even with their multi rail design or find a PSU with single rail.

Ok chill I read everything and understood. Because the tier list states that Corsair RM 750e is a single rail PSU, and I have also confirmed with the seller that this PSU is good enough (for minimum), any other possible problems that you could think of? Unless you think that this PSU is still insufficient, then I would gladly love an explanation as to why it still isnt enough.

Also I forgot to say, for the final statement that you mentioned, it does make sense. Maybe Ill have it tested with a higher PSU to see if this problem continues to occur.

750w... but are u assuming that PSU all are 100 efficiency? Give or take 10-15%, what is left? 12th gen cpu how much power draw?

Are the pcie cables new?

750w... but are u assuming that PSU all are 100 efficiency? Give or take 10-15%, what is left? 12th gen cpu how much power draw?

Yep, new cables.