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 Second-hand GPU doesnt work, help needed

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andrekua2
post Mar 17 2024, 09:38 PM

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QUOTE(Minimalist2022 @ Mar 17 2024, 10:58 AM)
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.
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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.

This post has been edited by andrekua2: Mar 17 2024, 09:40 PM
andrekua2
post Mar 18 2024, 09:02 AM

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QUOTE(Minimalist2022 @ Mar 18 2024, 08:19 AM)
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...
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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.
andrekua2
post Mar 18 2024, 09:55 AM

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QUOTE(Minimalist2022 @ Mar 18 2024, 09:41 AM)
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.
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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?

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