This is why I recommend against using a 10 year old PSU for a new build.

DanNeely

Supreme [H]ardness
Joined
Aug 26, 2005
Messages
4,319
Yeah, I know that's how it's supposed to work, but the point is... I have seen low-end motherboards struggle with high-end graphics cards before, and seen power supplies that can run a card in one motherboard not able to keep it powered on another. Maybe there's some other reason and it's not the power delivery or the VRM, perhaps I was wrong on why it doesn't work. It could be some other aspect of the design, like lane speed or how many layers the PCB has, I really don't know... but I still am convinced it's not a good idea regardless of the fact that it should theoretically work.
Should not, and do not aren't always the same thing. The AMD RX480 series at release drew signficantly more than the 65W of 12V from the mobo they're allowed to. The total for an x16 is 75W, but 10W of it is 3.3v power (to facilitate porting legacy parallel PCI devices which ran on 3A@3.3V power).

This article I found from Toms shows a card they tested drawing an average of 85W of 12V through the slot with short peaks as high as 168W. This originally came to light after a few people with low end mobos actually burned out PCIe slots due to over-current while gaming. AMD eventually released a driver (firmware?) update that reconfigured the cards to draw more power though the PCIe power connectors and less from the mobo.

https://www.tomshardware.com/reviews/amd-radeon-rx-480-polaris-10,4616-9.html

https://www.reddit.com/r/Amd/comments/4qwzpy/three_motherboards_and_counting_have_died_from/
 

HockeyJon

[H]ard|Gawd
Joined
Dec 14, 2014
Messages
1,690
Good question. I'm no electronic engineer, however, I've read somewhere that PSU's can become less efficient over time. It was manufactured by a Seasonic, however, it was a bronze version. So it's possible I started with less wiggle room for wear and tear. (I.E. countless hours of FFXI and WoW, lol.)

Being "bronze" really doesn't matter a whole lot when it comes to that kind of failure. My last PSU that failed was a bronze. It simply stopped working, that was it. 80 Plus is an efficiency rating, it's not necessarily an indication of PSU build quality. You can get a "bronze" PSU that is significantly better built than a "gold" PSU, but just less power efficient.

Given your system stats, it wouldn't surprise me if the PSU got overloaded, which would really have nothing to do with the 80 Plus rating and a lot to do with how well it's designed to handle that. You were running an RTX 3080 on a 650W PSU. Nvidia recommends no less than a 750W PSU. I know people who are running them ok on a 650W high quality PSU, but it also depends on what else you have within your system that would be consuming power. If your system is otherwise fairly low power draw, you can possibly get away with it. I don't know enough about everything in this particular case, but one thing that stands out to me right away is that you were using a power supply that was below the recommended specification for at least one of the components in your system, which was also the component that happens to have the highest power draw.
 

Strange bird

Limp Gawd
Joined
Feb 19, 2021
Messages
400
I have a corsair tx 650w on rtx 3060 and ryzen 2700x, I think the power supply is over 10 years old or thereabouts, it's possible that I got it as a claim for the same, but I can't remember exactly now.
 

Wade88

Gawd
Joined
Jun 21, 2015
Messages
847
Regarding pet hair I heartily recommend the metro datavac canned air alternative. It keeps the filters clean in all of our computers via removing them once a month and hitting them with the machine. We have two of them per residence.
 
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