this post was submitted on 09 Dec 2023
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PC Master Race

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What happens if you turn on the PC without plugging the power cable for the GPU? (lemmy.world)
submitted 11 months ago by 0Xero0@lemmy.world to c/pcmasterrace@lemmy.world
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So I was changing the case fans, after I put everything back together, I forgot to plug in the power for the GPU. I turned the pc on and I saw the white LED on GPU power port lid up and heard the fan spins like crazy (I don't know if it was the CPU fan or the GPU fans), I panicked and immediately turned off the power supply.

Everything happened in less than 2 seconds, I've run some stress tests and gamed for a few hours and nothing bad happened (yet?) so I assumed everything is still fine (for now?).

What happens if I had left it on like that for longer? And why did the fan ram up like that?

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[–] Scubus@sh.itjust.works -3 points 11 months ago (2 children)

It's not the CPU that contains the integrated graphics, it's the mobo. Do you know what mobo you use?

[–] gazter@aussie.zone 1 points 11 months ago (1 children)

Do you have a source for that? I've only ever known integrated graphics to be part of the CPU.

[–] Scubus@sh.itjust.works 3 points 11 months ago

Did I just step into the Twilight zone?

I just confirmed that you are correct, but I am positive that both of the mobos I bought in the last decade had graphics cards built into them. I have legitimately no idea how I'm only just learning that that's not normal.

Thanks for letting me know

[–] 0Xero0@lemmy.world 1 points 11 months ago (1 children)

Gigabyte B660M DS3H DDR4. I've already tried plugging it in, which I don't even need to, and lo and behold, no output to the monitor. Like I already said, how do you even get video out from a CPU that has no iGPU?

[–] Scubus@sh.itjust.works 2 points 11 months ago

Ignore everything I said, evidently I am an idiot