Does a power cut really damage a GPU if cooling fans stop?
Asked by
GamerDude42
I bought a used gaming PC from a friend and I'm considering not getting an uninterruptible power supply (UPS) since I've already spent a lot. I've read online that a good surge protector should be fine for protecting the PC hardware. I don't care much about software issues; I can always format and reinstall Windows if needed. My friend told me that if the power goes off while the GPU is still hot, the cooling fans will stop, and this could fry the GPU. Is that actually true? How hot can a GPU get? I think my friend might just want to sell me his UPS because he isn't building another PC. My setup includes a Ryzen 5 3600, GTX 1060 6GB, 16GB DDR4, RGB fans, a 512GB NVMe, and a Corsair case. I'm worried about frequent power cuts in my area, so I guess I'd need something like a 1000VA UPS to be safe.
Answers
Nah, your friend is mistaken. When the power cuts out, the GPU also turns off, so it isn't generating any heat anymore. The fans stop, but that doesn’t matter since the GPU isn’t active.
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Right? The heat is only produced while the GPU is powered on. Once it loses power, it stops generating heat. Also, with the GPU fans spinning for just a moment after power loss, they'll help disperse any minor remaining heat.
CoolTechGuy: Good explanation, so my friend is BSing, thanks mate.
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If losing power was that harmful, we'd be hearing tons of stories about people ruining their hardware by just flicking off the switch instead of shutting down properly. It's really not common, so you should be fine.
SureThing45: Yeah, that makes sense, thanks for the info!
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A UPS is nice to have, but it's not required. Just make sure to shut down your PC properly. The biggest risk comes when power comes back on—it's safer to unplug to avoid spikes. Especially in storms, better to be safe and unplug during those.
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CuriousMind84: So he was just lying like I suspected, thanks for the info!