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power throttling

TortillaQuemada
By TortillaQuemada
in Graphics Cards
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Posted

If the GPU wasn't getting enough power it would not turn on lol. 

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14 minutes ago, DrMacintosh said:

If the GPU wasn't getting enough power it would not turn on lol. 

no not always.

sometimes it can hit a power limit and throttle, and if your 12v rail is outputting 11.5v, it might be getting less electricity than expected, but it will still turn on.

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Posted

Either temperature limits or power limits

QUOTE/TAG ME WHEN REPLYING

Spend As Much Time Writing Your Question As You Want Me To Spend Responding To It.

If I'm wrong, please point it out. I'm always learning & I won't bite.

 

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Lenovo Yoga 7 Air: Ryzen 7840S, 32GiB DDR5

 

Desktop (Old but I never replaced it):

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Posted

This...

You can see the power consumption is the same but the core clocks are affected because VRAM clocks changed which resulted in less power for GPU core.

clocks.png.07b49128171bc8f8d2a0f257f27ad914.png

 

On NVIDIA cards there is current sensing and there is max power limit set in the BIOS so every time your card approaches the max power limit the card will lower it's voltage and clocks for a moment to not exceed the power limit.

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