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Steam Deck Undervolting Tested: Boosting Battery Life And Performance(hothardware.com)

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steal_your_face@lemmy.ml
6 points

Am I reading this right? The games performed better with less power? Why?

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kadu@lemmy.world
14 points

Undervolting aims to keep the same performance at a lower power draw. But because modern SOCs scale their frequency dynamically based on temperature, a lower voltage means slightly better performance

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steal_your_face@lemmy.ml
4 points

Oh interesting. Makes sense. Any idea why they don’t tune it like this from the factory? Stability?

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kadu@lemmy.world
9 points

Yes. Essentially, every chip coming out of the fab will be slightly different, so you need to find a voltage curve that works for all of them. Some will be able to work with - 50mv, some -15, some won’t work at all unless they’re right at that factory defined voltage.

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ylai@lemmy.mlOPM
9 points

Undervolting provides the chip with additional power and thermal headroom, and can improved situations where otherwise throttling sets in.

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David_Eight@lemmy.world
3 points

Think of amps and volts like a hose and water. If you put your thumb over the hose the water shoots out faster. Undervolting works in a similar way. So the goal is to lower the volts but maintain or even increase the amps to improve performance.

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