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Steam Deck Undervolting Tested: Boosting Battery Life And Performance
(hothardware.com)
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this post was submitted on 18 Nov 2023
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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
Oh interesting. Makes sense. Any idea why they don’t tune it like this from the factory? Stability?
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.