I just got a new laptop with the AMD Ryzen™ AI 9 HX 370, and am getting my arch linux install up and running. So far color me impressed on the battery life side. 12 cores with ~10+ hours of battery, activity dependent, i mean it could probably sit idle on the desktop for close to 20. For reference though i don’t have a recent comparison point, i’m upgrading form the zen 1.5 r5 5500u. If your running any amd processor and want to get the most performance or power saving out of your processor i highly recommend running the amd p-state driver on linux, it allows linux to match and even beat windows when it comes to efficiency. To me its wild that a 16inch laptop off the charger can have a reported power draw from the battery of sub 5 watts while typing this in a browser.
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