Source is this video:
Windows Was The Problem All Along - Dave2D
We could obviously compare performance between windows and steamOS before on the steam deck, or between windows and Bazzite on other handhelds. But this is the first time we have had official windows and SteamOS builds for the same hardware.
Valve did a lot of work to tune the APU in the steam deck for efficiency. It’s custom silicon at the end of the day.
AMD just kinda took one of their existing laptop APUs and threw it into handhelds instead of laptops.
The Deck also has a weaker but lower wattage chip and worse display, that makes a big difference.
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