Valve’s latest preview update for the Steam Deck’s SteamOS, version 3.5.1, is largely a patch for bugs but includes one big ticket feature enthusiasts have been clamoring for: undervolting. This is thanks to the version 118 BIOS firmware that this preview update also introduces, and while it gets rid of the old overclocking settings, undervolting

Source: Hot Hardware – Steam Deck Is Getting Undervolting Controls, Here’s How To Access Them Now