shut down

hold down volume up and power back up into BIOS

go to setup

go to advanced

go to the bottom and select your undervolt

you can get between 5~8% improvement in performance, for free. Or longer battery life when frame rate limited.

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The maximum undervolt you can pick is -50mv which is pretty safe, not only is this small change unlikely to affect stability, it’s basically impossible you’d be unable to boot with -50mv, so you can always easily change it back if you don’t want to. Even if you somehow cannot boot, there’s a way to reset this without having to boot, you’re basically 100% safe.

So what’s the worst that could go wrong with this? Worse case scenario is instability, which can cause the game or the entire system to crash. And since we’re talking worse case scenario, if this happens during a system update or something, that could corrupt your system and you might have to reinstall the OS or something. So probably don’t experiment with this with a system update.

A bad but better scenario, is you’ve undervolted too much but still within the capability of the power management circuit to compensate, it compensates this by downclocking, which will reduce performance. So the way Zen2 works when you undervolt, is at first you get improved efficiency/performance. And then if you keep going too far, you get reduced performance from the automatic down clocks, and then if you still keep going too far, it will start to become unstable, so potential crashes.

But again, -50mv is VERY small, I think even with the worst silicon lottery draw, you only go into the reduced performance territory, I don’t think anybody will start crashing, not with a new device. (silicon quality can gradually degrade over many years)