
These options are all as simple as pressing the Quick Access button (located below the right trackpad) to bring up the Performance and quick menu overlay. To keep the heat down and increase battery life on the go, Valve has implemented system-wide limiters to limit the TDP from 3-15W at a push of a button as well as the option to set a manual fixed GPU clock or even artificially limit the frame rate to 30 FPS across the board.

To power that 800p display, the Steam Deck is powered by a Zen 2 'Aerith' CPU that can put out up to 3.5Ghz across four cores and a 'Van Gogh' GPU that operates up to 1.6Ghz across 8 CU.

I'd take a locked 60 frames per second on an 800p screen over a fluctuating 45-50 fps on 1080p any day of the week. Honestly, the level of performance that the Steam Deck puts out across the array of titles I've tested makes me glad the resolution is set the way it is. There will always be the naysayer asking why Valve didn't go with a 1080p IPS screen. At a glance, the Steam Deck is an impressive piece of hardware crammed into a portable device with a 7" touchscreen that caps out at 800p.
