Steam Deck come with a 7-inch IPS touchscreen with a 1280 x 800 resolution (with a 16:10 aspect ratio. Like a standard television or productivity laptop, the screen runs at 60 Hz
On Steam Deck, your games run on a different operating system than the one on your desktop PC. It's a new version of SteamOS, built with Steam Deck in mind and optimized for a handheld gaming experience.