Valve’s Steam Deck is a portable gaming PC that connects to the Steam library. The Steam Deck is similar to the Nintendo Switch except that, unlike the Nintendo handheld console, the Steam Deck will not force users into a closed system with little or no control over the operating system and installed software.
In an interview with IGN, Valve developer Pierre-Loup Griffays said:
The Steam Deck can pretty much-run anything you can run on a PC, and despite its portable form factor, it will still let you do things like alt-tab games and go to your web browser where you can watch the video.
IGN also claims that you can completely uninstall the pre-installed SteamOS operating system when using the device and replace it with Windows. This is most likely a performance degradation due to SteamOS being optimized for the Steam Deck.
We do not think that people should be tied to a certain direction or a certain set of software that they can install. If you buy a Steam Deck, it’s a PC. You can install whatever you want on it; you can connect any peripherals you want to it. It might be better to think of it as a small computer with a controller attached rather than a game console. Valve designer Laurence Young said.
Steam Deck will be available this December, starting at $ 399 for the 64GB version, $ 529 for the 256GB version, and $ 649 for the 512GB version.