This is one of my favorite Mainboard re-use projects. Swapping in a Ryzen 7840U Mainboard, it should actually be able to play most game titles at better than Steam Deck performance.
Would be interesting to see if it actually gets better performance. On paper, it should, but famously when you control the entire stack it's easier to optimize so software and hardware works well together, and that's exactly what Valve has with the Steam Deck.
You'd think so, but as a counterpoint, may I present the Microsoft Surface
Please do not, absolutely worst laptop I've ever owned, even if Linux worked perfectly fine and ran better than Windows on it...
indeed. and it's why in certain areas the steam deck can do better than counterparts like the ROG Ally