Plus a OS that takes more from the system, plus an abstraction layer similar to emulation.
I agree it will delivery very similar to PS4… most games in 1080p 30fps or 900p 60fps… or in Deck terms 800p 70-80fps… low/mid settlings like PS4.
No, the raw teraflops are aprox. like PS4 but this is using Zen 2, RDNA2 (so RT, VRS, vertex shaders..), 16GB of DDR5 etc. So will look way better than a PS4. Just compare this RAM to a PS4 or Series S.
In addition to this, due to the portable display being way smaller than a TV, the loss you get for getting smaller resolution and less detail is less visible than in a big tv.
I'm pretty sure we'll see (properly scaled/optimized on PC) games looking better on this portable display than on a Series S connected on a tv.
Tim's response to Epic creating their own OS...
Having Windows, Linux and SteamOS they don't need their own OS. And well, they have enough work with their store and games. In fact, I can see official SteamOS support coming for XBL, Epic Store, GOG, itch.io, Origin, Ubisoft Connect, Stadia, Luna, PS Now, etc. after a few months if they see it sells well, and maybe even day one some of them.