I'm more concerned about how much power it might need to consume in order to beat the Z1 Extreme. The Asus Ally and Steam Deck aren't exactly super performant parts, but they're portable, and that means battery life and power are key factors.
I've done some testing with Steam Deck and it can run for about five hours straight while playing a lighter game like Hollow Knight. With a 42Wh battery, that means the whole device is only using around 8.4W. Now, granted, playing a 3D game the power use will shoot up a lot, but how will Meteor Lake compare?
The Arc A380 isn't exactly a power friendly GPU, using around 85W with my test card. We're basically looking at potentially A380 performance (give or take), with shared memory, in a 20–35 watt package. That could be some seriously short battery life.