At a Best Buy near you, a 13-inch machine that resembles a tablet more than a gaming rig is quietly challenging a decades-old assumption: that serious gaming requires a separate, power-hungry graphics card. The Asus ROG Flow Z13, now marked down $900 to just under $2,100, carries AMD's Ryzen AI Max+ 395 processor — an APU whose integrated graphics rival dedicated GPUs that once defined the category. It is a small but telling sign that the architecture of portable computing is being renegotiated, and that power and portability are no longer the trade-off they once were.