
Intel Panther Lake delivers a credible laptop performance leap
Ars Technica tests the Asus Zenbook Duo UX8407 powered by Intel Core Ultra X9 388H (Panther Lake) and finds a substantial, well-rounded upgrade: strong CPU and GPU performance, notably better efficiency, and solid battery life for a dual-screen laptop. Panther Lake appears to be Intel’s best laptop CPU in years, with Copilot+ support and a clearer, more unified feature set, though supply constraints and the two-screen form factor temper short-term enthusiasm. The long-term question is whether this marks a stable, repeatable turnaround for Intel or a rare standout in a period of ongoing iteration.








