AMD detailed some of the enhancements built into the new Ryzen 4000 APUs that potentially lead to better battery life compared to Intel Ice Lake-powered laptops. AMD focuses on improvements to the system management controller and how it plays well and gathers telemetry from other system components to ensure quick ramp-ups and ramp-downs, longer idle times, and lesser transition between intermediate power states.
https://www.notebookcheck.net/AMD-details-Ryzen-4000-battery-life-optimizations-better-system-awareness-leads-to-increased-run-times-compared-to-the-Core-i7-1065G7.457627.0.html
Promising numbers! It seems the usual trolls weren't drawn to this particular article... ???