AMD knocked it out of the park with its Ryzen series of mobile CPUs, but there's no question that its discrete mobile GPUs have been falling behind. The Radeon RX 7900M rights the ship by being just as powerful as the mobile RTX 4080 fur hundreds of dollars less.
My scar 17 R9 7945HX
At idle it was pulling 20 Watts
This all AMD machine idle power drain. so,damn high
Laptop CPUs typically target around 1W idle. 5W is more typical for the entire system. That results in around 11h battery life.