Apple is ridiculously far ahead of the competition in terms of performance per watt.
It looks like Apple's biggest lead is the TSMC node advantage and their ARM license. And they're not the only ones with access to TSMC fabs and ARM specifications...
That max wattage of the 3080 laptop variant (just the GPU) is ~5x of Apple's CPU and GPU combined.
For reference, I'm using OpenCL and raster benchmarks from Blender to draw my comparison. Seems like the fairest common ground: https://browser.geekbench.com/opencl-benchmarks https://opendata.blender.org/benchmarks/query/?group_by=devi...