Except for their low draw and thus unmatched battery life on portable devices, the M chips are honestly not impressive performance wise. Not really the appeal, even tho Apple is trying tooth and nails to pretend that that's a selling point with their unlabeled graphs.

I mean if you really don't want a GPU (which IMO is a must, given proper hardware acceleration which makes up for any CPU short comings, but I digress), that leaves you with a much bigger budget for the CPU, and now it's no longer close enough to the M chips, but an absolute slaughter.