1)Battery capacity/ life/health 2)External body/chasis/hinges/overall build quality 3)ports/charger 4)Fan number/ location 5)Ram type ddr3/4/5, size , expandable upto how, 6) processor type/core/generation/, base speed, max clock speed 7) graphics manufacturers/ size/type/integrated or dedicated/ generation 8)storage hdd or ssd/size/manufacturer/ 9) number of cores.... 10) Webcam quality 11)screen size/resolution