Deere 848L is 3 ft 2 in longer than Deere 640H — 27 ft 9 in vs. 24 ft 7 in, a 13% difference.
Deere 848L stands 1 ft 1 in taller than Deere 640H: 11 ft 4 in vs. 10 ft 3 in.
Deere 848L weighs 61% more than Deere 640H: 49,349 lb vs. 30,625 lb.
Deere 640H runs 185 hp; Deere 848L runs 281 hp.