John Deere 644D vs John Deere 850B

Verdict: John Deere 644D vs John Deere 850B

The John Deere 644D and the John Deere 850B are both industrial tractors — here is how they stack up on the figures that matter. John Deere 850B leads on rated power with 175 hp against 165 hp. John Deere 644D is the lighter machine (13,299 kg vs 37,515 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. In short: choose the John Deere 850B for outright pulling power, or the John Deere 644D if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.