Antminer S19 XP vs S21 Pro: Which One Actually Pays You Back?
The used S19 XP returns capital faster below 5.5 c/kWh; above it the new S21 Pro wins. Break-even, payback and the 208 V trap, with the assumptions shown.
July 29, 2026
The used S19 XP returns capital faster below 5.5 c/kWh; above it the new S21 Pro wins. Break-even, payback and the 208 V trap, with the assumptions shown.