Miner comparison
Antminer S21 Pro 234T vs Antminer S21 XP
Both are air-cooled Bitmain Antminer models for SHA-256 (Bitcoin) mining, in the same size class (about 450 × 219 × 293 mm), on the same 220–277 V AC supply drawing up to 20 A, and both rated at 76 dBA.
The difference is efficiency. Bitmain rates the S21 XP at 270 TH/s on 3,645 W (13.5 J/TH) and the S21 Pro at 234 TH/s on 3,510 W (15 J/TH). The XP gives about 15% more hashrate for about 4% more power, so each terahash takes 10% less electricity. At full load the S21 XP uses 87.5 kWh a day and the S21 Pro 84.2 kWh.
Which one returns its cost sooner depends on your electricity price and on the price difference between the two: the table below and the calculator work it out with current network data.
Figures: Bitmain's S21 Pro and S21 XP specification pages, checked 7 October 2026. They are typical values; Bitmain states the hashrate varies by ±3%.
| Compare |  Bitmain Antminer S21 Pro 234TAvailable |  Bitmain Antminer S21 XPAvailable |
|---|---|---|
| Price | ||
| Price | $1,709.05 | $2,944.05 |
| Price per TH/s | $7.30/TH | $10.90/TH |
| Condition | New | New |
| Specifications | ||
| Hashrate | 234 TH/s (±3%) | 270 TH/s (±3%) |
| Power consumption | 3,510 W (±5%) | 3,645 W (±5%) |
| Efficiency | 15 J/TH | 13.5 J/TH |
| Algorithm | SHA-256 | SHA-256 |
| Input voltage | 220–277 V AC | 220–277 V AC |
| Electrical phase | Single-phase | Single-phase |
| Cooling type | Air-cooled | Air-cooled |
| Noise level | 76 dB | 76 dB |
| Dimensions (L × W × H) | 450 × 219 × 293 mm | 450 × 219 × 293 mm |
| Net weight | 18.5 kg | 18.7 kg |
| Operating temperature | -20–45 °C | -20–45 °C |
| Operating economics | ||
| Electricity cost / day at $0.06/kWh | $5.05 | $5.25 |
| Est. revenue / day | $8.31 | $9.58 |
| Est. net / day at $0.06/kWh | $3.25 | $4.34 |
| Break-even electricity price | $0.099/kWh | $0.110/kWh |
Green marks the better value in a row (higher hashrate; lower power, J/TH, noise, weight, price and electricity cost). Specifications are as recorded for each product; “—” means the value is not stated. Economics are estimates at network conditions of 2026-10-28, $0.06/kWh, 2% pool fee and 100% uptime, and are not a forecast of earnings.
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