Technical Specifications
| Hashrate | 473 TH/s |
|---|---|
| Power Consumption | 5,676 W |
| Efficiency | 12 J/TH |
| Algorithm | SHA-256 |
| Mineable Coins | Bitcoin , Bitcoin Cash |
| Noise Level | 45 dB(A) |
| Cooling | Hydro (liquid cooling — requires LDU) |
| Dimensions | 400 × 195 × 290 mm |
| Weight | 17.5 kg |
| Release | 2024-Q3 |
| Approx. Price | ~$12,000 USD |
Mining Profitability in 2026
The Bitmain Antminer S21 XP Hyd can be pointed at different algorithms and coins. Use our individual coin calculators with the hashrates listed in the table above:
Break-even tip: Enter the approximate price of this unit (~$12,000) in the hardware cost field of the calculator to see your estimated days-to-break-even based on current network conditions.
Pros & Cons
Pros
- Highest single-unit SHA-256 hashrate available (473 TH/s)
- Same 12 J/TH efficiency as the air-cooled S21 XP
- Near-silent operation (~45 dB) — noise managed by the liquid loop, not fans
Cons
- Requires Bitmain-compatible Liquid Distribution Unit (LDU) — significant extra cost
- 5,676 W draw demands serious electrical infrastructure (25+ A at 220 V)
- High acquisition cost (~$10,000–$14,000 per unit) limits accessibility
Frequently Asked Questions
What infrastructure does the Antminer S21 XP Hyd require?
The S21 XP Hyd requires a compatible Liquid Distribution Unit (LDU) — Bitmain sells its own, and third-party LDUs are available from specialist suppliers. The LDU circulates temperature-controlled coolant through the miner's internal heat exchangers. You also need a high-capacity chiller for the coolant loop, a dedicated high-amperage electrical feed (typically 25–32 A at 220 V per unit), and proper plumbing for the cooling circuit.
Is the S21 XP Hyd worth the premium over the air-cooled S21 XP?
Per unit of hashrate, the Hyd and air-cooled S21 XP have identical efficiency (12 J/TH). The Hyd's advantage is density: one Hyd unit delivers the hashrate of ~1.75 standard S21 XPs in the same footprint — valuable in space-constrained facilities. It also runs near-silently and generates less ambient heat. The premium makes economic sense only if you have existing hydro-cooling infrastructure or are building a high-density facility.
How does the S21 XP Hyd compare to immersion cooling?
Hydro cooling (closed-loop liquid cooling through the ASIC's internal channels) and immersion cooling (submerging the unit in dielectric fluid) are different approaches. Hydro cooling is Bitmain's proprietary solution for the XP Hyd — units cannot be immersed in standard dielectric fluid. Immersion cooling typically uses standard air-cooled ASICs or purpose-built immersion variants (like MicroBT's M60S+). Both achieve similar acoustic and thermal benefits.
Is the S21 XP Hyd profitable in 2026?
At electricity rates below $0.08/kWh, the S21 XP Hyd's 12 J/TH efficiency makes it one of the most resilient Bitcoin miners in 2026. At 473 TH/s, daily revenue substantially exceeds the air-cooled S21 XP — but the infrastructure cost (LDU, chiller, plumbing) must be amortised into ROI calculations. Use our Bitcoin mining calculator with 473 TH/s and 5,676 W for raw profitability, then factor in your cooling infrastructure cost.
Where to Buy
The Bitmain Antminer S21 XP Hyd is available from:
- Bitmain Official Shop — shop.bitmain.com (new units, with warranty)
- MinerBros — authorised reseller, ships globally
- Kaboomracks — US-based reseller, new and refurbished
- eBay / secondary market — used units, verify hashrate stability before purchasing
Price estimates on this page are approximate and subject to market fluctuations. Always compare prices from multiple sellers before purchasing.
Compare the Bitmain Antminer S21 XP Hyd
See how the Bitmain Antminer S21 XP Hyd stacks up against other miners that can mine the same coins — hashrate, power draw, efficiency, and profitability side by side: