Antminer S21 XP
Bitcoin miner from Bitmain. The efficiency pick of the air cooled S21 generation. Standard deployment on rack shelves, no liquid infrastructure and wide PSU availability.
About the Antminer S21 XP
The Antminer S21 XP is the efficiency pick of Bitmain's air cooled S21 generation. It runs at 270 TH/s on 3,645 W, which is 13.5 J/TH, and comes in a single factory version. It needs a tenth less energy per terahash than the S21 Pro, and it is among the most efficient air cooled SHA-256 machines in our catalog; Bitmain's newer S23 does better still.
It runs on single phase supply at 220 to 277 V and uses about 87.5 kWh a day per unit. No liquid infrastructure is involved: the unit sits on standard rack shelves, and the site provides airflow and heat exhaust, hot and cold separation, and sound insulation near housing, since it runs at about 76 dB. The rated range is 5 to 45 °C ambient. Each unit measures 449 × 219 × 293 mm and weighs 18.7 kg; replacement power supplies are widely available.
Specifications
Manufacturer reference values, confirmed per batch on the quote.
Scope of delivery
- The miner with integrated PSU
- Original manufacturer packaging
- Serial numbers per unit and warranty reference
- Airflow and heat exhaust
- Hot and cold separation
- Sound insulation near housing
- Power cords and PDU
Air cooling. The simplest of the three routes and the lowest infrastructure cost. Sustained ambient above the rated range derates performance, so size the exhaust for the warmest week.
Energy only: 3,645 W rated power, 24 hours, one unit. Cooling overhead and PSU losses not included; no revenue assumptions.
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How efficient is the Antminer S21 XP?
Which coins can the Antminer S21 XP mine?
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What warranty comes with the Antminer S21 XP?
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Read before you buy the Antminer S21 XP
What to buy at your power price: a shortlist by cents per kWh
The same catalogue produces four completely different shortlists depending on one input. Find your band and the hardware question mostly answers itself.
The best ASIC miner for a small site, one to twenty machines
Small deployments have constraints large ones do not: a fixed electrical supply, neighbours within earshot and nobody on site to fix things. The right machine follows from those, not from the efficiency table.
The breakeven power price, and why we ask for yours first
Every machine has an electricity price above which it stops making money. Work that number out and most of the hardware decision answers itself.
Compared with related models
The closest machines by condition, algorithm, manufacturer and cooling.
