Bitmain Antminer S21 (200Th)
Quick answer
The Bitmain Antminer S21 (200Th) is a Bitcoin miner rated about 200 TH/s at roughly 3,550 W (about 17.8 J/TH). An industrial-class unit — loud and power-hungry, best suited to a dedicated mining space, not living areas.
Professional-Grade Miner
This miner draws 3,550W and produces 75+ dB of noise — it is designed for dedicated mining environments, not living spaces. Professional-grade miners deliver the highest hashrate and revenue per unit but require proper infrastructure: a 240V circuit, adequate ventilation or exhaust ducting, and a space where noise is not a concern (garage, basement, warehouse, or outdoor enclosure).
For home miners looking for a quieter alternative, consider our Bitcoin Space Heater builds or explore open-source miners like the Bitaxe that are purpose-built for residential environments.
Profitability Calculator
| Period | Revenue | Electricity Cost | Profit |
|---|---|---|---|
| Daily | $7.86 | $5.96 | $1.89 |
| Weekly | $54.99 | $41.75 | $13.24 |
| Monthly | $235.68 | $178.92 | $56.76 |
| Yearly | $2,867.44 | $2,176.86 | $690.58 |
Heating offset estimates the value of heat replacing an electric space heater during heating season (~6 months/year in Canada). Actual savings depend on your heating setup and climate.
Where to Buy the Bitmain Antminer S21 (200Th)
D-Central Technologies
CanadaBitcoin Mining Hackers since 2016. Ships from Montreal, Quebec.
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United StatesWide selection of new and used ASIC miners. US-based shipping.
Shop NowFull Specifications
| Model | Bitmain Antminer S21 (200Th) |
|---|---|
| Model Number | Antminer S21 (200Th) |
| Manufacturer | Bitmain |
| Algorithm | SHA-256 |
| Coins Mined | Bitcoin (BTC) |
| Hashrate | 200 TH/s |
| Power Consumption | 3,550 W |
| Efficiency | 17.8 J/TH |
| Dimensions | 400 x 195 x 290mm |
| Weight | 14.2 |
| BTU Output | 12113 BTU/hr |
| Equivalent Heater | Equal to a 3,550W space heater |
| Daily Power Cost | $5.96/day |
| Monthly Power Cost | $178.92/mo |
| Circuit Requirement | 240V circuit required |
| Release Date | 2024-03-01 |
| MSRP | $1,075.83 |
| Status | Active |
Custom Power Profiles
No air-cooled operating points are published for this model.
This bin never had an independent dataset. The rows previously published here were a slice of the S21 Hydro set, not an air-cooled extraction. Rather than republish another configuration's numbers under this model name, we publish nothing for it. When a set traceable to this unit exists, it will appear here with a status.
The honest way to tune this model today: set a watt target in your firmware and let the autotuner derive the rest. Frequency and voltage are calculated at runtime by the firmware autotuner, never fixed presets, so a watt target needs no published envelope.
Tuning status for this model · Models we do publish operating points for
Tuning envelope Unknown
Envelope status: Unknown — no model-specific extraction set exists for this SKU; the catalog table above shows reference scenarios only, not verified points for this unit.
Home Mining Assessment
The Bitmain Antminer S21 (200Th) is a SHA-256 cryptocurrency miner manufactured by Bitmain. It delivers a hashrate of 200 TH/s with a power consumption of 3550W, achieving an efficiency of 17.8 J/TH.
Weighs 14.2 kg, measures 400 x 195 x 290mm.
With a home mining score of 8/100, this miner is best suited for dedicated mining spaces for residential use. It produces 12113 BTU/h of heat output, making it effective for supplemental space heating.
At 17.8 J/TH, the Bitmain Antminer S21 (200Th) sits in the current-generation efficiency tier, competitive with modern SHA-256 hardware (roughly 13-19 J/TH).
Its waste heat (around 12113 BTU/h) can be ducted into a room, turning money you would otherwise spend on heating into hashrate.
View detailed specifications, real-time profitability calculations, and comparison data for the Bitmain Antminer S21 (200Th) in our comprehensive ASIC miner database.
Broken miner? Get a real quote.
Tell us the symptom and get an instant repair-tier estimate ($95 / $145 / $195 CAD). Mail-in from across Canada, bench in Montreal, Quebec.
Send it to D-Central — start a repair →Antminer S21 specs, repair, and parts
Use the S21 cluster to connect current-generation specs, buying options, chip-level parts, troubleshooting, and repair support.
- Antminer S21 specs
- Bitmain Antminer S21
- Bitmain Antminer S21 Pro
- Bitmain Antminer S21 XP
- S21 maintenance guide
- S21 hashboard troubleshooting
- BM1370BC S21 Pro chip
- Bitmain APW PSU reference — which APW ships with which Antminer, watts and input voltage
- Compare S21 miners
- Confirm chip count, voltage domains, fitment
- Full per-model repair BOM
- Match firmware to this model
- Which firmwares run on this control board — factual support matrix
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Compare the Bitmain Antminer S21 (200Th)
Frequently Asked Questions
What are the current mining economics for the Bitmain Antminer S21 (200Th)?
At $0.07/kWh electricity, the Bitmain Antminer S21 (200Th) currently shows an estimated $1.89 daily net result before pool fees and hardware cost. Results depend on your electricity rate and Bitcoin network conditions. Use the calculator above with your actual electricity rate.
Can I mine Bitcoin at home with the Bitmain Antminer S21 (200Th)?
The Bitmain Antminer S21 (200Th) has a home mining score of 8/100. With 0 dB noise and 3,550W power draw, it may require a dedicated space like a garage, basement, or outdoor enclosure. Consider noise insulation and proper ventilation.
Can the Bitmain Antminer S21 (200Th) heat my home?
The Bitmain Antminer S21 (200Th) outputs approximately 12113 BTU/hr of heat. For reference, a typical space heater produces 5,000-5,500 BTU/hr. All electrical energy consumed by the miner is converted to heat, making it 100% efficient as a heater. D-Central offers Bitcoin Space Heater builds designed specifically for home heating integration.
What power supply does the Bitmain Antminer S21 (200Th) need?
The Bitmain Antminer S21 (200Th) draws 3,550W of power. You need a power supply rated for at least 3,905W with appropriate voltage (200-240V AC). D-Central stocks compatible power supplies in our shop. Always use a quality PSU from a reputable manufacturer to protect the miner and wiring.