Bitmain Antminer T21 model 10 dual-mode official reference
Official Antminer T21 model 10 reference covering NEM 190T and HEM 233T modes with mandatory three-phase 380–415 V input, exact tolerances, firmware routing and repair guidance.
Quick answer
The Bitmain Antminer T21 model 10 dual-mode official reference is a Bitcoin miner rated about 190-233 TH/s at roughly 3,610 W (about 19 J/TH).
Full Specifications
| Model | Bitmain Antminer T21 model 10 dual-mode official reference |
|---|---|
| Model Number | Antminer T21 model 10 |
| Manufacturer | Bitmain |
| Algorithm | SHA-256 |
| Hashrate | 190-233 TH/s |
| Power Consumption | 3,610-5,126 W |
| Noise Level | 76 dB |
| Cooling | Air |
| Voltage Range | Three-phase 380-415 V AC; 50-60 Hz; 12 A maximum |
| Operating Temperature | 0 C to 45 C |
| Dimensions | 400 x 212 x 290 mm |
| Weight | 17 kg net |
| Interface | RJ45 Ethernet 10/100M |
| Status | OEM support reference |
Official two-mode reference: The Antminer T21 is identified by the manufacturer as model 10. Its exact specification publishes Normal Energy Mode (NEM) and High Energy Mode (HEM) at a 30°C inlet-air condition.
| OEM mode | Typical hashrate | Typical wall power at 30°C | Typical wall efficiency at 30°C |
|---|---|---|---|
| NEM — Normal Energy Mode | 190 TH/s, ±3% actual fluctuation | 3,610 W, ±5% actual fluctuation | 19.0 J/TH, ±5% actual fluctuation |
| HEM — High Energy Mode | 233 TH/s, ±3% actual fluctuation | 5,126 W, ±5% actual fluctuation | 22.0 J/TH, ±5% actual fluctuation |
These are the two manufacturer-defined modes in the cited model-10 record. They are not a generic tuning curve, and no output between or beyond the two modes is promised.
Mandatory three-phase electrical boundary
| Phase | Three-phase |
|---|---|
| Input voltage | 380–415 V AC |
| Input frequency | 50–60 Hz |
| Maximum input current | 12 A |
| Network | RJ45 Ethernet 10/100M |
The T21 is not a 120 V or ordinary single-phase installation. Wrong input voltage can damage the server. A qualified person must verify the complete miner and PSU nameplates, phase arrangement, service and circuit capacity, protection, disconnecting means, grounding, conductors, PDU, connectors, cord, airflow, and local requirements before energizing it.
The manufacturer’s current cord record identifies an APW11 power supply and P33-P33 cord for T21, with the cord included. Its dedicated-interface guidance identifies the P34 interface adapted to a P33 plug. These records do not make other cords, PDUs, PSUs, connectors, or models interchangeable. Never plug or remove a PSU cord while it is energized; switch off the PDU first.
Acoustic, physical, and environmental specification
| Sound level | 76 dBA at 30°C, specified at maximum fan RPM |
|---|---|
| Server dimensions | 400 × 212 × 290 mm |
| Packaged dimensions | 570 × 316 × 430 mm |
| Net / gross weight | 17.0 kg / 19.1 kg |
| Operating temperature | 0–45°C |
| Storage temperature | -20–70°C |
| Operating humidity | 10–90% RH, non-condensing |
| Operating altitude | Up to 2,000 m |
From 900 m to 2,000 m, the manufacturer requires reducing the highest operating temperature by 1°C for every 300 m increase in altitude.
Firmware and control-board identification
Match firmware to the exact T21 identity and installed control-board revision. Similar 21-series names, enclosures, connectors, or update workflows do not establish firmware, controller, PSU, hashboard, or parts compatibility.
- Photograph the miner, control-board, PSU, connector, and cord labels; record the serial, model, board revision, and installed version.
- Select T21 in the manufacturer’s firmware selector and read the complete package description.
- Use the T21 firmware decision page to keep model and control-board checks attached to the workflow.
- Stop if an image or procedure does not explicitly match the installed unit.
Repair and comparison
- For hardware faults, request T21 repair diagnosis.
- Compare T19 and T21 using their exact canonical specifications and electrical classes.
Known boundaries: no BM1368 identity, process-node claim, shared-silicon assertion, generic tuning range, cross-model compatibility, residential suitability, heat-reuse recommendation, profitability, price, or lifecycle status is asserted.
Primary sources: the official T21 model-10 specification, power-supply and cord record, dedicated-interface and safe cord guidance, and manufacturer firmware selector linked above. Reviewed August 28, 2026.