Bitmain Antminer B3 Tensority official reference
Official B3 baseline: 780 H/s, 360 W and 0.46 J/H, with external-PSU DC boundaries and the update_1000 procedure separated from unsupported post-upgrade claims.
Full Specifications
| Model | Bitmain Antminer B3 Tensority official reference |
|---|---|
| Model Number | Antminer B3 |
| Manufacturer | Bitmain |
| Algorithm | Tensority |
| Coins Mined | Unknown |
| Voltage Range | 11.6-13.0 V DC miner input; 7 PCIe connectors; external APW3/APW5/APW7; facility mains unresolved |
| Weight | 4.2 kg net |
| Status | Exact OEM reference |
Evidence-controlled B3 reference: Bitmain associates Antminer B3 with Tensority/BTM. Its native units are H/s and J/H and must not be converted into generic cross-algorithm hashrate or efficiency fields.
| Hashrate | Power | Efficiency |
|---|---|---|
| 780 H/s | 360 W +7% | 0.46 J/H +7% |
Electrical and physical boundary
The miner requires 11.6–13 V DC through seven PCIe connectors. Bitmain’s roster supports APW3, APW5, and APW7. This is device-side DC, not facility mains. A qualified person must verify the exact installed PSU label, facility voltage/frequency/current, cord, circuit, protection, connectors, grounding, and disconnect.
| Frequency | 750M, as printed |
|---|---|
| Fans | Two 12038; 4,500 RPM front/rear; 12 V / 2.4 A; 209.8 CFM |
| Hashboards / chips | 3 / 12 total |
| Operating temperature / humidity | 15–35°C / no more than 65% RH |
| Sound / PCB maximum | 74 dB / 80°C |
| Weight | 4.2 kg |
| Packaged dimensions | 321 × 215 × 225 mm |
Miner dimensions and packed weight are not published in the exact specification and remain unresolved.
Official update_1000 firmware procedure
Bitmain’s B3 procedure first installs ANTMINER-B3-201805232020-750M.tar.gz to fix fan-speed display, then update_1000.tar.gz to improve B3 hashrate. It does not publish an exact post-upgrade hashrate, power, efficiency, or tolerance matrix. Do not power off or interact with the miner during either upgrade. Bitmain states each normally takes about five minutes; if it exceeds ten minutes, abort and retry. No unsupported post-upgrade numerical lane is asserted.
Firmware, diagnostics, and repair
- Follow Bitmain’s exact B3 firmware procedure.
- Use Bitmain’s B3 support hub.
- Verify the exact B3 firmware in Bitmain’s selector.
- Organize symptoms and logs; request repair diagnosis; open the evidence router.
No architecture, economics, home, heat-use, tuning beyond the exact procedure, compatibility, or interchangeability claim is asserted. Primary source: B3 specification. Reviewed August 28, 2026.