The Antminer S19 XP was the efficiency flagship of Bitmain’s S19 line, released in 2022 on the TSMC 5nm BM1366 chip — a different, more advanced process than the 7nm BM1398 used in the original S19 and S19 Pro. It delivers about 140 TH/s at roughly 3,010 W, for an efficiency near 21.5 J/TH. That made it the most efficient air-cooled Antminer of its generation, and it is still relevant today on moderate power. This guide gives the real specs and internals, written from D-Central’s bench experience with the S19 family.
| Specification | Detail |
|---|---|
| Model | Antminer S19 XP |
| Manufacturer | Bitmain |
| Algorithm | SHA-256 (Bitcoin / Bitcoin Cash) |
| ASIC chip | BM1366 (TSMC 5nm) |
| Hashrate | 140 TH/s |
| Power draw | 3,010 W |
| Efficiency | ~21.5 J/TH |
| Hash boards | 3 boards (BM1366 chips in series-wired voltage domains) |
| Control board | Amlogic-based platform (with batch variants) |
| Release | 2022 |
| Dimensions | 195 × 290 × 400 mm |
| Weight | ~14.2 kg |
| Noise | ~75 dB |
| Cooling | Dual axial fans, forced air |
Antminer S19 XP specifications, explained
Hash rate
The S19 XP hashes at about 140 TH/s of SHA-256 — a large jump over the 95–110 TH/s of the original S19 line, achieved by moving to the newer 5nm BM1366 chip rather than by raising power. On a used unit, confirm all three boards are reporting full chip counts before trusting the nameplate number.
Power and efficiency
At roughly 3,010 W the S19 XP’s efficiency lands near 21.5 J/TH. That is the key number: at the time it was a generational leap in efficiency, and it remains usable in 2026, though the S21 generation has since pushed below 17.5 J/TH. The XP makes sense at moderate residential rates and is comfortably profitable on cheap power. It expects 200–240 V AC.
Chip and hash-board architecture
The S19 XP is built on the TSMC 5nm BM1366 — the same chip family as the S19K Pro and S19 XP Hydro. This is the most common point of confusion about the XP: it is not a 7nm BM1398 part like the base S19. The chips are spread across three hash boards and, as on every Antminer, grouped into series-wired voltage domains regulated as units. Voltage is controlled per domain, not per individual chip, so a single failed chip silences its whole domain and chain.
Control board, cooling and noise
The S19 XP generation moved to an Amlogic-based control platform (with some variation across production batches). Two high-static-pressure fans cool the boards; at around 75 dB it is loud and belongs in a shed, garage, or dedicated space rather than a living area.
Custom firmware on the Antminer S19 XP
The S19 XP is a common target for third-party firmware. Custom firmware does not change the silicon — it changes how the control board drives it. The headline feature across the firmware ecosystem is autotuning: instead of running every chip at one factory frequency, the firmware finds an efficient operating point and applies it per voltage domain, not per individual chip. The values are calculated live from each board’s measured behaviour rather than loaded as fixed presets.
On an already-efficient machine like the XP, autotuning is mostly used to fine-tune the hashrate-versus-efficiency balance or to underclock for quieter, cooler operation. This category exists thanks to the projects that built it in the open — Braiins pioneered ASIC autotuning and the Stratum V2 protocol, with a broader community carrying it forward. Our firmware comparison lays out the trade-offs honestly.
D-Central’s own contribution to that lineage is DCENT_OS, a GPL-3.0 open-source Antminer firmware we are building in the open. It is in closed beta today, with a public beta targeted for summer 2026 — experimental, not production-ready. You can join the DCENT_OS waitlist to follow or test it.
Owning and repairing an S19 XP
We have repaired and refurbished S19 XP units on our Laval bench since they launched. The BM1366 platform is serviceable, though its 5nm boards reward careful handling and clean power. When a board drops a chain or a unit stops hashing, we publish transparent flat-rate ASIC repair pricing instead of the opaque return-for-repair loop the manufacturers run. Because the XP is still genuinely efficient, repair is more often worthwhile here than on the older 7nm models. Tested, warrantied refurbished units appear in our shop as they clear the bench.
FAQ
What is the Antminer S19 XP’s hashrate and power consumption?
The Antminer S19 XP produces about 140 TH/s while drawing roughly 3,010 W, for an efficiency of about 21.5 J/TH.
What chip does the Antminer S19 XP use?
The S19 XP uses Bitmain’s TSMC 5nm BM1366 ASIC — the same chip family as the S19K Pro and S19 XP Hydro. It is not the 7nm BM1398 used in the original S19 and S19 Pro.
Is the Antminer S19 XP still efficient in 2026?
At about 21.5 J/TH the S19 XP remains usable and is the most efficient of the air-cooled S19 line, though current S21-class miners have since pushed below 17.5 J/TH. It is profitable on cheap power and viable at moderate residential rates.
Can the Antminer S19 XP run custom firmware?
Yes. The S19 XP is a common target for third-party firmware. Autotuning firmware adjusts frequency and voltage per voltage domain at runtime to balance hashrate and efficiency. D-Central is also building DCENT_OS, an open-source (GPL-3.0) firmware currently in closed beta.
Does the Antminer S19 XP run on 120 V?
No. In stock form the S19 XP expects 200–240 V AC. Running it at home on standard North American power requires a 240 V circuit or a modified low-power configuration.
