Quick answer
The Antminer S17 (Bitmain, 2019) delivers about 56 TH/s at roughly 2,520W, an efficiency near 45 J/TH on the 7nm BM1397 chip. It launched the S17 generation and is now a cheap secondary-market miner worth buying only on low-cost power, with repairs factored in.
Verdict: a 2019 workhorse that is cheap today — fine on cheap power or as heat, but a 240V, ~75 dB, repair-prone machine.
For the full canonical specification sheet, see our Antminer S17 specs guide. This review answers the question people actually ask — is an S17 still worth it? — with the practical detail behind the numbers.
The Antminer S17 opened Bitmain’s S17 generation in 2019, introducing the 7nm BM1397 chip and a big efficiency jump over the S9 era. It was succeeded quickly by the S17 Pro and S17+, then by the S19, so today it sits cheaply on the secondary market. Whether that cheap price is a bargain depends entirely on your power cost and your appetite for maintenance.
Antminer S17 specifications
- Hashrate: ~56 TH/s (50 and 53 TH/s bins also shipped)
- Power consumption: ~2,520W at the wall (stock, 56 TH/s bin)
- Efficiency: ~45 J/TH
- ASIC chip: BM1397, 7nm (Bitmain’s second-generation 7nm chip)
- Chip count: 144 chips across three hashboards (48 per board)
- Algorithm: SHA-256
- Cooling: dual fans
- Noise: ~75 dB
- Released: 2019
Architecture and efficiency
The S17 uses 144 BM1397 chips (48 per board across three boards) on a 7nm process. Bitmain marketed the BM1397 as their second-generation 7nm design; its unified command format was later inherited almost byte-for-byte by the BM1398 in the S19 series. Voltage is regulated per power domain on each board, not per individual chip. At ~45 J/TH the S17 sits between the budget T17 (~55 J/TH) and the efficient S17+ (~40 J/TH). It is roughly twice as power-hungry per terahash as a modern S21, so its economics depend on a low electricity price.
Power and home use
At ~2,520W the S17 needs a dedicated 240V circuit — the class of outlet used for a dryer or EV charger — not a standard 120V household receptacle. Some guides suggest swapping the PSU to run it on 120V; in practice the wall current required makes that impractical and unsafe on a normal household circuit. At ~75 dB it is loud, suited to a garage, dedicated room, or ventilated hashcenter. For quiet Bitcoin mining at home on a normal outlet, the Bitaxe is the right tool — silent, USB-C powered, around 15W.
Firmware and tuning
Custom firmware is how operators get the most from an S17, mainly by undervolting for efficiency. The tooling stands on the shoulders of the people who built the field — Braiins pioneered ASIC autotuning and native Stratum V2, Luxor brought fast curtailment, and the community reverse-engineered the BM1397. Autotuners derive frequency and voltage per domain at runtime; they are not fixed presets. See our firmware comparison for the details. D-Central is also building DCENT_OS, our own GPL-3.0 firmware — closed beta now, public beta targeted for summer 2026, experimental and waitlist-only.
Buying, refurb, and repair
D-Central has run a Bitcoin mining repair bench since 2016 and services the S17 platform constantly. This is the generation that most rewards repairability: the S17 line is known to age harder than the S9 or S19, with hashboards and DC-DC converters the usual failure points. When a board fails, a replacement S17 hashboard often beats buying a whole new unit; check our transparent ASIC repair pricing first. Refurbished units carry D-Central’s own warranty; new units carry the manufacturer’s; returns are DOA/defect-only. We build to order, so lead times are estimates, not promises.
Is the Antminer S17 still worth it?
Buy an S17 if your power is cheap, you want more hashrate than an S9 without spending S19 money, and you are comfortable doing the occasional hashboard swap. Skip it if you want efficiency, quiet, or hands-off reliability. As a learning and tinkering platform it is excellent value; as a profit centre it depends squarely on your electricity price.
FAQ
What are the Antminer S17 specifications?
About 56 TH/s at roughly 2,520W (~45 J/TH), using 144 of the 7nm BM1397 chips across three hashboards on the SHA-256 algorithm. It was released by Bitmain in 2019.
Is the Antminer S17 still worth it?
Only on cheap power, and only if you can handle some maintenance. At ~45 J/TH it is far less efficient than current hardware, and the S17 generation is repair-prone, so price in occasional hashboard repairs.
What chip does the Antminer S17 use?
The 7nm BM1397, Bitmain’s second-generation 7nm chip, shared across the whole S17/T17 family and the direct predecessor of the S19’s BM1398.
Can I run an Antminer S17 on a 120V outlet?
Not practically. At ~2,520W it needs a dedicated 240V circuit; running it on a standard 120V household receptacle would exceed the circuit’s safe current. For quiet 120V home mining, use a Bitaxe.
Last reviewed and fact-checked: June 2026 — D-Central. Specifications cross-checked against manufacturer data and our own repair-bench experience.
