Antminer S17+ Review: A Comprehensive Analysis for 2023 and Beyond

The Antminer S17+ was Bitmain’s refinement of the S17 platform: the same 7nm BM1397 chip, pushed to a higher hashrate and better efficiency than the original S17 and S17 Pro. Released at the end of 2019, it bridged the gap to the S19 era. Today it sells cheaply on the secondary market, which makes it interesting — provided you understand its power, noise, and repair realities. This guide walks through all three.

Antminer S17+ specifications

• Hashrate: ~73 TH/s (±3%; 70 and 76 TH/s bins also shipped)
• Power consumption: ~2,920W at the wall (stock)
• Efficiency: ~40 J/TH
• ASIC chip: BM1397, 7nm (Bitmain’s second-generation 7nm chip)
• Algorithm: SHA-256
• Cooling: dual fans
• Noise: ~75 dB
• Weight: ~11.5 kg
• Released: late 2019 / early 2020

Architecture: the BM1397 generation

The S17+ runs on the BM1397, the same 7nm chip used across the entire S17/T17 family (S17, S17 Pro, T17, T17+, S17e, T17e). Bitmain marketed it as their second-generation 7nm design, and it introduced the unified command format that the later BM1398 (S19) inherited almost byte-for-byte. The S17+ simply uses more chips and higher binning than the base S17, which is how it reaches 73 TH/s. As with all of these miners, voltage is controlled per power domain on each board rather than per individual chip.

Efficiency and real-world performance

At ~40 J/TH the S17+ was excellent for its day and is still the most efficient miner in the S17 line, comfortably ahead of the original S17 (~45 J/TH) and the T17 series. It is, however, roughly twice as power-hungry per terahash as a modern S21. That means its economics live or die on your electricity price: on cheap or stranded power it can still contribute, while on grid-rate power it is more heater than profit centre. Underclocking and undervolting with custom firmware are the standard way to improve its efficiency further.

Power and home use

At nearly 2,920W the S17+ needs a dedicated 240V circuit — the same class of outlet you would use for a dryer or an EV charger — not a standard 120V household receptacle. At ~75 dB it is also loud, closer to a vacuum cleaner than a PC. A ventilated garage, dedicated room, or small hashcenter suits it; a living space does not. If you want to mine Bitcoin quietly at home on a normal outlet, this generation is the wrong tool — the Bitaxe exists precisely for that, running silently off USB-C at around 15W. An aging S17+ is better thought of as a powerful space heater that also mines.

Firmware and tuning

Custom firmware is how most operators get the most out of an S17+, mainly by undervolting for efficiency rather than chasing peak hashrate. The ecosystem owes a debt to the people who built it first — Braiins pioneered ASIC autotuning and native Stratum V2, Luxor brought fast curtailment and hashprice-aware controls, and the wider community reverse-engineered the BM1397 itself. Autotuners calculate frequency and voltage per domain at runtime; they are not fixed presets. To compare dev-fee ranges, Stratum V2 support, and curtailment behaviour across options, see our firmware comparison.

D-Central is also building DCENT_OS, our own GPL-3.0 mining firmware — in closed beta now, public beta targeted for summer 2026, experimental and offered by waitlist rather than pre-order. It is one more layer of the mining stack we think operators should be able to own and verify themselves.

Buying, refurb, and repair

D-Central has run a Bitcoin mining repair bench since 2016, and the S17 platform is one we know well. The S17 line is famously fault-prone as it ages — hashboards and the dsPIC-based DC-DC converters are the usual failure points — so repairability matters more here than on most models. When a board fails, an upgraded replacement S17+ hashboard is often cheaper than a whole unit; check our transparent ASIC repair pricing before deciding. Refurbished units we sell are tested and carry D-Central’s own warranty; new units carry the manufacturer’s; returns are DOA/defect-only. We build to order rather than warehouse stock, so lead times are estimates, not promises.

Who should consider an S17+

An S17+ makes sense if you have access to cheap or stranded power, want a higher-hashrate machine than an S9 without S19 money, or want a capable heater for a cold space. Go in expecting to do some maintenance — the S17 generation rewards owners who can swap a hashboard — and price the unit accordingly. If you want hands-off, quiet, or home-friendly, look at newer or smaller hardware instead.

FAQ

What are the Antminer S17+ specifications?

About 73 TH/s at roughly 2,920W (~40 J/TH), using the 7nm BM1397 chip on the SHA-256 algorithm. It weighs about 11.5 kg and was released by Bitmain in late 2019.

Is the Antminer S17+ still worth buying?

Only on cheap power, or as heat. At ~40 J/TH it is the most efficient S17-line miner, but it draws nearly 2,920W and is far less efficient than current models, so its economics depend entirely on a low electricity price. Buy it used and price in occasional repairs.

What chip does the Antminer S17+ use?

The 7nm BM1397, Bitmain’s second-generation 7nm chip, shared across the whole S17/T17 family. It is the predecessor of the BM1398 used in the S19 series.

Can I run an Antminer S17+ at home?

It needs a dedicated 240V circuit and is loud at ~75 dB, so it belongs in a garage, dedicated room, or ventilated hashcenter rather than a living space. For quiet home Bitcoin mining on a normal outlet, a Bitaxe is the better fit.

How reliable is the Antminer S17+?

The S17 generation is more failure-prone than the S9 or S19, with hashboards and DC-DC converters being the common weak points. It is repairable, though, and individual hashboards can be replaced. Factor maintenance into the cost of ownership.

Last reviewed and fact-checked: June 2026 — D-Central. Specifications cross-checked against manufacturer data and our own repair-bench experience.