Lot of 20 Refurbished Bitmain Antminer S19 110TH/s Miners – Boosted, VNish OS

Description

Twenty refurbished Antminer S19 units listed at 110 TH/s each, running VNish OS. Twenty machines is the sweet spot where a serious operator can still hand-manage a fleet — one 200 A service, one switch, one afternoon.

Read the 110 TH/s figure carefully

This is the important part and we would rather say it up front than have you find out after delivery. A factory Antminer S19 is a 95 TH/s machine at 3,250 W (34.2 J/TH, BM1398BB silicon). A 110 TH/s figure on VNish is an overclock, and overclocks cost watts — the wall draw at that tune is meaningfully higher than 3,250 W per unit. If you size your breakers off the stock number you will trip them.

Before you buy, ask us for two things: the exact board revision on these units, and the measured wall draw at the tune they ship on. We will read them off the machines rather than quote you a spec sheet. Sizing 20 units of electrical service off a guess is how people end up rewiring a building twice.

Base hardware specifications (Antminer S19)

What’s in the box

• 20 × Antminer S19 110TH/s SHA-256 — this listing is the whole lot, not one machine from it
• VNish firmware, already installed and configured
• Nothing that is not listed above. Cords, controllers, brackets and spares are only included when this listing names them — if you need to know before you pay, ask on +1 (781) 577-0377 or ns@ingmining.com and we will confirm in writing what is physically in the crate

The figures above are Bitmain’s factory ratings for the S19 platform. The tuned operating point on these particular units is different by definition — that is what VNish is for.

What VNish OS gives you

Per-chip autotuning, the ability to trade hashrate against efficiency deliberately, and much better visibility into which chip on which board is dragging a machine down. It also voids any remaining manufacturer warranty, and running boards hot to chase terahashes shortens their life. On a twenty-unit fleet we would tune these back toward efficiency rather than run them at the top of the range, but that is your call and your power price.

Condition

Sold as refurbished. Ask us what was replaced, how long they were burned in, and what warranty comes with the lot — we will answer all three in writing before you pay.

Power and siting — read this before you buy

An S19 is a 200–277 V AC machine. It will not run on a standard North American 120 V outlet, and at roughly 3.25 kW it needs a dedicated 240 V circuit with real headroom — a 20 A 240 V breaker per machine is the practical floor. It is also a genuinely loud industrial appliance at about 75 dB. This is a shed, garage, warehouse or hosted-facility miner, not a living-room miner. If you want something you can put in a house, look at the Avalon Q instead.

Budget for spares. Hashboards, fan assemblies, PSUs and control boards are the four failure points worth having on a shelf before you need them.

Buying from ING Mining

We buy, repair, host and resell this hardware ourselves, so ask us the awkward questions before you order — power draw at the wall, board revision, what the fans sound like in a garage. Browse the rest of the catalogue at all miners.

Twenty overclocked S19s draw meaningfully more than twenty stock ones, and that difference is your whole margin. The ASIC miner buying guide explains why measured wall draw beats the spec sheet on tuned machines.

Twenty machines: where a spares shelf starts paying for itself

Twenty is the size at which an idle machine stops being an annoyance and starts being arithmetic. A dual fan assembly is $24.99 on this store today; a machine standing still for a week waiting on one has already cost more than the fan. Buy the shelf with the pallet rather than after the first failure, and treat the repair tail as an operating cost rather than as an insult.

What goes on it, cheapest first, at what these are listed at on this store on 15 August 2026: the $16.50 APW9/APW12 supply cable, the $24.99 dual fan assembly, the $59.99 tested control board and the $59.99 tested working S19 hashboard. Diagnosis is a separate cost from repair, and this is where twenty machines earns its own rule: you cannot tell a dead hashboard from a dead control board, a dead rail or a bad ribbon cable by looking. Of the machines that reach our bench described as having a dead hashboard, roughly half have a healthy board and a sick supply, control board or cable — which is the most expensive assumption in used mining, because by the time the machine ships the buyer has usually already paid for the board.

At twenty, the cheap end of the diagnostic ladder is the honest answer: the $59.99 S19/T19 test fixture on an SD card. The $459.99 hashboard tester works out at $4.60 a machine across a hundred and does not make sense across twenty. A costed spares float, and where each rung of that ladder starts to pay, is on used ASIC miner fleet economics.

Related hardware and where this sits in the store

Other fleet lots and single units from the same family:

• Lot of 50 Refurbished Bitmain Antminer S19 95TH/s Miners – VNish OS
• Lot of 40 Used Bitmain Antminer S19 95TH/s Miners
• Lot of 5 Refurbished Bitmain Antminer S19 95TH/s Miners – Braiins OS

Categories: Bitcoin miner, Used ASIC miners, Bitmain Antminer and Air Cooling.

Delivery day on a lot this size is its own procedure — what to write on the freight receipt before you sign, reconciling the count and the serial numbers, why the machines come up in groups rather than together, and how to sort the ones that do not: receiving a used miner lot.