Lot of 100 Refurbished Antminer S19 95TH/s

Description

One hundred refurbished Antminer S19 units at the stock 95 TH/s, running Braiins OS. That is 9.5 PH/s of SHA-256 against roughly 325 kW of connected load. At this size your electricity contract decides whether the purchase works, and the hardware price is close to a rounding error against it — a 2020-generation machine at 34.2 J/TH earns on cheap or curtailed power and bleeds on retail power. Do that arithmetic with your own rate before you read any further, using our guide to buying used ASIC miners.

Antminer S19 (base model) — Bitmain's published specification

Stock hashrate	95 TH/s ±5%, SHA-256
Stock power at the wall	3,250 W ±5%
Stock efficiency	34.2 J/TH by arithmetic (3,250 W ÷ 95 TH/s); Bitmain publishes 34.5 J/TH ±5%
Input voltage	200–277 V AC. This is not a 110 V machine and no adapter makes it one
ASIC chip	BM1398BB, 7 nm — 76 chips per hashboard, 228 per machine
Noise	~75 dB from 4 fans
Dimensions and weight	400 × 195.5 × 290 mm bare, 570 × 316 × 430 mm boxed. 14.2 kg net, 16 kg gross per unit — Bitmain’s published S19 specification (model 240-Ca). Freight is billed on the gross weight, not the net
Operating temperature	5–40 °C · Network: Ethernet RJ45
Generation	launched May 2020, so a unit sold today is around six years old

One hundred units, in site terms

Hashrate	9,500 TH/s = 9.5 PH/s at stock
Connected load	325 kW continuous, not peak. Specify with headroom above that
Heat rejection	325 kW in means 325 kW out. On builds this size, airflow design outlasts the electrical work as the hard problem
Freight	about 1,420 kg of miners net and about 1,600 kg gross once boxed (100 × Bitmain’s published 14.2 kg net / 16 kg gross) — multiple pallets on LTL, never parcel, and the quote is priced on the gross weight
Noise	one hundred machines at ~75 dB. There is no residential version of this deployment

The Braiins firmware, described accurately

These ship on Braiins OS at the stock 95 TH/s, and that is the configuration where the firmware is genuinely worth having: tuning each chip separately, rather than running a whole hashboard at the voltage its weakest chip demands, recovers efficiency the stock firmware leaves on the table. Left at stock hashrate it is an efficiency tool. It only becomes an efficiency cost when it is used to push output past the factory rating, which is not what this lot is doing. Be aware that any third-party firmware voids remaining manufacturer coverage — on hardware this old, coverage that expired years ago regardless.

Attrition is a budget line at a hundred units, not an anomaly

A hundred six-year-old machines will produce a steady trickle of hashboard faults for as long as you run them. That is the cost of operating this class of hardware, not evidence of a bad lot, and any seller implying otherwise is selling you something. Plan for a repair bench and a spares float from day one — we carry hashboard testers, test fixtures and repair kits precisely because fleets this size need them on the shelf rather than on order. Get the DOA window and the replacement policy agreed in writing before the order goes in, because at this quantity the difference between a 5-unit and a 15-unit allowance is real money.

What’s in the box

Nothing in this listing states whether power supplies come with the machines, so we are not going to say they do. An S19 normally ships with a Bitmain APW12, but used lots sometimes move as bare miners, and across a hundred units that single question is a five-figure swing in what you are actually buying. Get written confirmation of PSUs, power cords and plug standard before you order. Ask and we will put it in writing.

Condition and warranty

Sold refurbished and tested. Past that, this listing states no condition grade and no warranty term, and we are not going to imply one on your behalf. Ask for the grade, the test method and the return terms in writing. On hardware this age those terms move the economics more than any number on the spec sheet above.

Who should buy this

Operators who already have the site, the power contract and the repair capability. If any one of those three is still a plan rather than a fact, buy a smaller lot first, prove your real power cost on your own meter, and scale into this once the numbers are yours rather than ours.

Questions buyers ask about this lot

Will this run on a normal household outlet?

No. This lot needs a dedicated 200–277 V circuit. A North American 120 V household outlet will not run it under any adapter or configuration. Have an electrician confirm the supply before the pallet arrives.

How loud is it?

~75 dB from 4 fans — about as loud as a household vacuum cleaner running continuously, and it does not stop. This is a garage, workshop, outbuilding or hosted-facility machine, not something to put in a room where people live or sleep.

What condition is it in, and what does that grade mean?

This is second-hand stock. We describe it the way we found it: tested working means it ran on our bench at the stated hashrate, refurbished means it was also cleaned, re-pasted or had parts replaced, and as-is means it is sold without a working claim. The grade for this unit is stated in the description above; where a listing states no grade, it says so rather than implying one. Cosmetic wear — dust, scratches, label marks — is normal on hardware that has been mining and is not a fault.

What should I check the day it arrives?

Photograph the pallet or box before you open it, keep the packaging, and run the 48-hour acceptance test straight away. Freight claim windows are short, and a fault found on day two is a conversation while a fault found on day thirty is an argument. Our own six-step bench procedure is published in full, so you can repeat exactly what we did.

Shipping cost for this exact item, and how warranty and returns work here, are answered in the Shipping & buying tab on this page. Anything else, ask a person on +1 (781) 577-0377 or ns@ingmining.com — we would rather talk before you buy.

A hundred machines: the spares float, costed, and the DOA allowance

At a hundred units attrition is a budget line rather than an insult. Here is what we would put on a shelf before this pallet lands, at what those items are listed at on this store on 15 August 2026: four dual fan assemblies at $24.99, four tested working S19 hashboards at $59.99, two tested control boards at $59.99, four APW9/APW12 supply cables at $16.50 and one S19/T19 test fixture at $59.99. That is $585.89, or $5.86 a machine. Those quantities are our judgement and not a measured failure rate, and we are not going to dress them up as one.

Two omissions in that list are deliberate. It carries no spare power supply, because we do not currently list a like-for-like APW12 replacement for an air-cooled S19 — on a used fleet that is the gap most likely to bite, so price one in from your own channel rather than discovering it on a Tuesday. And it carries nothing above the cheap end of the diagnostic ladder; the full repair and test shelf runs a long way further up.

The other hundred-unit number is the dead-on-arrival allowance, and it is a conversation rather than a figure. We publish no DOA rate anywhere on this site. At a hundred units the gap between a five-unit and a fifteen-unit allowance is real money, it takes ten minutes to agree beforehand and weeks to argue afterwards, and anyone who quotes you a failure rate to two decimal places has measured nothing. The policy is on bulk used ASIC miners, and our whole priced repair shelf is published as a dated census at used ASIC lot data.

Related hardware and where this sits in the store

Other fleet lots and single units from the same family:

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

A hundred S19s is about 9.5 PH/s against roughly 325 kW of connected load, so the energy contract decides this purchase far more than the hardware price does. Work it through with our used-miner buying guide.

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.

Where this listing sits

This one is on the used and refurbished shelf. It is second-hand hardware. The grade for this specific unit is stated in the description on this page — and where a listing states no grade, it says so rather than implying one.

What our grades mean

These are the only words we use, and each one means a specific thing. They are not interchangeable and we do not soften them to move stock.

New	Unused stock. Factory sealed unless the listing says otherwise — “new, open box” means exactly that, and the listing will say it.
Tested working	Second-hand, and it ran on our bench at the hashrate the listing states. We measured it; we are not repeating what the last owner told us. Expect cosmetic wear.
Refurbished	Tested working, plus work done: cleaned, thermal paste and fans dealt with, failed components replaced. The listing says what was actually done to that unit rather than using the word as decoration.
As-is / for parts	Sold with no working claim at all, at a price that reflects it. Buy these to repair or to harvest. If a listing says as-is, assume it does not hash until you have proved otherwise.
Untested	We have it, we have not powered it, and we are not going to pretend we did. Rarer than as-is and always stated explicitly.

What a grade here does not mean

Cosmetic wear is not a fault. Dust, scratches, scuffed labels and discoloured plastics are normal on hardware that has been earning. We photograph what we have; if the pictures matter to you, ask for more and we will take them.
A grade is not a warranty. Warranty terms are stated per listing, never per store — see the Shipping & buying tab. A tested-working grade describes what the machine did on our bench, not what we owe you in six months.
A boosted hashrate is not a spec. Where a unit ships on tuned firmware we say so and we give the factory figures too, because overclocking raises power faster than it raises hashrate — a tuned machine is less efficient per terahash than stock, not more.
We will not invent a grade to fill a field. If a unit came in without history and has not been through the bench, its listing says that.

How the grade gets decided

A used-hardware seller who will not tell you how they test is asking you to take the grade on trust. Ours is published: the six-step bench procedure every machine goes through, and the five measurements that get recorded — per-board hashrate, chip count, measured wall power rather than the nameplate figure, hardware error rate, and temperature under sustained load. When it reaches you, run the 48-hour acceptance test straight away, while the freight claim window is still open.

Buying second-hand for the first time? How to buy a used ASIC miner without getting burned is the long version, written from the repair bench rather than from a spec sheet.

Shipping

This listing is quoted rather than priced, and freight is quoted with it. Tell us where it is going and we will confirm the shipping cost to that address with the price, before you pay — on a multi-unit or pallet order that is the only honest way to do it.

Outside the United States the checkout quotes a flat international rate. On multi-unit or pallet orders, contact us before ordering so freight to your destination can be confirmed properly. What to check when the pallet arrives, and how a freight claim works, is covered in the mining hardware shipping guide.

What to do the day it arrives

Photograph the pallet or the box before you open it, and keep the packaging until you are satisfied. Freight claim windows are short, and damage found on day two is a conversation while damage found on day thirty is an argument.

Then run the 48-hour acceptance test straight away, while that window is still open. It is the same ground our own bench covers, so you can compare like for like: how the grade on this listing was arrived at, and the five measurements we record, are set out in the Condition & grading tab on this page.

Condition, warranty and returns

Condition: Used — second-hand stock. The grade for this unit is on the listing above, and where a listing states no grade it says so.

Warranty is stated per listing, not across the catalogue. Some units carry a manufacturer term and say so above, naming the term and the date it runs from. Many units, particularly used and AS-IS stock, carry none, and those listings do not claim one. There is no blanket warranty covering a catalogue that runs from sealed factory stock to a hashboard sold for parts. For what a mining warranty normally covers, see ASIC miner warranty explained.

Returns: ask for the terms on this unit before you pay. No single returns window is published for the whole store, because the sensible terms on a tested working machine and on a board sold AS-IS for parts are not the same terms. Email or call and ask what applies to this exact item — it is a two-minute conversation and a great deal cheaper than a dispute.

Where you are going to run it

Two questions decide whether a machine like this works where you live, and neither of them is about the miner: can the circuit carry it, and what does your electricity cost? Most full-size machines here want a dedicated 240 V circuit and run at 70–75 dB continuously. A few do not — the Avalon Q publishes 45–65 dB and runs on 110–240 V — so read the voltage and noise figures on this listing rather than assuming. ASIC miner power requirements covers breaker sizing and what the install actually involves; cooling covers where the heat and the noise end up.

If your power is not genuinely cheap, hosting is the question to be asking instead of which miner to buy. Break-even electricity rate is hashprice divided by (24 × J/TH), and hashrate cancels out of it entirely — which is why a cheap old machine on expensive power loses money faster than an expensive new one does. The buying guide has the arithmetic; work out your own number before you buy anything.

If hosting is the answer, get written answers on three things before you sign: who pays for repairs, what the uptime commitment actually pays out when it is missed, and how curtailment is handled. A flat per-machine monthly rate is where most of the unpleasant surprises live. Types of mining farm compares the models and hosting versus cloud mining covers why owning the hardware is the better end of that trade. Ask us before you commit — it is a five-minute call and a great deal cheaper than a contract you cannot get out of.

What we do once it is racked, wherever that is. Deployment, firmware and monitoring are a service we run rather than a line on a page: pool and network setup, Braiins OS or VNish tuning, offline alerts, and board-level fault-finding when a machine stops hashing — ASIC mining consulting sets out what that covers. The hosting agreement itself is between you and the facility. What we can give you is the number most hosting disputes turn on: what this machine measured at the wall on our bench, so a shortfall on site is a figure to compare against rather than an argument about what it should have been doing.

Who you are buying from

ING Mining LLC, Hanson, Massachusetts. ING MINING® is a registered U.S. trademark; our marketplace feedback is on the reviews page and the longer version of who we are is on about. Reach a person on +1 (781) 577-0377 or ns@ingmining.com.

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Lot of 10 Refurbished Bitmain Antminer S19 95TH/s Miners – Braiins OS

Lot of 100 Refurbished Bitmain Antminer S19 95TH/s Miners – Braiins OS

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Description