Bitmain Antminer S19 110TH/s Bitcoin Miner – Refurbished and Boosted
A single refurbished Antminer S19 running 110 TH/s on Braiins OS — a boosted base S19, not a factory S19 Pro. At least 3,763 W, not 3,250 W. Deep-cleaned, new fan covers, one-hour tested, 30-day guarantee. Full Bitmain specs and the distinction explained.
Price:
$249.99
- Condition graded per unit: new, tested working, refurbished or as-is
- Warranty and returns stated per unit, not per store
- Ships UPS Ground within 7 business days
Description
One refurbished Antminer S19 running 110 TH/s on Braiins OS. Two corrections belong at the top of this page, because the copy that used to sit here got both wrong. This listing is for a single machine, not a lot of ten. And 110 TH/s here is a firmware-boosted figure on a base S19 — it is not the factory rating of an S19 Pro, and it is not a number you should size a circuit from.
Boosted base S19 versus factory S19 Pro
Bitmain built a 110 TH/s machine and it is called the S19 Pro. It gets there on 114 chips per hashboard where the base S19 has 76, which is why it manages 110 TH/s at 3,250 W for 29.5 J/TH. Firmware cannot add chips. Driving a base S19 to 110 TH/s produces the same headline hashrate at a worse efficiency and a higher bill. This is the boosted base machine. If it is specifically factory Pro hardware you want, say so before ordering and we will confirm the model and board revision in writing rather than let you assume.
What it actually draws
No metered figure at 110 TH/s is stated in this listing and none is invented here. The reliable floor: at the factory 34.2 J/TH, 110 TH/s needs 3,250 W × (110 ÷ 95) = about 3,763 W, and because efficiency degrades under overclock the real draw is higher still. That is at least 15.7 A at 240 V from one machine, before any continuous-load derate — which puts it uncomfortably close to the limit of a 20 A circuit and is exactly why you want the measurement rather than the spec sheet. Ask and we will meter this unit and send you the number.
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 |
Before you put one in a house
An S19 takes 200–277 V AC and will not run from a North American 110 V outlet under any configuration. It runs at ~75 dB on four fans. Boosted, it draws more than stock, and everything it draws comes back out as heat and fan speed — so this unit is louder and hotter than a stock S19, not quieter. Garage, shed or outbuilding. If it has to share space with people, buy a quiet home miner instead; this is emphatically not one.
Condition — the refurbishment, as stated
Described as professionally refurbished: deep-cleaned and hand-washed, fitted with new fan covers, parts replaced as needed, and performance-tested for one hour before shipping. That is a real and specific process, and more than most used listings put in writing. It is not a factory rebuild. Cosmetic wear consistent with a machine that has been mining since 2020 is expected, not exceptional.
Warranty
This unit carries ING Mining’s 30-day guarantee. Third-party firmware voids any surviving manufacturer coverage, which on 2020-generation hardware has lapsed regardless. Ask us to confirm what the 30 days covers — DOA replacement, hashrate shortfall, or both — in writing before you order.
What’s in the box
This listing does not state whether a PSU ships with the machine, so this page does not claim one does. A boosted S19 also asks more of its supply than a stock one, so the rating matters as much as the presence. Confirm PSU, rating, cord and plug standard with us in writing before ordering.
Who should buy this
A buyer who wants the most terahashes obtainable from one cheap used machine, has cheap power and somewhere loud to put it. If your power is expensive, the stock-rate 95 TH/s S19 is the better economic buy — fewer terahashes, better J/TH, and a smaller monthly bill.
Questions buyers ask about this machine
Will this run on a normal household outlet?
No. This machine 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.
The machine one shelf over costs $130 more and is usually the better buy
We would rather say this here than have you work it out after the first power bill. The used Antminer S19k Pro at $379.99 makes 115 TH/s on 2,645 W. This machine makes 110 TH/s on at least 3,763 W. That is about 816 kWh a month more electricity for five fewer terahashes — roughly $57 a month at 7¢/kWh hosting, so the $130 you save buying this one is gone in about ten weeks and keeps going after that.
| This S19 | S19k Pro | |
|---|---|---|
| Price | $249.99 | $379.99 |
| Hashrate | 110 TH/s, boosted | 115 TH/s, factory |
| Wall power | 3,763 W at best | 2,645 W |
| Break-even power price | 3.94¢/kWh | 5.86¢/kWh |
| Circuit at 240 V | 15.7 A — plan 30 A | 11.0 A — fits 20 A |
| PSU | Not stated — ask | Included |
At $32.33/PH/day, BTC $65,231, difficulty 127,479,855,693,691, 10 August 2026. These move daily.
When this machine is still the right buy: below about 2.04¢/kWh it returns its money faster than the S19k Pro does, because at that rate the electricity gap stops mattering and the lower purchase price starts to. That means behind-the-meter generation, curtailed renewables or flare gas — not a utility bill. It is also the cheaper machine to learn board repair on, and the cheaper mistake to make. Above two cents, buy the S19k Pro; above about 5.7¢, buy neither.
The full arithmetic — payback at every rate, the circuit each one needs and what happens at the halving — is in Antminer S19 vs S19k Pro. Circuit and breaker sizing is on our ASIC miner power requirements page.
Is it worth repairing, and does used still win at this price?
A boosted machine fails differently, and the cheapest part on our shelf is the one that matters most on this one. Driving 76-chip boards to 110 TH/s means more heat through the same four fans and the same supply, and heat is what takes machines down here: in the order we see them it is the power supply, then a fan that stopped and let a board cook, then a control board, and only then a genuine hashboard failure. The S19/S20/S21 dual fan assembly is $24.99. On a machine running above its factory point that is not an accessory, it is the part that protects the $59.99 tested-working S19 95 TH/s hashboard behind it. why mining hardware fails has the rest of the order.
The repair arithmetic at $249.99: one hashboard $59.99 (24% — worth fitting), a tested ctrl_C55 control board $59.99, a S19 Pro 110 TH/s board set $169.99 (68% — do not), an APW12-class 5,600 W supply $349.99 (140% — the machine is scrap first). Diagnosis is a separate cost from repair, and on one machine a universal Antminer test fixture at $199.99 never pays for itself; the parts compatibility guide has the arithmetic for when it does.
Used versus new here is $2.27 per terahash at the boosted 110 TH/s against $17.14 for a new S21 Pro 245T at $4,200 — but the boosted figure is bought with worse J/TH, so it flatters the capital line and worsens the running one. That trade is the whole used-vs-new question and used vs new ASIC miners settles it against your own electricity rate.
Parts prices are our own shelf, read on 16 August 2026, and they are parts only — we do not publish a bench labour rate, so nothing here pretends to be a fitted price.
Related hardware and where this sits in the store
Other used and refurbished units currently on the floor:
- Lot of 20 Refurbished Bitmain Antminer S19 110TH/s Miners – Boosted, VNish OS
- Antminer S19 95TH/s ASIC – Boost to 105TH/s (Braiins OS) – Refurbished
- Antminer S19 95TH/s ASIC – Boost to 105TH/s (Braiins OS) – Refurbished
Categories: Bitmain Antminer, Bitcoin miner, Used ASIC miners and Air Cooling.
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.
Additional information
| Weight | 32 lbs |
|---|---|
| Dimensions | 20 × 15 × 12 in |
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