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Machine review · Nov 7, 2026 · 4 min read

Antminer S19e XP Hyd review: 22 J/TH on water, a coin only cheap power makes well

Bitmain's S19e XP Hyd is a water-cooled 251 TH/s machine at 22 J/TH, the least efficient hydro machine we stock, and its box is among the cheapest per terahash in the water range. At Nigeria's 3.9¢ it makes a coin for less than the market pays. At 6¢ the coin costs more than the market pays.

An Antminer S19e XP Hyd on the Firsthand card: the machine photographed whole on the site's dark background, with its 22 J/TH figure

Bitmain Antminer S19e XP Hyd (251 TH/s)

The bottom line

The S19e XP Hyd is Bitmain's water-cooled S19-generation machine at 22 J/TH: 251 TH/s from 5,522 W. Racked at the UAE's 6¢ it makes a bitcoin for about $80,700 of electricity, above today's bitcoin price of $75,773, and its first year at today's price and difficulty returns -8%. At Nigeria's 3.9¢, with that site's lower uptime already counted, the same coin costs about $52,500 and the first year returns 26%.

Bought in February 2025, once we held a price for it, it has mined and kept 0.0656 BTC for $4,157 of power in 616 days: $829 of cashflow against a $3,839 landed cost, 22% of the box so far. It crossed to Nigeria once, on 26 February 2026. Between now and the 2028 halving it has another 0.042 BTC in it, worth about $5,211 with bitcoin back at its previous high of $124,493: about 1.6× its hardware by the halving.

What you are buying is a cheap box and a thirsty one. It asks $3.25 a terahash today, against $6.82 for the S21 Plus Hyd and $26.36 for the S23 XP Hyd, and it uses more than twice the power of the S23 XP Hyd for each terahash. It is a machine for the cheapest power we have, not for the water site's 6¢.

Scores

CriterionScoreWhy
Cashflow4/10Makes a bitcoin for about $52,500 of electricity at Nigeria's 3.9¢ and about $80,700 at 6¢, and year one comes to 26% in Nigeria against -8% in the UAE. It has covered 22% of its hardware in 616 days. The S21 Plus Hyd's year one at 6¢ is 27%.
Longevity3/10At 22 J/TH its line is $31.68 a petahash a day at 6¢ and $20.59 at 3.9¢. Half of today's hashprice, $16.24, is under both, so after the halving at today's conditions it clears only below about 3.1¢.
Efficiency2/10The least efficient water machine we stock: the S19 XP Hyd runs 20.8 J/TH, the S21 Plus Hyd 15, the S21j XP Hyd 12 and the S23 XP Hyd 8.9.
Quality control5/10Scored as unknown rather than as good. We found no operator reports of the S19e XP Hyd that we could cite, and the first price we hold for it is from February 2025.
Serviceability7/10Water-cooled, so it starts in the UAE, next to Bitmain's regional warranty centre, where in-warranty boards go straight to the maker. We could not open a maker page with warranty terms, so we score on our own repair terms.

Efficiency and longevity count most, because they decide how many halvings a machine clears. Reliability is scored as unknown, not as good, so it holds the total down.

Buy it if

Walk away if

22 J/TH on water, in three speed bins

Bitmain put the S19e XP Hyd on sale on 23 May 2024, as Ultramining reported: 251 TH/s from 5,522 W, 22 J/TH, water-cooled. Our store lists it at 251 TH/s, with 240 and 230 TH/s bins that are no longer sold. The store record gives 410 × 170 × 209 mm and 12.8 kg, the 380-415 V input and Ethernet; we could not open a Bitmain spec page, so we use that record and leave out anything it does not hold.

It is a water machine, which decides where it starts. A hydro machine begins in the UAE, at 6¢ and 99.3% uptime, beside the water plant, and crosses once to Nigeria's 3.9¢ when a year of figures says cheaper power pays better. We bought one and followed it to the crossing: the field report has the story, and this review is the buyer's version of it.

Chart: Coins kept since the first settled price we hold for it, the electricity that made them, the move to Nigeria and where it lands by the 2028 halving.

The box is among the cheapest per terahash in the water range

The first price we hold for the 251 TH/s unit, on 5 February 2025, was $10.71 a terahash, $2,688 for the box. Once it settled, a purchase in February 2025 cost $2,609. It is $817 today, $3.25 a terahash, and since April 2026 it has stayed between $2.73 and $3.26 a terahash: the best entry price it has had.

Beside the other water machines it asks almost the least. Only the S19 XP Hyd asks less, $3.05 a terahash at 20.8 J/TH, and it is the more efficient of the two; the S21 Plus Hyd asks $6.82 at 15, the S21j XP Hyd $11.55 at 12 and the S23 XP Hyd $26.36 at 8.9. A price per terahash settles to where efficiency and age put it, and the guide to what a miner costs all-in shows what sits on top of the box: landed at our UAE site this one comes to $3,839.

Chart: What the 251 TH/s unit has cost since the first price we hold for it, in February 2025.

At 3.9¢ it makes a coin for about $52,500

At Nigeria's 3.9¢ the S19e XP Hyd makes a bitcoin for about $52,500 of electricity today, against a bitcoin price of $75,773. At the water site's 6¢ the same coin costs about $80,700. The gap is the whole story of this machine: at 22 J/TH it burns 5,522 W, so every cent of the power rate shows up in the coin.

The leaner water machines make theirs for much less. At Nigeria's rate the S21j XP Hyd makes one for about $28,600, the S21 Plus Hyd for about $35,800 and the S23 XP Hyd for about $21,300. Those are electricity-only figures at today's difficulty. The S19 XP Hyd at 20.8 J/TH sits just below this one.

In its first year at today's price and difficulty the return is 26% in Nigeria and -8% in the UAE. Over its run since February 2025, electricity has averaged about $63,400 a coin, a lifetime average across both sites over 616 days. The figure to plan on is today's.

Chart: One bought today at today's price and racked at the UAE site: year one at today's difficulty, and what it returns by the April 2028 halving with bitcoin back at its previous high.

Where the halving puts it

A machine's line is the hashprice at which it stops covering its own power. At 22 J/TH a petahash uses 528 kWh a day: $31.68 at 6¢ and $20.59 at Nigeria's 3.9¢. On our hashprice chart, network hashprice was $32.48 a petahash a day on 6 November, so the machine clears the 6¢ line by 80 cents and Nigeria's by $11.89.

The 6¢ line has been crossed. Since the 2024 halving, hashprice has been under $31.68 on 76 of 932 days, most of them between February and August 2026, and its low was $27.74 on 6 June 2026. It has never been under $20.59. The count for a 19 J/TH machine shows how a lower line has fared.

The 2028 halving halves the coins a petahash earns. At today's price and difficulty that puts hashprice near $16.24, under Nigeria's line by $4.35. That is today's conditions held flat, not a forecast: it is why every projection we publish assumes the old high returns. At 22 J/TH, about 3.1¢ is the highest power rate that still clears across the halving, and efficiency decides how many halvings a machine survives.

At 22 J/TH, half of today's hashprice is under even Nigeria's line. Below about 3.1¢ it clears; above, it does not.

Chart: Network hashprice per petahash per day. This machine needs about $32 of it at 6¢ and about $21 at 3.9¢; half of today's level is about $16. Open the chart

What a fault costs you here

We looked for operator threads on the S19e XP Hyd and found none we could stand behind: the repair writing we found covers the S19 XP and S19 XP Hydro, and we will not stretch it to a different machine. The first price we hold is from February 2025, so it is scored as unknown on quality control rather than as good. That is a score, not a warning.

What a fault costs is the part that matters. In the UAE a manufacturer warranty centre is close to the facility, so in-warranty units go direct, and a failed hashboard is a line item, not a catastrophe. The guide to cooling explains what water changes.

Chart: Scored on what costs an owner money over a four-year life. Reliability is scored as unknown.

Our two cents

The S19e XP Hyd is one of the two cheap boxes in the water range, and it earns its place only on the cheapest power. At Nigeria's 3.9¢ it clears with room to spare today and makes a coin for about $52,500; at the UAE's 6¢ it is a machine at the margin.

If the aim is a cheap coin on water, the S21j XP Hyd or the S23 XP Hyd, covered in its outlook, make it for a fraction of the electricity. If the aim is the most terahash for the smallest cheque, and the power is Nigeria's, the S19 XP Hyd asks $3.05 a terahash at 20.8 J/TH and is the better of the two; after it, this is that machine. The figure below ranks what beats it on cost per coin and then on first-year return, in stock today.

What beats it on cost per coin and on first-year return, in stock today.

Sources and further reading

Which machines this covers

The other side of this machine

The Antminer S19e XP Hyd was less efficient than the S19 XP Hyd it was named for — Bitmain put it on sale in May 2024, just over two years after the S19 XP Hyd — and gave it a worse efficiency number, 22 J/TH against 20.8. We bought one once the price had settled, ran it at our water site, and it crossed to cheap power in Nigeria before it had spent a year there.

Disclosure

Firsthand Bitcoin sells and hosts mining hardware, including this machine. No manufacturer, distributor or affiliate programme paid for or reviewed this page and we take no commission on the links above. Historical figures are computed from daily bitcoin price and network hashprice, each day valued at its own prices. Nothing here is investment advice.