The Bitmain Antminer S23 Hydro 3U is the rack version of the water-cooled S23 generation: a Bitcoin miner with 1.16 PH/s, that is 1,160 TH/s, in a housing three rack units high, shipping since the third quarter of 2026. Laid out for SHA-256, it mines Bitcoin or Bitcoin Cash. We carry it in the 1.16 PH/s level at 9.5 joules per terahash. The 3U weighs 42 kilograms, works without fans and needs a three-phase supply of 380 to 415 volts at 24 amps.
Performance levels of the Antminer S23 Hydro 3U
- S23 Hydro 3U 1.16 PH/s at 11,020 watts (BTM-S23HYD3U-116PH)
The 11,020 watts apply at 35 degrees Celsius water inlet. Per terahash the 3U is on a par with the S23 Hydro as a single machine, but it spreads the output over one rack housing with one power connection and one water connection.
Design, power connection and cooling of the S23 Hydro 3U
The housing measures 900 × 482.6 × 130 mm: three rack units across the full width of a 19-inch rack, which has to take 900 millimetres of depth. In the carton that becomes 1,150 × 640 × 260 mm and 48 kilograms. In operation the 3U stays at 50 dB; pumping happens outside, the cooler of the installation drives the loop through the machine.
The loop has to deliver 16 to 20 litres per minute at no more than 3.5 bar, through connectors with an outer diameter of 14 millimetres. Approved are antifreeze, pure water and deionised water, with pH values of 7.0 to 9.0, 6.5 to 7.5 and 8.5 to 9.5 respectively. The inlet lies between 20 and 50 degrees. If it freezes where the miner is operated, antifreeze must go into the loop without exception.
The 3U draws three-phase power at 380 to 415 volts, 50 to 60 hertz and up to 24 amps through an LP34 connector. An RJ45 socket at 10/100 Mbit links the 3U to the network. The unit is stored between minus 20 and 70 degrees and tolerates 10 to 90 percent humidity in operation.
As standard, Bitmain gives a 365-day factory warranty on the machine, counted from the shipping date; our standard price always includes our own warranty.
Comparison with the previous generation of the S23 Hydro 3U
In the same rack format it was preceded by the Antminer S21e XP Hydro 3U, the three-unit machine of the S21 generation. The two machines compared:
- Antminer S21e XP Hydro 3U: 13.0 J/TH (860 TH/s at 11,180 W)
- Antminer S23 Hydro 3U: 9.5 J/TH (1.16 PH/s at 11,020 W)
At practically the same draw per housing the figure per terahash falls from 13.0 to 9.5 joules. Anyone not filling racks finds the same technology as a single machine in the Antminer S23 Hydro. The miner comparison shows the 3U by daily revenue next to every other machine we carry.
Verdict: Bitcoin mining with the Antminer S23 Hydro 3U
We have little experience with the S23 generation so far. Like the whole range, the 3U is priced well above the previous models, which cost about half and are only slightly less efficient.
From eleven kilowatts and your electricity price the Bitcoin mining calculator makes the daily revenue of the 3U. Two figures keep shifting the result, the price and the Bitcoin network hashrate; the cockpit keeps both current and lists the Bitcoin mining pools with share and fees alongside.
