Antminer S23: specs of the whole series, what's new and who it's for

The Antminer S23 is a series of Bitcoin miners from Bitmain with an efficiency of 8.9–12 J/TH, i.e. 20 to 40% more economical than the S21 Pro (15 J/TH). The most widespread model is the water-cooled S23 Hyd (580 TH/s, 9.5 J/TH), which Bitmain unveiled in May 2025 and has been shipping since early 2026. The S23 series is not designed for home mining – these are data-centre machines.

Summary

• The S23 series includes an air-cooled version (318 TH/s, 11 J/TH), an immersion version (442 TH/s) and several water-cooled versions from 563 to 1,160 TH/s.
• The most efficient is the S23 XP Hyd at 8.9 J/TH, which Bitmain launched in August 2026 with deliveries from November 2026.
• As of 18 Oct 2026, Bitmain has not announced an “S23 Pro” model.
• At today's difficulty and exchange rate, the S23 Hyd 563 TH/s mines roughly CZK 473 a day and pays off up to an electricity price of about CZK 3.7/kWh.
• Hydro versions need a water circuit and a three-phase connection, which is why they are most often run in hosting.

Which models the Antminer S23 series includes

Bitmain releases the S23 in several versions depending on cooling. The specifications in the table are the manufacturer's (nominal) values; units on sale may differ by performance class – for example, our S23 Hyd delivers 563 TH/s at 5,349 W, i.e. the same 9.5 J/TH efficiency as the base version.

Earlier mentions of the immersion version gave two modes: 368 TH/s at 11 J/TH and a more powerful 442 TH/s at 12 J/TH. Current overviews mainly list the 442 TH/s version.

What's new in the S23 compared with the S21

The main change is efficiency. Per 1 TH/s, the S23 Hyd uses 37% less energy than the S21 Pro (15 J/TH) and 46% less than the original S21 (17.5 J/TH). The air-cooled S23 is 27% more economical than the S21 Pro.

In practice this means the S23 still makes money where older machines are already losing it. You can calculate the electricity price up to which a machine pays off as earnings per 1 TH/s ÷ (efficiency × 0.024). At today's 0,84 Kč per 1 TH/s a day, this gives:

The values apply at today's difficulty and exchange rate, as of 18 Oct 2026. We explain how J/TH is calculated and why it matters more to miners than hashrate alone in our article on ASIC power consumption and efficiency.

How much the Antminer S23 Hyd 563 TH/s earns

The calculation is straightforward: 563 TH/s × 0,84 Kč ≈ CZK 473 gross per day at today's difficulty and exchange rate, as of 18 Oct 2026. The machine uses 5.349 kW × 24 h = 128.4 kWh a day.

• In hosting at 1,13 Kč/kWh, electricity costs about CZK 145 a day, leaving roughly CZK 328.
• At CZK 3/kWh, electricity would cost CZK 385, leaving around CZK 88.
• Above CZK 3.7/kWh the machine loses money at today's figures.

For comparison: the air-cooled S21 Pro+ 245 TH/s mines about CZK 206 today and only pays off up to CZK 2.3/kWh. You will find current earnings and payback for all machines in our live profitability table.

What the water-cooled S23 Hyd needs

Hydro versions have no fans. Heat from the chips is carried away by a liquid that a pump drives to a dry cooler or heat exchanger. As a result they run at around 50 dB instead of 75 dB for air-cooled machines, and the heat can be reused, for example for space heating or hot water.

• Power: three-phase 380–415 V. A normal 230 V socket is not enough.
• Water circuit: a flow rate of 8–10 l/min is specified for the S23 Hyd 580 TH/s. The cooler must dissipate practically the entire power draw, i.e. roughly 5.5 kW of heat.
• Coolant: high quality, designed for closed circuits. Tap water will clog the circuit over time.
• Network: Ethernet connection.

We discuss the differences between air, water and immersion in detail in our article where air cooling reaches its limits.

Who the S23 series is for

• S23 Hyd and S23 XP Hyd – for operations with water infrastructure and for those who place the machine in ASIC miner hosting. Lowest consumption per TH/s, so the longest profitability.
• S23 Hyd 3U and S23e Hyd 2U – rack-mounted machines for large data centres with high power density per rack.
• S23 (air) – for farms without a water circuit that want the best available efficiency with air cooling. Its 75 dB noise level rules it out for living spaces.
• S23 Imm – for operations with immersion tanks.

If you currently run an S21 with cheap electricity, you don't need to switch right away. What matters is how far your electricity price is from your machine's break-even point. For home mining, it is better to look at quiet miners for the home.

What next

• Antminer S23 Hyd 563 TH/s – specifications, an earnings calculator for your electricity price, and hosting.
• Antminer S21 vs S21+ vs S21 Pro – differences in the previous generation if you are considering a cheaper machine.
• Most profitable ASIC miners – comparison of the S23 with machines for other coins by today's earnings.

Sources

• ForkLog: Bitmain unveils the S23 Hydro with 9.5 J/TH (28 May 2025)
• Million Miner: S23 XP Hyd and S23e U2H at WDMS 2026
• ASIC Miner Value: Antminer S23 318 TH/s – specifications
• D-Central: Antminer S23 Hyd – installation data