Bitmain Antminer S23 Hydro review
The efficiency benchmark at 9.5 J/TH: a 580 TH/s liquid-cooled 3U unit built for industrial racks and $0.04 power, not for home setups.
Bitmain Antminer S23 Hydro specifications
- Manufacturer
- Bitmain
- Released
- January 2026
- Hashrate
- 580 TH/s (3U unit); larger hydro units reach 1,160 TH/s
- Power draw
- 5,510 W
- Efficiency
- 9.5 J/TH
- Electricity per day
- 132.2 kWh
- Cooling
- Hydro (liquid loop)
- Noise
- Very low, liquid loop
- Algorithm
- SHA-256
- Estimated price
- $16,500 to $29,800
- Best for
- Industrial and data-center operations chasing the lowest J/TH on the market
Hashrate as sold: 580 TH/s (3U unit); larger hydro units reach 1,160 TH/s. The comparison table uses the nominal 580 TH/s rating.
Should you buy the Bitmain Antminer S23 Hydro?
The Antminer S23 Hydro is the most efficient SHA-256 miner you can buy, as of August 2026: 580 TH/s from 5,510 W works out to 9.5 J/TH, a figure no air-cooled machine on the market matches. Bitmain shipped it in January 2026 as a 3U rack unit, with larger hydro variants in the same family reaching 1,160 TH/s, and that efficiency lead is why an April 2026 daily-earnings comparison put it on top at roughly $31 per day at $0.04 per kWh.
Efficiency at that level is bought, not bundled. The unit costs $16,500 to $29,800 as of August 2026, and the hydro loop it depends on adds more: pumps, a dry cooler, treated coolant, and plumbing that has to carry away 5,510 W of heat continuously. The buyers who make those numbers work are mining firms and colocation data centers with power contracts near $0.04 per kWh, where the roughly 19 percent pullback in network hashrate since the November 2025 peak has widened margins for the lowest-cost operators.
If you mine at home, the honest read is admire it and skip it. Residential rates near $0.10 per kWh erase most of the efficiency advantage, the machine has no fans or standalone cooling of its own, and the purchase price covers several capable air-cooled miners plus months of their electricity. The S23 Hydro is the yardstick the rest of the market is measured against, but it was never designed to sit in a garage.
Pros and cons
What works
- 9.5 J/TH (5,510 W for 580 TH/s), the lowest energy per terahash of any SHA-256 miner sold as of August 2026
- Topped April 2026 daily-earnings comparisons at roughly $31 per day at $0.04 per kWh
- Very low noise because a liquid loop replaces the fan wall found on air-cooled Antminers
- 3U rack format concentrates 580 TH/s into a fraction of the space air-cooled fleets need
- Larger hydro variants in the same family reach 1,160 TH/s for operators pushing density further
What to watch
- $16,500 to $29,800 as of August 2026, before pumps, a dry cooler, coolant and plumbing are priced in
- Cannot run standalone at home; it has no fans and depends entirely on an external hydro loop
- At a residential $0.10 per kWh, electricity alone runs about $13.22 per day, wiping out most of the efficiency edge
- Resale is limited to a niche buyer pool, since only liquid-cooled facilities can deploy it
How the Bitmain Antminer S23 Hydro compares
Frequently asked questions
How loud is the Antminer S23 Hydro?
It is very quiet for a miner of this size because heat leaves through a liquid loop instead of high-speed fans. The noise moves to wherever your pumps and dry cooler sit, so you plan the loop's location, not the miner's.
How much does the S23 Hydro cost to run per day?
It draws 5,510 W, which is 132.2 kWh per day. At $0.10 per kWh that is 132.2 x 0.10, about $13.22 per day or roughly $397 per month. At the $0.04 industrial rate its economics assume, the same math gives about $5.29 per day.
Why do data centers buy 3U hydro units like this instead of racks of air-cooled miners?
Because density and efficiency compound. One 3U S23 Hydro delivers 580 TH/s at 9.5 J/TH, so a facility gets more hashrate per rack and per megawatt, and a shared liquid loop removes heat more cheaply at scale than moving air through hundreds of fans.
Should I buy the S23 Hydro for home mining?
No, in almost every case. The $16,500 to $29,800 price as of August 2026 only pays off at industrial power rates, the unit cannot cool itself, and a hydro loop means real plumbing. Admire the spec sheet and buy air-cooled instead.