Bitmain Antminer S23 Hydro 563 TH/s SHA-256 Bitcoin Miner

The Bitmain Antminer S23 Hydro 563TH is the water-cooled model in Bitmain's current-generation S23 platform, and it is the miner you buy when efficiency is the number that matters most. It delivers 563 TH/s of SHA-256 hashrate at 5,349W, which works out to 9.5 J/TH. That figure is a genuine milestone: the S23 generation was the first family of Bitcoin miners to break below 10 J/TH, and the hydro model leads it as one of the most efficient Bitcoin miners Bitmain has ever produced. Efficiency is the whole case for this machine, because in Bitcoin mining electricity is the largest ongoing cost, and a miner that turns more of every watt into hashrate earns more of every hour it runs. At 9.5 J/TH the S23 Hydro uses far less power per terahash than any air-cooled unit, and that advantage does not sit still: it compounds across every hour of operation and widens the margin of safety that keeps hardware profitable as network difficulty climbs, which is exactly why serious operators move to hydro at scale. The 563TH unit is one power bin of the S23 Hydro, running at 5,349W, and it sits alongside a 580TH bin at 5,510W; both deliver the same 9.5 J/TH and run on the same platform and the same infrastructure, so the choice between them is simply how much absolute hashrate and power you want per unit. What makes that efficiency possible is the cooling, and it is worth understanding how it differs from an air miner. Instead of high-RPM fans forcing air across heatsinks, the S23 Hydro circulates liquid coolant directly through the hashboards, and because water carries heat far more effectively than air, it pulls thermal load off the chips quickly and evenly. Three things follow from that. The unit holds full rated power without the thermal throttling that limits air miners in warm rooms; it runs quietly, since there are no screaming fans on the machine itself; and the chips stay cooler under sustained load, which reduces stress and extends working life. The S23 Hydro accepts common coolants including pure water, deionized water and antifreeze, and it is designed for a coolant flow of roughly 8 to 10 liters per minute at a pressure under 3.5 bar, with an inlet coolant temperature in the 20 to 50 degrees Celsius range. This is enterprise hardware, and the infrastructure it requires makes that clear. The S23 Hydro runs on three-phase 380 to 415V industrial power, and it needs a closed hydro cooling loop built around it: a coolant distribution unit, circulation pumps, a heat exchanger or dry cooler sized to the fleet, filtration and leak-safe fittings. That means it belongs in a facility that already has hydro infrastructure, or with a hosting provider equipped for liquid-cooled hardware, rather than in a home or a small air-cooled setup. What it is not is bulky. For the output it produces, the S23 Hydro is compact and light, measuring 410 by 170 by 209 mm and weighing about 13.5 kg, so a single technician can rack, plumb and service it, and it drops cleanly into an existing S23 or S21 hydro fleet running on the same cooling system. Because it shares its chip architecture with the rest of the S23 family, the air-cooled S23, the S23 Immersion and the S23 Hyd 3U, which doubles output to 1,160 TH/s in one chassis, it inherits the whole generation's firmware maturity and lets an operator mix cooling types under one management interface. The hydro design also concentrates more hashrate into less rack space than an air fleet of the same output, and because the heat comes off in liquid rather than hot exhaust air, sites with the right setup can capture and reuse it, which is part of why large operations standardize on hydro as they scale. On the pool side it mines Bitcoin first and hashes any SHA-256 coin, so Bitcoin Cash, Bitcoin SV and Fractal Bitcoin are all supported, with merged mining available through supporting pools, and it connects over Ethernet running stock Bitmain firmware with support for third-party firmware such as Braiins OS+ for per-chip tuning, though third-party firmware can affect warranty coverage. Every S23 Hydro 563TH ships with a 365-day Bitmain factory warranty and free worldwide DDP, so the checkout price is the final landed cost with all customs, duties and freight handled and nothing waiting at the border. From there you can run it in your own hydro site, or deploy the same hardware into our US hydro-capable facilities, where we cover power, cooling and uptime while the machine stays yours. Whether you are refreshing an S21 hydro fleet with more efficient silicon or building a new liquid-cooled operation around the lowest joules per terahash you can get, the Antminer S23 Hydro is Bitmain's efficiency flagship, and buying it from MillionMiner means verified specs, real support and transparent landed pricing.