Bitmain Antminer S23 (318TH)

318 TH/s of SHA-256 hashrate at 3,498W continuous power draw and 11 J/TH efficiency. ±5% hashrate tolerance (302 to 334 TH/s real output) and ±10% power tolerance. This is Bitmain's current generation air cooled Bitcoin miner, sharing chip architecture with the S23 Hydro 580TH, S23 Hyd 3U 1.16 PH/s, and S23 Immersion 442TH variants. The air cooled variant delivers 16 percent worse efficiency than the 9.5 J/TH hydro siblings in exchange for dramatically simpler deployment without liquid cooling infrastructure.

Meaningful efficiency improvement across the generation. S23 Air at 11 J/TH represents approximately 21 percent efficiency improvement over Antminer S21 XP 270TH at 13.5 J/TH air cooled, and approximately 27 percent improvement over Antminer S21+ at 17.5 J/TH. At $0.07 per kWh industrial rates across a 3 year deployment, the S23 efficiency advantage translates to approximately $2,000 to $3,500 in electricity savings per unit versus equivalent S21 series hardware. The efficiency math alone justifies S23 acquisition over discounted S21 inventory in most deployment scenarios.

Any SHA-256 proof of work cryptocurrency. Bitcoin (BTC) is the primary target. Other compatible coins include Bitcoin Cash (BCH), Bitcoin SV (BSV), Fractal Bitcoin (FB), Namecoin (NMC), DigiByte (DGB SHA-256 chain). Merged mining BTC alongside BCH and BSV through supporting pools (ViaBTC, F2Pool) adds marginal secondary revenue without reducing Bitcoin hashrate contribution.

Yes, the S23 ships from MillionMiner with the matched Bitmain PSU rated for the miner's 3,498W continuous draw, along with power cables and quick start guide. The PSU accepts 220 to 277V single phase input compatible with standard commercial and residential industrial electrical service. No separate PSU acquisition required.

220 to 277V single phase input. At 240V: approximately 15 amps continuous. At 277V: approximately 13 amps continuous. A single 20 amp 240V circuit handles one unit with comfortable headroom. No three phase service required. This single phase compatibility is a key differentiator from the S23 Hydro, S23 Hyd 3U, and S23 Immersion variants, which all require 380 to 415V three phase industrial service. The single phase requirement makes the air cooled S23 deployable in facilities without three phase infrastructure.

Air cooling through four high speed internal fans. No external water loops, no immersion tanks, no dielectric fluid, no plumbing infrastructure. Facility requirements: proper ventilation for 11,900 BTU per hour heat output per unit, adequate intake and exhaust air, ambient temperature within 5 to 45 degrees Celsius. For multi unit deployment in enclosed spaces, HVAC capacity must match aggregate BTU output. For well ventilated dedicated mining spaces, natural convection or simple exhaust fans typically suffice for 1 to 4 unit deployments.

With proper infrastructure, yes. The 220 to 277V single phase power is compatible with standard 240V residential industrial service in North America (electric dryer or EV charging circuits) and 230V commercial service globally. Home deployment requirements: dedicated 20 amp 240V circuit, sound isolated space (garage, outbuilding, basement) because 75 dB is disruptive through walls, adequate ventilation for 11,900 BTU heat rejection, ambient temperature management during summer operation. The S23 is meaningfully more home deployable than hydro or immersion variants but still requires dedicated mining infrastructure beyond casual home office deployment.

75 dB through four internal cooling fans. Comparable to a vacuum cleaner or busy restaurant noise level. Disruptive through walls and not suitable for living space adjacency. Requires sound isolated deployment space: dedicated mining room, garage, outbuilding, basement with insulation, or commercial facility space. For noise sensitive deployments, the S23 Hydro or S23 Immersion variants at 50 dB represent quieter alternatives with their cooling tradeoffs.

Mining Now February 2026 at $0.07 per kWh: $11.92 daily revenue, $5.88 electricity, $6.04 daily net profit. MillionMiner $0.08 per kWh onsite calculator: $10.42 daily revenue, $6.72 electricity, $3.71 daily net. OneMiners at $0.04 per kWh industrial hosting: $8 to $11 daily earnings, averaging $9.09, with 22 to 30 month ROI per current data. Ultramining May 2025 at $0.045 per kWh: $13.93 daily. ROI estimates 1,189 to 1,578 days at $0.07 per kWh per Mining Now, compressed to 22 to 30 months at $0.04 per kWh industrial hosting. Economic viability tightens at electricity rates above $0.08 per kWh.

Deployment simplicity versus efficiency and hashrate. S23 Air 318TH (this product): 318 TH/s at 3,498W and 11 J/TH, single phase 220 to 277V, four cooling fans, $8,103 acquisition, no cooling infrastructure CapEx. S23 Hydro 580TH: 580 TH/s at 5,510W and 9.5 J/TH, three phase 380 to 415V industrial, external water loop required, $14,299 acquisition plus $5,000 to $25,000 cooling infrastructure CapEx. The S23 Hydro delivers 82 percent more hashrate and 16 percent better efficiency but requires infrastructure commitment and higher acquisition cost. For operators with existing hydro infrastructure or commitment to build it, S23 Hydro wins. For operators wanting current generation silicon without infrastructure buildout, S23 Air wins.

365 day Bitmain factory warranty on the complete machine covering manufacturing defects and hardware failures under normal operation within specified environmental ranges per BT-Miners and CryptoMinerBros documentation. Warranty exclusions include damage from operation outside specified environmental ranges (temperature above 45°C or humidity above 90%), power surge damage from inadequate electrical protection, physical damage during installation, and unauthorized firmware modifications. MillionMiner routes warranty claims through direct Bitmain channels.

Yes, MillionMiner ships with free DDP (Delivered Duty Paid) worldwide delivery. This means MillionMiner covers all customs clearance, import duties, and taxes for your delivery address. You receive the miner ready for deployment without additional customs costs or paperwork. DDP service is particularly valuable for first time buyers in jurisdictions with complex customs procedures or high import duty rates where traditional EXW or FOB shipping can add 10 to 25 percent to landed cost.

Yes. MillionMiner operates managed hosting facilities with reliable industrial electrical service, proper ventilation for air cooled hardware, 24/7 monitoring, and technical support. Hosted deployment eliminates facility infrastructure CapEx and leverages negotiated industrial electricity rates typically $0.04 to $0.06 per kWh. At $0.04 per kWh hosting rates, OneMiners documents $8 to $11 daily earnings per unit. Contact MillionMiner sales through the Get a Quote button for hosting pricing and deployment timelines.

Simplest deployment in the S23 family. Step one: verify 220 to 277V single phase 20 amp circuit with grounded outlet. Step two: connect PSU to miner then to electrical outlet. Step three: connect Ethernet cable from miner to router or switch. Step four: find miner IP through router DHCP client list or IP scanner tool. Step five: open browser, enter miner IP, login to Bitmain web interface, configure pool URL and Bitcoin wallet address. Step six: verify hashrate reaches 300+ TH/s within 10 to 15 minutes. Total setup time for single unit: typically 20 to 30 minutes.

Generational progression. S23 Air 318TH: 318 TH/s at 3,498W and 11 J/TH, current generation. S21 XP 270TH: 270 TH/s at 3,645W and 13.5 J/TH, prior generation. The S23 delivers 18 percent more hashrate, 4 percent lower power draw, and 19 percent better efficiency. At $0.07 per kWh industrial rates over 3 year deployment, the efficiency advantage alone saves approximately $800 to $1,200 per unit versus S21 XP hardware, plus the revenue benefit of 18 percent more hashrate. Economics favor S23 Air over discounted S21 XP in most deployment scenarios unless S21 XP acquisition cost is meaningfully below 80 percent of S23 Air pricing.

Any Stratum compatible Bitcoin pool. Foundry USA leads by network hashrate share. F2Pool has the longest operational track record and supports merged mining. AntPool is the native Bitmain ecosystem pool. ViaBTC offers accumulation mode payouts. Braiins Pool (formerly Slush Pool) supports the oldest reputation and Braiins OS+ firmware optimization. For individual unit operators, pool selection primarily affects payout structure and fees rather than profitability meaningfully.

Yes. Braiins OS+ supports the S23 family with autotuning capabilities that can improve efficiency by 5 to 15 percent through per chip frequency optimization versus stock Bitmain firmware. Vnish and LuxOS also support S23 hardware with similar tuning capabilities. Third party firmware typically requires paid licenses ($2 to $5 per TH per year) but the efficiency gains often offset the license cost at industrial scale. Note: third party firmware voids Bitmain warranty. Operators typically run stock firmware during warranty period and consider third party firmware after warranty expiration.

Standard air cooled ASIC maintenance. Monthly visual inspection of cooling fans for dust buildup and bearing wear. Quarterly dust cleaning using compressed air through intake vents. Annual fan replacement typical for heavily used hardware (fans are the most common failure point in air cooled ASICs). Temperature monitoring through Bitmain firmware to detect thermal anomalies early. Budget 2 to 4 percent of acquisition cost annually for maintenance reserves. Dust management is critical: facilities with high dust environments may require more frequent cleaning or improved intake filtration.

Simpler TCO math than liquid cooled variants. CapEx: $8,103 miner acquisition, minimal facility infrastructure (existing single phase electrical service sufficient). Annual OpEx per unit at 3,498W continuous: electricity at $2,452 at $0.08 per kWh, $2,146 at $0.07 per kWh, $1,226 at $0.04 per kWh industrial hosting rates. Fan and parts maintenance ($150 to $400 annually per unit). 3 year TCO per unit at $0.07 per kWh self hosted: approximately $8,103 hardware plus $6,438 electricity plus $750 maintenance equals $15,291 total. 3 year gross revenue at $0.07 per kWh profitability: approximately $6,600 to $9,900.

Within Bitmain S23 generation: S23 Hydro 580TH for higher efficiency standalone hydro, S23 Hyd 3U 1.16 PH/s for flagship 3U petahash, S23 Immersion 442TH for tank deployment with heat reuse, S23E Hyd 2U 865TH for 2U rack tier. Within Bitmain S21 generation (prior generation alternatives at discounted pricing): S21 XP 270TH for air cooled prior generation, S21 XP Hydro 473TH for universal voltage hydro, S21+ Hydro 395TH for universal voltage lower tier hydro, S21 XP+ Hyd 500TH for premium S21 generation mid tier, S21e XP Hyd 3U 860TH for legacy 3U value play. For operators diversifying across manufacturers: Whatsminer M70 series for MicroBT air cooled alternatives, Bitdeer SealMiner A3 Pro Air 290TH for NASDAQ listed manufacturer alternative. Cross algorithm fleet diversification: Antminer KS7 for Kaspa, Antminer L11 for Litecoin and Dogecoin, IceRiver AE3 for Aleo. For modular long lifespan infrastructure: Proto Rig 819 TH/s provides Block's 10+ year chassis alternative. MillionMiner's ASIC hosting service accepts S23 Air units at negotiated industrial electricity rates.