Bitmain Antminer S23 Immersion (442TH)

442 TH/s of SHA-256 hashrate at 5,304W continuous power draw and 12 J/TH efficiency. Bitmain's immersion variant supports wider tuning profiles than air or hydro variants: hashrate range 368 to 442 TH/s at 4,048 to 5,304W power envelope with ±5% hashrate tolerance and ±10% power tolerance (broader than the ±3% hashrate and ±5% power of other S23 variants). The wider tolerance reflects immersion fluid thermal performance variability across deployment configurations and fluid selections.

Immersion cooling submerges the entire miner in a non-conductive dielectric fluid that absorbs heat directly from all components simultaneously. No fans are needed, no air circulation, no dust ingress, no fan maintenance. Air cooling uses fans to move heat from components to surrounding air, requiring HVAC facility cooling of that heated air. Hydro cooling uses sealed water channels inside the chassis to transfer heat to an external water loop, keeping the chassis itself air neutral but requiring plumbing infrastructure. Immersion eliminates both air and sealed water approaches by submerging the hardware directly in thermal transfer fluid. Each approach has deployment tradeoffs: air is simplest and lowest CapEx, hydro delivers best compact efficiency, immersion delivers best longevity and heat reuse but highest CapEx for tank infrastructure.

Yes, completely fanless once submerged in dielectric fluid. The chassis ships without internal cooling fans because fluid submersion provides direct heat transfer from all components. No fan failures, no fan noise, no fan replacement costs, no fan related airflow obstruction, no fan vibration stress on components. The miner sits silent inside the immersion tank. External cooling infrastructure (circulation pumps, dry cooler or heat exchanger) adds its own acoustic signature separate from the miner itself.

Yes, meaningfully. MillionMiner documentation references up to 50 percent extended hardware lifespan through zero dust ingress and consistent chip temperature. The physics: air cooled chip temperatures typically fluctuate 10 to 20 degrees Celsius with varying ambient conditions and load profiles, creating thermal expansion and contraction stress on chip packaging, solder joints, and internal bonds. Immersion fluid thermal mass holds chips within 2 to 5 degree Celsius variation, dramatically reducing thermal cycling stress. Dust elimination removes another wear mechanism entirely (dust contamination is a leading cause of heatsink and fan failures in air cooled deployments). Combined, these factors extend practical deployment lifespan from typical 3 to 4 years on air cooled hardware to 5 to 7 years on immersion.

Substantial CapEx beyond miner acquisition. Immersion tank infrastructure: single phase tank ($2,000 to $10,000 per tank depending on size and quality), two phase tank ($15,000 to $50,000 per tank for premium deployment). Dielectric fluid: Shell Diala ($2 to $4 per liter at scale), ElectroCool ($15 to $30 per liter), Novec ($50 to $200 per liter). Single phase tank holding 8 miners typically requires 200 to 400 liters of fluid. Circulation pumps ($1,500 to $5,000 per tank). Dry cooler or water to dielectric heat exchanger ($5,000 to $25,000 per rack depending on capacity). Fluid monitoring and management systems ($1,000 to $10,000 per deployment). 380 to 415V three phase electrical service installation ($5,000 to $20,000 per facility). Total CapEx per miner for greenfield immersion deployment: typically $4,000 to $12,000 beyond miner acquisition cost.

Per MillionMiner documentation, three primary compatible fluid categories. Shell Diala: mineral oil based, lowest acquisition cost (typically $2 to $4 per liter at scale), widely available globally, moderate thermal conductivity, environmentally benign, biodegradable. ElectroCool: engineered synthetic fluid, higher thermal conductivity than mineral oil, better long term chemical stability, moderate acquisition cost ($15 to $30 per liter), marketed specifically for data center immersion applications. 3M Novec (fluorinated engineered fluid category): exceptional thermal performance and fire safety characteristics, highest acquisition cost ($50 to $200 per liter), environmental concerns with PFAS class compounds, regulatory uncertainty in EU and several US states. Fluid selection balances capital cost, operational characteristics, long term supply availability, and environmental considerations.

Yes, productively. Captured heat at 40 to 55 degrees Celsius dielectric fluid temperature supports multiple applications. Building heating through water to water heat exchangers integrated with hydronic heating systems (radiators, in floor heating, forced air furnace preheating). Greenhouse climate control in agricultural operations. District heating integration in urban deployments where municipal heating infrastructure exists. Industrial process preheating in manufacturing facilities (water preheating, washing systems, drying operations). Aquaculture water temperature management. Multiple European mining operations (Norway, Sweden, Germany, Netherlands) monetize waste heat through greenhouse partnerships and residential heating contracts, converting mining heat from disposal cost to revenue stream worth $500 to $2,000 annually per miner in favorable configurations. Heat reuse transforms miner TCO economics meaningfully in geographically appropriate deployments.

Sensitive to electricity rate and heat reuse capture. MillionMiner $0.08 per kWh onsite calculator: $14.38 daily revenue, $10.18 electricity, $4.20 daily net profit. Mining Now February 2026 at $0.07 per kWh: $15.84 daily revenue, $8.91 electricity, $7.92 daily net. ASIC Miner Value at $0.00 per kWh reference (free electricity): $10.24 daily profit (showing gross revenue baseline). OneMiners April to August 2025 data at $0.04 per kWh industrial hosting: $14 to $20 daily earnings, averaging $16.82. ROI estimates 1,210 to 1,515 days at $0.07 per kWh per Mining Now, compressed to 8 to 14 months at $0.04 per kWh industrial hosting per OneMiners. Heat reuse capture adds $500 to $2,000 annual value per miner in favorable configurations, meaningfully improving lifetime economics above pure mining revenue.

No. The 380 to 415V three phase power requirement excludes residential electrical service in most regions. The immersion tank infrastructure, dielectric fluid capacity, and external cooling systems are impractical for residential installation. The fluid fire safety and environmental management requirements require industrial facility infrastructure. This is strictly industrial hardware for professional mining facilities and commercial data centers with immersion infrastructure. For home deployment, the Antminer S21+ Hydro 395TH with universal 100 to 240V single phase voltage represents the residential hydro ceiling, or the Antminer S21 XP 270TH air cooled for standard single phase residential mining.

Different cooling approaches with distinct deployment tradeoffs. S23 Immersion 442TH (this product): 442 TH/s at 5,304W and 12 J/TH, tank submerged in dielectric fluid, zero fans, 50 percent extended lifespan, heat reuse capable, requires immersion tank infrastructure. S23 Hydro 580TH: 580 TH/s at 5,510W and 9.5 J/TH, standalone chassis with sealed internal water channels, requires external hydro loop with dry cooler, 26 percent better efficiency at 32 percent more hashrate per unit. The S23 Hydro wins decisively on efficiency and raw hashrate per unit. The S23 Immersion wins on hardware lifespan, maintenance simplification, heat reuse economics, and deployment model for facilities already committed to immersion infrastructure. For greenfield deployments, the S23 Hydro typically delivers better 3 to 5 year economics through efficiency alone. For operators with immersion infrastructure or quantifiable heat reuse value, the S23 Immersion delivers better 7+ year economics through extended lifespan and secondary revenue.

Same generation, different cooling and performance tiers. S23 Immersion 442TH (this product): 442 TH/s at 5,304W and 12 J/TH, fanless tank deployment. S23 Air 318TH: 318 TH/s at 3,498W and 11 J/TH, air cooled with fans. The S23 Immersion delivers 39 percent more hashrate per unit with 9 percent worse per chip efficiency. The S23 Air delivers lower acquisition cost, simpler deployment (standard air cooled rack), and lower infrastructure CapEx. The S23 Immersion delivers zero fan noise, zero dust maintenance, extended hardware lifespan, and heat reuse capability. For small to medium deployments without existing immersion infrastructure, the S23 Air typically wins on total deployment cost. For large deployments where immersion CapEx amortizes across many units, the S23 Immersion wins on operational economics.

380 to 415V three phase industrial power service. At 415V three phase: approximately 7.4 amps per phase continuous at 5,304W draw. At 380V three phase: approximately 8 amps per phase continuous. Fits standard 16 amp three phase breakers with meaningful headroom. Power infrastructure requirements are less demanding than the 3U petahash class hardware (S23 Hyd 3U at 11,020W) but still require industrial three phase service unavailable in residential configurations. Strictly industrial hardware for professional data center and dedicated mining facility deployment.

Industrial deployment with three phase power and immersion tank infrastructure. Step one: install dedicated 380 to 415V three phase electrical service with appropriate breaker capacity. Step two: install immersion tank with dielectric fluid (Shell Diala, ElectroCool, or Novec) and external cooling loop with dry cooler or water to dielectric heat exchanger. Step three: mount the S23 Immersion units in tank racking infrastructure with appropriate fluid gaps for convective circulation. Step four: fill tank with dielectric fluid to specified level, verify proper immersion depth for all components. Step five: connect three phase power cables and Ethernet management through sealed fluid penetrations. Step six: power on, find miner IP through DHCP, open Bitmain web interface, configure pool URL and Bitcoin wallet, verify hashrate reaches 420+ TH/s (or tuning target) within 15 to 20 minutes per unit. Step seven: configure heat reuse loop integration if applicable to deployment.

Substantially reduced versus air cooled equivalents due to fanless operation and dust elimination. Quarterly dielectric fluid quality testing (acidity, moisture content, particulate levels). Semi annual visual inspection of tank fittings and electrical penetrations for leaks or corrosion. Annual circulation pump and dry cooler inspection. Fluid replacement every 3 to 5 years depending on fluid chemistry and deployment conditions (versus 12 to 24 months on hydro systems). Hashboard failure rates on immersion units run meaningfully lower than air cooled equivalents due to consistent chip temperatures and zero dust contamination. Zero fan maintenance, zero dust cleaning, zero airflow adjustments. Budget 2 to 3 percent of acquisition cost annually for maintenance reserves (lower than hydro or air cooled equivalents).

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.

365 day Bitmain factory warranty per BT-Miners documentation on new units. MillionMiner's extended product description references 6 month manufacturer warranty, reflecting potential warranty term variation across batches or distributor channels. OneMiners references extended warranty to 7 years for hosted deployments. Warranty exclusions include damage from dielectric fluid contamination or neglect, improper fluid selection outside compatible list, leaks in tank infrastructure, power surge damage from inadequate electrical protection, operation outside specified environmental ranges, and unauthorized firmware modifications. Document fluid testing schedule and maintenance records to protect warranty coverage. Verify current warranty terms with MillionMiner at time of purchase.

Yes. MillionMiner operates managed hosting facilities with 380 to 415V three phase industrial power and immersion cooling infrastructure capable of supporting S23 Immersion deployments. Hosted deployment eliminates facility infrastructure CapEx (three phase electrical service, immersion tank installation, dielectric fluid acquisition, external cooling infrastructure) and leverages negotiated industrial electricity rates typically $0.04 to $0.06 per kWh. At $0.04 per kWh hosting rates, OneMiners documents $14 to $20 daily earnings per unit during April to August 2025 operational data. Contact MillionMiner sales through the Get a Quote button for hosting pricing and deployment timelines.

Any Stratum compatible Bitcoin pool. Foundry USA leads by network hashrate share. F2Pool has the longest operational track record. AntPool is the native Bitmain ecosystem pool with deep firmware integration. ViaBTC offers accumulation mode payouts. Luxor supports hashrate derivatives products. For fleet deployments above 3 PH/s (equivalent to 7+ units or a single immersion tank), direct negotiated agreements with major pools typically secure reduced fees below standard 1 to 2 percent rates.

CapEx beyond miner acquisition: three phase electrical service installation ($5,000 to $20,000 per facility), immersion tank infrastructure ($2,000 to $50,000 per tank depending on size and sophistication), dielectric fluid fill (200 to 400 liters per 8 unit tank at $2 to $200 per liter depending on fluid selection), circulation pumps and heat exchange infrastructure ($5,000 to $25,000 per rack), fluid monitoring and management systems ($1,000 to $10,000 per deployment). Total immersion CapEx per miner: typically $4,000 to $12,000 beyond miner cost for greenfield deployment. Annual OpEx per unit at 5,304W continuous: electricity at $3,717 at $0.08 per kWh, $3,253 at $0.07 per kWh, $1,858 at $0.04 per kWh industrial hosting rates. Dielectric fluid maintenance ($100 to $500 annually per unit at scale). Spare parts reserves (2 to 3 percent of acquisition annually, lower than air cooled). 3 year TCO per unit at $0.07 per kWh self hosted: approximately $11,096 hardware plus $9,759 electricity plus $800 maintenance plus $5,000 immersion infrastructure amortization equals $26,655 total. 3 year gross revenue at $0.07 per kWh profitability: $8,700 to $13,000. Heat reuse capture adds $1,500 to $6,000 across 3 years in favorable configurations, meaningfully improving 3 year economics.

Within Bitmain S23 generation: S23 Hydro 580TH for flagship efficiency standalone hydro, S23 Hyd 3U 1.16 PH/s for petahash 3U hydro, S23 Air 318TH for air cooled deployment, S23E Hyd 2U 865TH for tier alternative, S21 XP+ Hyd 500TH for premium S21 generation mid tier. Within Bitmain S21 generation: S21 XP Hydro 473TH for universal voltage compact hydro, S21+ Hydro 395TH for universal voltage lower tier, S21e XP Hyd 3U 860TH for 3U value play. For operators diversifying across manufacturers in immersion: Whatsminer M73S+ 540TH represents MicroBT's rack mount tier, Whatsminer M79S 1.35 PH/s represents high power hydro alternative. For operations building modular infrastructure: Proto Rig 819 TH/s provides Block's 10+ year chassis modular architecture as alternative long lifespan deployment model. Cross algorithm fleet diversification: Antminer KS7 for Kaspa, Antminer L11 for Litecoin and Dogecoin merged mining, IceRiver AE3 for Aleo, Antminer Z15 for Zcash, Bitdeer SealMiner A3 Pro Hydro for NASDAQ listed manufacturer alternative. MillionMiner's ASIC hosting service accepts S23 Immersion units at negotiated industrial electricity rates with full immersion tank infrastructure included.