Bitmain Antminer S21 XP

 

ASIC Model series:	ASIC Release:	Hashrate:	ASIC Power:		ASIC Algo:
Bitmain Antminer S21e XP Hyd 3U	Jan 2025	860Th/s	11180W		SHA-256
Bitmain Antminer S21 XP Hyd	Nov 2024	473Th/s	5676W		SHA-256
Bitmain Antminer S21e XP Hyd	Nov 2024	430Th/s	5590W		SHA-256
Bitmain Antminer S21 XP+ Hyd	Jul 2025	500Th/s	5500W		SHA-256
Bitmain Antminer S21 XP Imm.	Oct 2024	300Th/s	4050W		SHA-256
Bitmain Antminer S21 XP	Oct 2024	270Th/s	3645W		SHA-256

Modified ASIC Firmware for Antminer S21 XP series
(12-15% improvement) download here

 

Bitcoin Bitmain Antminer S21 XP Series

The ASIC Bitmain Antminer S21 XP series is Bitmain’s high‑end lineup of SHA‑256 ASIC miners tailored for professional Bitcoin mining in 2026 . Designed for continued innovation in mining efficiency and hashrate performance, this series includes six distinct models , each suited to specific mining environments — whether you prefer cost‑effective air cooling or advanced liquid/immersion solutions.

All ASIC Bitmain Antminer S21 XP models use the SHA‑256 algorithm , making them optimal for Bitcoin (BTC) , Bitcoin Cash (BCH) , and Bitcoin SV (BSV) mining.

Antminer S21 XP Series

The ASIC Bitmain Antminer S21 XP series represents one of the most competitive SHA‑256 ASIC miner generations available, with wide variation in hashrate, cooling, and power requirements to accommodate different mining scales — from professional small operations to enterprise‑grade installations.

Each model in the series is produced by Bitmain , one of the most influential ASIC manufacturers in the world, known for its Antminer line that has dominated Bitcoin mining hardware for years. The S21 XP series extends this tradition with updated architectures and cooling technologies. 

All Models in the Bitmain Antminer S21 XP Series

Below is a breakdown of each of the six models in the S21 XP series, including their hashrate , power consumption , cooling type , release timing , and other relevant details:

S21 XP (Air‑Cooled Standard Model)

The ASIC Bitmain Antminer S21 XP is the base model of the S21 XP series, featuring air cooling for simpler setups and easier deployment in conventional mining farms.

• Hashrate: ~ 270 TH/s

• Power Consumption: ~ 3,645 W

• Energy Efficiency: ~ 13.5 J/TH

• Algorithm: SHA‑256 (Bitcoin, BCH, BSV) 

• Cooling: Air‑cooled

• Typical Use: Standard professional mining farms without liquid‑cooling infrastructure

This model strikes a balance of accessibility and power, making it suitable for miners who require modern performance without specialized cooling.

ASIC Bitmain Antminer S21 XP Hyd (Liquid‑Cooled Model)

The ASIC Bitmain Antminer S21 XP Hyd introduces hydro‑cooling to the series, significantly improving thermal management and sustained performance.

• Hashrate: ~ 473 TH/s

• Power Consumption: ~ 5,676 W

• Efficiency: ~ 12.7 J/TH

• Algorithm: SHA‑256

  Cooling: Hydro‑cooling (liquid) (

• Release: ~ Late 2024 / Early 2025

Hydro‑cooling reduces noise and improves consistency under heavy loads — ideal for larger professional installations that want cleaner thermal control without total immersion. 

 

ASIC Bitmain Antminer S21 XP+ Hyd (Enhanced Hydro Model)

The ASIC Bitmain Antminer S21 XP+ Hyd is a step up from the standard hydro model, offering a higher hashrate and better efficiency:

• Hashrate: ~ 500 TH/s

• Power Consumption: ~ 5,500 W

• Energy Efficiency: ~ 11.0 J/TH

  Algorithm: SHA‑256

• Cooling: Hydro‑cooling (liquid)

• Release: ~ March 2025

This model is often viewed as the top performing hydro‑cooled miner in the S21 XP line, delivering strong hash power while keeping power draw relatively optimized.

 

ASIC Bitmain Antminer Antminer S21e XP Hyd

 

 

The ASIC Bitmain Antminer S21e XP Hyd is a slightly scaled hydro‑cooled variant, providing a competitive mix of hash power and energy use for mid‑range operations:

• Hashrate: ~ 430 TH/s

• Power Consumption: ~ 5,590 W

• Energy Efficiency: ~ 13 J/TH

• Algorithm: SHA‑256

• Cooling: Hydro‑cooling (liquid)

This model fills the gap between the base hydro model and the more powerful XP+ Hyd, making it an option for teams that want hydro benefits with a more moderate hash target.

 

ASIC Bitmain Antminer S21e XP Hyd 3U (Rack‑Optimized Hydro)

The ASIC Bitmain Antminer S21e XP Hyd 3U is a large hydro‑cooled rack unit intended for industrial deployments and high‑density rack environments:

• Hashrate: ~ 860 TH/s

• Power Consumption: ~ 11,180 W

• Algorithm: SHA‑256

• Cooling: Hydro‑cooling

• Release: ~ December 2024 / January 2025

With an extremely high hashrate and 3U form factor designed for rack deployment, this miner targets large mining operations where density and cooling efficiency are critical. 

ASIC Bitmain Antminer S21 XP Imm (Immersion‑Ready Model)

The ASIC Antminer S21 XP Imm is designed for immersion cooling , where the miner is submerged in dielectric fluid for optimal heat dissipation and sustained performance:

• Hashrate: ~ 300 TH/s

• Power Consumption: ~ 4,050 W

• Energy Efficiency: ~ 13.5 J/TH

• Algorithm: SHA‑256

• Cooling: Immersion cooling

This model is perfect for miners using advanced immersion solutions , which drastically reduces thermal issues and reduces dependency on air or liquid cooling hardware.

Hashrate, Power, and Efficiency Summary of the S21 XP Series

Each model in the ASIC Bitmain Antminer S21 XP series has been designed to target a specific balance of hashrate, power consumption, and cooling method :

• Air‑cooled S21 XP: Best for simpler setups

• Hydro models ASIC Bitmain Antminers(S21 XP Hyd, S21e XP Hyd, S21 XP+ Hyd): Mid to high hashrate with liquid cooling

• S21e XP Hyd 3U: Highest hashrate targeted at industrial racks

• S21 XP Imm: Optimal for immersion cooling setups

This variation allows miners to choose hardware that best fits their infrastructure and electricity pricing. 

Bitcoin ASIC SHA‑256 Algo

All models in the ASIC Bitmain Antminers S21 XP series use the SHA‑256 algorithm, making them capable of mining:

• Bitcoin (BTC)

• Bitcoin Cash (BCH)

• Bitcoin SV (BSV)

• Other SHA‑256-based cryptocurrencies

While Bitcoin remains the most profitable due to its liquidity and network security, miners may choose to mine other SHA‑256 coins depending on price and network conditions.

Bitcoin Mining Pools for ASIC Bitmain Antminer S21 XP Series

Given the high global difficulty of SHA‑256 networks, solo mining is not realistic for most users. These miners perform best when connected to established mining pools, which allow consistent rewards based on contributed hashrate. Popular pools include:

• AntPool

• F2Pool

• ViaBTC

• BTC.com

• Slush Pool

Mining pools help distribute network rewards fairly and reduce the variance that comes with solo mining, ensuring miners achieve predictable returns.

ASIC Bitmain Antminer S21 XP Series (2026)

The ASIC Bitmain Antminer S21 XP series combines a wide range of hashrates, cooling systems, and power profiles to meet the needs of varying mining operations. Whether you prefer the simplicity of air cooling (S21 XP) or the performance gains of hydro or immersion cooling (S21e XP Hyd 3U, S21 XP Imm), this family offers specialized ASIC miners for professional Bitcoin mining in 2026 .

Practical Use Cases of ASIC for Bitcoin

The ASIC Bitmain Antminer S21 XP series is suited for professional miners and mining farms due to its high hashrate, energy efficiency, and cooling versatility. Typical use cases include:

• Bitcoin mining with SHA‑256 coins

• Participation in large mining pools for consistent payouts

• Enterprise-scale mining facilities with hydro or immersion setups

• Medium-scale operations for air-cooled miners with standard power infrastructure

The variety of models allows miners to select machines that match their infrastructure, electricity pricing, and desired ROI.

Profitability Considerations ASIC Bitmain Antminer S21 XP

Profitability depends on:

• Electricity costs (the most critical factor)

• Bitcoin market price and difficulty

• Mining pool fees and uptime

• Cooling efficiency and operational reliability

Air-cooled models have lower upfront costs, while hydro and immersion variants offer better efficiency and long-term stability, which can improve ROI in industrial operations.