Bitmain Antminer S21+ (235Th)

Antminer S21+ profitability insights powered by real-time data: Discover how much your Antminer S21+ can earn using our advanced ASIC miner calculator. We use live mining reward data and automatically factor in electricity costs, giving you a clear overview of your potential daily, monthly, and yearly returns.

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Released: January 2025
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Manufactured by
Bitmain
Bitmain Antminer S21+ (235Th)
Realtime Mining Profit
$3.18/day
235TH/s
Hashrate
3875.5W
Power

Profitability Analysis

Live Data

Here you can see a detailed analysis of miner profitability, updated in real-time.

Current BTC Price $101,589.00
Period Income Expense Profit
Daily
$10.62 $7.44
$3.18
Monthly
$318.63 $223.23
$95.40
Yearly
$3,876.65 $2,715.95
$1,160.70
No Offer available

About the Bitmain Antminer S21+ (235TH/s)

Learn more about this ASIC miner, including its specifications, performance, energy consumption, and profitability.

The Bitmain Antminer S21+ (235Th) presents itself as a purpose-built instrument for the SHA-256 mines, delivering a raw hashrate of 235 terahashes per second while drawing roughly 3,877 watts and achieving an energy efficiency near 16.5 joules per terahash; its advanced firmware permits dynamic frequency scaling to adapt performance to power stability, and its robust industrial-grade construction and compact, user-friendly form factor make it suited to continuous 24/7 operation in diverse mining installations. Four high-speed fans and a refined air-cooling architecture keep operating temperatures in check and sustain consistent output, while a noise footprint around 75 decibels is to be expected from equipment of this capacity; the miner’s reliability and component quality support professional-scale deployments, and integration is eased by straightforward setup and management features. For operators seeking to project returns, a crypto-miner profit calculator can estimate potential earnings and electricity costs on daily, monthly, and yearly horizons based on chosen electricity rates and operational scenarios, helping to plan capacity, assess efficiency and weigh runtime trade-offs; in the quiet of a server room the S21+ hums like an apparatus engaged in an intellectual converse with an indifferent void, each hash a terse phrase in a dialogue between relentless computation and the yawning, pragmatic silence of power and profit.

Discover Which Coins This Miner Can Mine

Explore the cryptocurrencies that can be mined using Bitmain Antminer S21+ (235TH/s), including detailed profitability.

Currency Converter

Calculate the mineable coins to any currency.

Rate is for reference only. Updated just now.
Coin Income/Day Profit/Day
$9.92 $
0.00009769 Bitcoin Logo
$2.48 $
0.00002444 Bitcoin Logo
$9.87 $
0.00009749 Bitcoin Logo
$2.43 $
0.00002400 Bitcoin Logo
$9.68 $
0.01921438 Bitcoin Cash Logo
$2.24 $
0.00444939 Bitcoin Cash Logo
$10.62 $
26.47 Fractal Bitcoin Logo
$3.18 $
7.92 Fractal Bitcoin Logo

Historical Mining Performance

View the performance trends of Bitmain Antminer S21+ (235TH/s) over weekly, monthly, and yearly timeframes.

Historical Profitability

View the historical income and profit trends for this miner.

SHA-256 Miner Generations

Evolution of cryptocurrency mining hardware throughout the years, with the current generation highlighted for reference.

More Information about the

Learn more about the Bitmain Antminer S21+ (235TH/s)

The Antminer S21+ (235Th) arrives not as a toy but as a surgical instrument for SHA-256 mining, precise and unforgiving. It delivers 235 terahashes per second while drawing roughly 3,877 watts, yielding about 16.5 joules per terahash. At its core sits a 5 nm ASIC with proprietary chip optimizations that push hashing efficiency and cut waste heat. Firmware adds dynamic frequency scaling, which dials performance to match power stability or temperature limits. The chassis supports immersion cooling to dramatically lower junction temperatures and prolong component life in dense deployments. When air cooling is used, a refined architecture with four high-speed fans maintains steady thermal conditions. Industrial-grade components and a compact rack-friendly footprint make true 24/7 operation feasible. Expect a noise level near 75 dB, so plan acoustic isolation if humans work nearby. Remote management hooks into an AI-driven monitoring platform that provides real-time diagnostics, automated tuning, and fleet scheduling. Operators must design robust power distribution and targeted airflow because sustained hashing concentrates electrical and thermal stress. Regular firmware updates and preventive maintenance are non-negotiable to preserve efficiency and avoid abrupt failures. In short, the S21+ rewards those who treat deployment like clinical care: balance power, cooling, and service rhythm, and the machine will deliver steady throughput; neglect any of those, and the margins-and the hardware-suffer.

Where to Buy?

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Technical Specifications

Detailed hardware specifications and mining capabilities for Bitmain Antminer S21+ (235Th)

Basic Information

Brand
Bitmain
Model
Antminer S21+
Release Date
January 2025
Algorithm
SHA-256

Performance

Hashrate
235 TH/s
Power Consumption
3875.5W
Noise Level
75dbdB
Voltage
100-240VV

Physical Dimensions

Size
400 * 195 * 290mm
Weight
15100gkg
Interface
Ethernet
Humidity
5 - 90 %%
Cooling
Air

Mineable Cryptocurrencies

Bitcoin
BTC
Bitcoin
Bitcoin Cash
BCH
Bitcoin Cash
Fractal Bitcoin
FB
Fractal Bitcoin

Algorithm Information: SHA-256

Learn more about the SHA-256 algorithm and how it works.

SHA-256 is a cryptographic hash function that serves as the backbone of Fractal Bitcoin proof-of-work consensus mechanism. This algorithm processes input data of any length and produces a fixed hash value, ensuring security and integrity in the mining process.

Crypto Mining Pools

Connect to the most reliable mining pools and maximize your crypto mining efficiency with optimized uptime and profitability.

Pool Fee & Payment Connect
NiceHash pool logo
Reseller
F2Pool pool logo
4% FPPS 2% PPLNS
ViaBTC pool logo
4% PPS+ 2% PPLNS
AntPool pool logo
4% FPPS 2% PPLNS
EMCD pool logo
1.5% FPPS
Kryptex pool logo
3% PPS+
BinancePool pool logo
2.5%

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Frequently Asked Questions

Everything you need to know about the Bitmain Antminer S21+ (235Th)

How efficient is the Bitmain Antminer S21+ 235TH/s?

The efficiency of the Bitmain Antminer S21+ 235TH/s is 16.49 J/TH with a hashrate of 235TH/s and power consumption of 3875.5W.

What are the electricity costs for the Bitmain Antminer S21+ 235TH/s (USD)?

The Bitmain Antminer S21+ 235TH/s consumes $7.44 daily, $223.23 monthly, and $2,715.95 yearly in electricity costs.

How much power does the Bitmain Antminer S21+ 235TH/s use?

The Bitmain Antminer S21+ 235TH/s uses 3875.5W of electricity.

Who manufactures the Antminer S21+?

The Antminer S21+ is manufactured by Bitmain.

What is the hashrate of the Bitmain Antminer S21+?

The Bitmain Antminer S21+ has a hashrate of 235TH/s using the SHA-256 algorithm.

Which cryptocurrencies can be mined with the Bitmain Antminer S21+ 235TH/s?

The Bitmain Antminer S21+ 235TH/s can mine the following cryptocurrencies:

NiceHash NiceHash (BTC) Bitcoin Bitcoin (BTC) Bitcoin Cash Bitcoin Cash (BCH) Fractal Bitcoin Fractal Bitcoin (FB)

Is the Bitmain Antminer S21+ 235TH/s a profitable miner?

As of November 12, 2025 with an electricity cost of $0.08 the Bitmain Antminer S21+ 235TH/s generates $3.18 daily, $95.40 monthly, and $1,160.70 yearly.

This makes the Bitmain Antminer S21+ 235TH/s a profitable choice for mining.
BTC $101,250.00 ↘1.95%
ALPH $0.138700 ↗6.22%
KAS $0.048320 ↗0.07%
ETC $15.22 ↘1.19%
LTC $97.85 ↘0.57%
DOGE $0.169100 ↘0.4%
RXD $0.000171 ↗0.76%
BCH $503.96 ↗0.33%
CKB $0.003153 ↘1.32%
HNS $0.003381 ↘0.67%
KDA $0.040390 ↗22.35%
SC $0.001940 ↘1.01%
ALEO $0.223500 ↘2.22%
FB $0.401100 ↗0.93%
XMR $384.76 ↗3.49%
SCP $0.028080 ↘4.96%
BELLS $0.179100 ↘1.94%
XTM $0.003997 ↗3.59%
ZEC $491.36 ↗6.82%
BTC $101,250.00 ↘1.95%
ALPH $0.138700 ↗6.22%
KAS $0.048320 ↗0.07%
ETC $15.22 ↘1.19%
LTC $97.85 ↘0.57%
DOGE $0.169100 ↘0.4%
RXD $0.000171 ↗0.76%
BCH $503.96 ↗0.33%
CKB $0.003153 ↘1.32%
HNS $0.003381 ↘0.67%
KDA $0.040390 ↗22.35%
SC $0.001940 ↘1.01%
ALEO $0.223500 ↘2.22%
FB $0.401100 ↗0.93%
XMR $384.76 ↗3.49%
SCP $0.028080 ↘4.96%
BELLS $0.179100 ↘1.94%
XTM $0.003997 ↗3.59%
ZEC $491.36 ↗6.82%
BTC $101,250.00 ↘1.95%
ALPH $0.138700 ↗6.22%
KAS $0.048320 ↗0.07%
ETC $15.22 ↘1.19%
LTC $97.85 ↘0.57%
DOGE $0.169100 ↘0.4%
RXD $0.000171 ↗0.76%
BCH $503.96 ↗0.33%
CKB $0.003153 ↘1.32%
HNS $0.003381 ↘0.67%
KDA $0.040390 ↗22.35%
SC $0.001940 ↘1.01%
ALEO $0.223500 ↘2.22%
FB $0.401100 ↗0.93%
XMR $384.76 ↗3.49%
SCP $0.028080 ↘4.96%
BELLS $0.179100 ↘1.94%
XTM $0.003997 ↗3.59%
ZEC $491.36 ↗6.82%