* Mining profitability *

Bitmain Antminer S21 XP+ Hydro (395TH)

Antminer S21+ Hydro Profit Calculator delivers accurate real-time p

Read more
Manufacturer
Bitmain
Bitmain Antminer S21 XP+ Hydro (395TH)
Realtime Mining Profit
$1.25/day
395TH/s
Hashrate
5925W
Power

Profitability Analysis

Live Data

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

Current BTC Price $64,365.00
Period Income Expense Profit
Daily
$12.62 $11.38
$1.25
Monthly
$378.75 $341.28
$37.47
Yearly
$4,608.10 $4,152.24
$455.86
No Offer available
* Overview

Bitmain Antminer S21+ Hydro (395TH/s) Hardware Overview

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

The Bitmain Antminer S21 XP+ Hyd (395Th) moves through a server room like a lithe predator-clinical, relentless, and tuned to the hunt for Bitcoin-delivering a crushing 395 TH/s on the SHA‑256 algorithm while drawing about 5,925 watts for an energy profile near 15 J/TH; its OD10 hydro‑cooling circulation reins in heat with surgical efficiency so chips run cooler and longer, and the quieter 50 dB signature makes it far less obtrusive in large installations than air‑cooled beasts, while standard Ethernet connectivity and compact dimensions (410 × 170 × 209 mm) and its 12.85 kg mass simplify rack integration and deployment at scale. Engineered for longevity, the unit thrives across a broad environmental envelope-rated to operate around 5–45°C with humidity tolerance down to 5% and up to 95% (many operators keep it within 20–50°C and 10–90% for sustained peak stability)-but to unlock that steady hunger it demands proper site prep: robust three‑phase power distribution, a dedicated water loop with filtration and heat exchanger, leak‑proof fittings, pump redundancy, and active monitoring of hash rate, coolant flow and inlet/outlet temperatures to prevent throttling and extend service life. For industrial miners orienting around energy efficiency, predictable thermal management and quieter floorspace, the S21 XP+ Hyd is a specialist instrument-its hydro system reduces fan loads and ambient heat, its efficiency tightens energy per terahash metrics and operational economics, and routine maintenance (coolant quality checks, seals, firmware updates and steady electrical provisioning) will keep this machine hunting block rewards with the ruthless persistence of a creature that never sleeps.

Discover Which Coins This Miner Can Mine

Explore the cryptocurrencies that can be mined using Bitmain Antminer S21+ Hydro (395TH/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
$12.62 $
0.00019615 Bitcoin Logo
$1.25 $
0.00001940 Bitcoin Logo
$12.62 $
0.00019624 Bitcoin Logo
$1.25 $
0.00001939 Bitcoin Logo
$11.41 $
0.05572275 Bitcoin Cash Logo
$0.04 $
0.00018943 Bitcoin Cash Logo
$12.17 $
35.23 Fractal Bitcoin Logo
$0.79 $
2.30 Fractal Bitcoin Logo

Historical Mining Performance

Bitmain Antminer S21+ Hydro (395TH/s) performance trends over weekly, monthly, and yearly timeframes.

Historical Profitability

View the historical income and profit trends for this miner.

Where to Buy?

Trusted vendors and current market availability, showcasing verified suppliers offering this ASIC miner along with their latest pricing and stock information.

No Offers Available

There are currently no offers for this miner. Please check back later.

SHA-256 Miner Generations

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

Generation 1

31 miners

Generation 2

31 miners

Generation 3

31 miners

Generation 4

31 miners

Generation 5

31 miners

Generation 6

31 miners

Generation 7

32 miners

Generation 8

32 miners
* Deep dive

Bitmain Antminer S21+ Hydro In Detail

Bitmain Antminer S21+ Hydro (395TH/s) — a closer look at the hardware and how it performs.

When datacenter stakes are measured in megawatts and milliseconds, the Bitmain Antminer S21 XP+ Hydro steps into the room like a silent executive armed with raw throughput. It delivers 395 terahashes per second on SHA‑256. It draws approximately 5,925 watts, giving an energy efficiency near 15 joules per terahash. Hydro cooling is the core design choice. A closed water loop tames heat and cuts fan loads. Chips run cooler and last longer. Noise lands at about 50 decibels, keeping plant floors quieter and easing operations. Compact dimensions of 410 × 170 × 209 millimeters and a weight of 12.85 kilograms simplify rack integration and logistics. The unit tolerates wide environmental conditions, operating from 5 to 45 degrees Celsius and surviving 5 to 95 percent relative humidity. Time in the room fractures into cycles of hash and coolant, and performance becomes the only clock. Site readiness requires robust three‑phase power, a dedicated water loop with filtration and heat exchange, leak‑proof fittings, pump redundancy and rigorous monitoring. Active observation of hash rate, coolant flow and inlet/outlet temperatures prevents throttling and extends service life. Routine tasks include coolant quality checks, seal inspections and timely firmware updates. For institutional miners seeking predictable margins, tighter energy per terahash math and reduced ambient thermal load, the S21 XP+ Hydro is a specialist instrument that rewards disciplined infrastructure and maintenance with sustained uptime and clearer operational economics.

* Full spec sheet

Technical Specifications

Bitmain Antminer S21 XP+ Hydro (395TH) — full hardware specifications and mining capabilities.

Tap any value to copy it

Basic Information

Brand
Bitmain
Model
Antminer S21+ Hydro
Release Date
November 2024
Algorithm
SHA-256

Performance

Hashrate
395 TH/s
Power Consumption
5925W
Noise Level
50db
Voltage
100-240V

Physical Dimensions

Size
410 x 170 x 209
Weight
13800gkg
Interface
Ethernet
Humidity
5 - 90 %
Temperature
5 - 35 °C
Cooling
Hydro

Mineable Cryptocurrencies

Bitcoin
BTC
Bitcoin
Bitcoin Cash
BCH
Bitcoin Cash
Fractal Bitcoin
FB
Fractal Bitcoin
* The algorithm

Algorithm Information: SHA-256

SHA-256 — what this algorithm is and how it works.

SHA-256 is a cryptographic hash function. NiceHash relies on it for proof-of-work consensus. 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%

User Reviews

See what users are saying about this miner.

No Reviews Yet

Be the first to review this miner!

* Answers Bitmain

Frequently Asked Questions

Everything you need to know about the Bitmain Antminer S21 XP+ Hydro (395TH)

The efficiency of the Bitmain Antminer S21+ Hydro 395TH/s is 15.00 J/TH with a hashrate of 395TH/s and power consumption of 5925W.

The Bitmain Antminer S21+ Hydro 395TH/s consumes $11.38 daily, $341.28 monthly, and $4,152.24 yearly in electricity costs.

The Bitmain Antminer S21+ Hydro 395TH/s uses 5925W of electricity.

The Antminer S21+ Hydro is manufactured by Bitmain.

The Bitmain Antminer S21+ Hydro has a hashrate of 395TH/s using the SHA-256 algorithm.

The Bitmain Antminer S21+ Hydro 395TH/s can mine the following cryptocurrencies:

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

As of August 17, 2026 with an electricity cost of $0.08 the Bitmain Antminer S21+ Hydro 395TH/s generates $1.25 daily, $37.47 monthly, and $455.86 yearly.

This makes the Bitmain Antminer S21+ Hydro 395TH/s a profitable choice for mining.

Based on our real-time ASIC mining profit calculation, the Bitmain Antminer S21+ Hydro is currently most profitable mining NiceHash at your electricity rate of $0.080/kWh. This can change as coin prices and network difficulty shift, so check the Mineable Coins table above for the latest ranking.

This ASIC mining profit calculation for the Bitmain Antminer S21+ Hydro uses live cryptocurrency prices, current network difficulty, and block rewards for every supported coin, combined with your custom electricity rate. Figures update automatically as network conditions change, so the profitability shown reflects current conditions rather than a static estimate.

NiceHash is a hashpower marketplace, not a traditional mining pool — instead of mining a coin directly, you sell your Bitmain Antminer S21+ Hydro hashrate to buyers and get paid in Bitcoin. Compare the NiceHash row against direct-mining rows in the Mineable Coins table above: whichever shows the higher Profit/Day at your electricity rate is currently the better option for this specific miner.

This miner is not currently listed by any of our verified vendors. You can still use the profitability figures on this page to plan ahead for when new listings appear.
BTC $64,326.44 ↗1.44%
ALPH $0.026890 ↘2.08%
KAS $0.025470 ↘2.48%
ETC $6.18 ↘1.33%
LTC $44.51 ↘0.79%
DOGE $0.070350 ↘1.04%
RXD $0.000025 ↘1.1%
BCH $204.85 ↘1.17%
CKB $0.000821 ↘1.54%
HNS $0.002009 ↗3.52%
KDA $0.004690 ↘2.07%
SC $0.000461 ↘2.42%
ALEO $0.038140 ↗1.02%
FB $0.345500 ↘1.51%
XMR $413.18 ↘1.26%
SCP $0.020590 ↘7.19%
BELLS $0.108200 ↘2.99%
XTM $0.000304 ↘3.17%
ZEC $510.49 ↗0.7%
BTC $64,326.44 ↗1.44%
ALPH $0.026890 ↘2.08%
KAS $0.025470 ↘2.48%
ETC $6.18 ↘1.33%
LTC $44.51 ↘0.79%
DOGE $0.070350 ↘1.04%
RXD $0.000025 ↘1.1%
BCH $204.85 ↘1.17%
CKB $0.000821 ↘1.54%
HNS $0.002009 ↗3.52%
KDA $0.004690 ↘2.07%
SC $0.000461 ↘2.42%
ALEO $0.038140 ↗1.02%
FB $0.345500 ↘1.51%
XMR $413.18 ↘1.26%
SCP $0.020590 ↘7.19%
BELLS $0.108200 ↘2.99%
XTM $0.000304 ↘3.17%
ZEC $510.49 ↗0.7%
BTC $64,326.44 ↗1.44%
ALPH $0.026890 ↘2.08%
KAS $0.025470 ↘2.48%
ETC $6.18 ↘1.33%
LTC $44.51 ↘0.79%
DOGE $0.070350 ↘1.04%
RXD $0.000025 ↘1.1%
BCH $204.85 ↘1.17%
CKB $0.000821 ↘1.54%
HNS $0.002009 ↗3.52%
KDA $0.004690 ↘2.07%
SC $0.000461 ↘2.42%
ALEO $0.038140 ↗1.02%
FB $0.345500 ↘1.51%
XMR $413.18 ↘1.26%
SCP $0.020590 ↘7.19%
BELLS $0.108200 ↘2.99%
XTM $0.000304 ↘3.17%
ZEC $510.49 ↗0.7%