* Mining profitability *

Bitmain Antminer S21 Hyd (335Th) Antminer S21 Hydro 335T

Antminer S21 Hyd Profit Calculator delivers accurate real-time prof

Read more
Manufacturer
Bitmain
Bitmain Antminer S21 Hyd (335Th) Antminer S21 Hydro 335T
Realtime Mining Profit
$0.42/day
335TH/s
Hashrate
5360W
Power

Profitability Analysis

Live Data

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

Current BTC Price $64,239.00
Period Income Expense Profit
Daily
$10.71 $10.29
$0.42
Monthly
$321.26 $308.74
$12.52
Yearly
$3,908.67 $3,756.29
$152.38
No Offer available
* Overview

Bitmain Antminer S21 Hyd (335TH/s) Hardware Overview

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

The Bitmain Antminer S21 Hyd (335Th) is a purpose-built SHA-256 workhorse that pushes 335 TH/s while drawing 5,360 watts, yielding roughly 16 J/TH and throwing off essentially the same amount of heat as its power draw, so plan to shed about 5.3 kilowatts of thermal energy per unit into your cooling loop or room air; its defining trait is a sealed hydro-cooling circuit using deionized or otherwise ultra-pure water to carry heat away more evenly than air, which lowers chip temperatures, reduces thermal cycling and stress, and lengthens component life while keeping acoustic output down to about 50 dB so rows of machines need not sound like a factory floor. Compact at 339 x 163 x 207 mm, it fits densely into industrial racks and can be deployed where floor space is at a premium, but installation demands attention: robust electrical distribution, redundant power supplies or breakers, properly sized pumps and heat exchangers or chillers for the water loop, leak detection and quick-disconnect plumbing, and routine water chemistry maintenance to prevent corrosion or biological growth. Rated to operate between roughly 5 and 45 °C and across wide humidity ranges, the S21 Hyd sustains consistent hashrate under continuous load and benefits operations that prioritize steady uptime and lower fan wear; because hydro units concentrate heat into a liquid stream, facility HVAC design can be simplified or centralized but must handle the concentrated thermal load safely. For Bitcoin and other SHA-256 coins it delivers competitive throughput with fewer noisy fans to manage, and its engineering emphasis on stable temperatures, compact footprint, and robust cooling components makes it well suited to large-scale farms that can invest in centralized chillers and water-management infrastructure-practicalities include planning for power-factor and breaker sizing, accessible network ports for monitoring and firmware updates, and serviceable mounting that lets technicians swap units without draining an entire rack; in short, the S21 Hyd trades the simplicity of air-cooled boxes for higher density, quieter operation, and longer-lived hardware when paired with the correct facility support, a little like a stubborn old tractor that only asks for clean water and a steady hand to keep on working.

Discover Which Coins This Miner Can Mine

Explore the cryptocurrencies that can be mined using Bitmain Antminer S21 Hyd (335TH/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
$10.69 $
0.00016633 Bitcoin Logo
$0.39 $
0.00000613 Bitcoin Logo
$10.66 $
0.00016581 Bitcoin Logo
$0.37 $
0.00000577 Bitcoin Logo
$9.56 $
0.04688385 Bitcoin Cash Logo
$-0.73 $
-0.00358300 Bitcoin Cash Logo
$10.79 $
31.26 Fractal Bitcoin Logo
$0.50 $
1.44 Fractal Bitcoin Logo

Historical Mining Performance

Bitmain Antminer S21 Hyd (335TH/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 Hyd In Detail

Bitmain Antminer S21 Hyd (335TH/s) — a closer look at the hardware and how it performs.

Under a clinical neon glaze the Bitmain Antminer S21 Hyd 335Th presents itself as a purpose-built SHA-256 engine-rated at 335 TH/s with a draw of 5,360 watts and an efficiency hovering around 16 J/TH-its character defined by a sealed hydro loop that channels deionized or ultra-pure water to strip heat directly from cold plates and hashboards, cutting thermal cycling, lowering junction temperatures and materially extending component life compared with air-cooled boxes; the closed-loop circuit uses industrial-grade, leak-resistant hydraulic connectors and quick-disconnect plumbing, and the unit’s integrated hashboard monitoring and custom firmware support let operators tune hashrate stability, monitor anomalies in real time and push firmware updates over accessible network ports without ripping racks apart. Compact at 339 x 163 x 207 mm and whispering about 50 dB, the S21 Hyd is built for dense racks where acoustic footprint and fan wear matter, and it tolerates a broad environmental envelope (roughly 5–45 °C and 5–95% relative humidity), but it trades the plug-and-play simplicity of air-cooled boxes for a set of infrastructure requirements: properly sized pumps and heat exchangers or a centralized chiller to absorb the roughly 5.36 kW of heat per unit, robust electrical distribution with attention to breaker sizing and power factor correction, leak detection and water-chemistry maintenance to prevent corrosion or biological growth, and serviceable mounting so technicians can swap units without draining an entire loop. For planning purposes, the thermal load can be translated into hydraulic terms-assuming a 5 °C temperature rise across the heat exchanger, a single S21 Hyd needs on the order of 0.256 liters per second (≈15 liters per minute) of coolant flow; allowing a 10 °C delta roughly halves that demand-so pump sizing, plumbing diameter and chiller capacity should be calculated from expected rack counts, not individual units. Operational features like low-voltage operation and enhanced thermal-throttling algorithms reduce heat loss and prevent runaway temperatures during sustained loads, while cold-plate technology maximizes direct heat transfer; in practice these design choices let facility HVAC be simplified or centralized, but only if the water-management architecture-pumps, filters, reservoirs, heat exchangers and redundancy-can safely handle the concentrated thermal stream and maintenance routines are in place to keep the loop clean and conductive.

* Full spec sheet

Technical Specifications

Bitmain Antminer S21 Hyd (335Th) Antminer S21 Hydro 335T — full hardware specifications and mining capabilities.

Tap any value to copy it

Basic Information

Brand
Bitmain
Model
Antminer S21 Hyd
Release Date
February 2024
Algorithm
SHA-256

Performance

Hashrate
335 TH/s
Power Consumption
5360W
Noise Level
50db
Voltage
100-240V

Physical Dimensions

Size
410 x 170 x 209mm
Weight
14500gkg
Interface
Ethernet
Humidity
5 - 95 %
Temperature
5 - 45 °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. Fractal Bitcoin 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 Hyd (335Th) Antminer S21 Hydro 335T

The efficiency of the Bitmain Antminer S21 Hyd 335TH/s is 16.00 J/TH with a hashrate of 335TH/s and power consumption of 5360W.

The Bitmain Antminer S21 Hyd 335TH/s consumes $10.29 daily, $308.74 monthly, and $3,756.29 yearly in electricity costs.

The Bitmain Antminer S21 Hyd 335TH/s uses 5360W of electricity.

The Antminer S21 Hyd is manufactured by Bitmain.

The Bitmain Antminer S21 Hyd has a hashrate of 335TH/s using the SHA-256 algorithm.

The Bitmain Antminer S21 Hyd 335TH/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 Hyd 335TH/s generates $0.42 daily, $12.52 monthly, and $152.38 yearly.

This makes the Bitmain Antminer S21 Hyd 335TH/s a profitable choice for mining.

Based on our real-time ASIC mining profit calculation, the Bitmain Antminer S21 Hyd is currently most profitable mining Fractal Bitcoin 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 Hyd 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 Hyd 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 $64,305.11 ↗1.22%
ALPH $0.026610 ↘2.95%
KAS $0.025520 ↘1.79%
ETC $6.18 ↘1.13%
LTC $44.45 ↘0.79%
DOGE $0.070270 ↘0.99%
RXD $0.000024 ↘2.54%
BCH $203.92 ↘1.38%
CKB $0.000820 ↘1.5%
HNS $0.001966 ↗1.08%
KDA $0.004710 ↘1.28%
SC $0.000461 ↘2.01%
ALEO $0.038140 ↗1.02%
FB $0.345100 ↘1.37%
XMR $409.37 ↘2.21%
SCP $0.020580 ↘6.17%
BELLS $0.109000 ↘1.56%
XTM $0.000306 ↘2.17%
ZEC $514.49 ↗1.21%
BTC $64,305.11 ↗1.22%
ALPH $0.026610 ↘2.95%
KAS $0.025520 ↘1.79%
ETC $6.18 ↘1.13%
LTC $44.45 ↘0.79%
DOGE $0.070270 ↘0.99%
RXD $0.000024 ↘2.54%
BCH $203.92 ↘1.38%
CKB $0.000820 ↘1.5%
HNS $0.001966 ↗1.08%
KDA $0.004710 ↘1.28%
SC $0.000461 ↘2.01%
ALEO $0.038140 ↗1.02%
FB $0.345100 ↘1.37%
XMR $409.37 ↘2.21%
SCP $0.020580 ↘6.17%
BELLS $0.109000 ↘1.56%
XTM $0.000306 ↘2.17%
ZEC $514.49 ↗1.21%
BTC $64,305.11 ↗1.22%
ALPH $0.026610 ↘2.95%
KAS $0.025520 ↘1.79%
ETC $6.18 ↘1.13%
LTC $44.45 ↘0.79%
DOGE $0.070270 ↘0.99%
RXD $0.000024 ↘2.54%
BCH $203.92 ↘1.38%
CKB $0.000820 ↘1.5%
HNS $0.001966 ↗1.08%
KDA $0.004710 ↘1.28%
SC $0.000461 ↘2.01%
ALEO $0.038140 ↗1.02%
FB $0.345100 ↘1.37%
XMR $409.37 ↘2.21%
SCP $0.020580 ↘6.17%
BELLS $0.109000 ↘1.56%
XTM $0.000306 ↘2.17%
ZEC $514.49 ↗1.21%