Bitmain Antminer S19, S19 Pro

 

ASIC Model series:	ASIC Release:	Hashrate:	ASIC Power:		ASIC Algo:
Bitmain Antminer S19	May 2020	95Th/s	3250W		SHA-256
Bitmain Antminer S19j	Jun 2021	90Th/s	3250W		SHA-256
Bitmain Antminer S19j Pro	Jul 2021	104Th/s	3068W		SHA-256
Bitmain Antminer S19 Pro++	Sep 2024	125Th/s	3250W		SHA-256
Bitmain Antminer S19 Pro+ Hyd	May 2022	198Th/s	5445W		SHA-256
Bitmain Antminer S19 Pro Hyd	Jan 2023	177Th/s	5221W		SHA-256
Bitmain Antminer S19 Hyd	Oct 2022	158Th/s	5451W		SHA-256
Bitmain Antminer S19j Pro+	Dec 2022	122Th/s	3355W		SHA-256
Bitmain Antminer S19k Pro	Apr 2023	120Th/s	2760W		SHA-256

Modified ASIC Firmware for Antminer S19 series
(20-25% improvement) download here

 

BTC Bitmain ASIC Antminer S19 & S19 Pro Series

The Bitmain ASIC Antminer S19 and S19 Pro series represents one of the most widely deployed and long-lasting generations of SHA-256 ASIC miners in Bitcoin mining history. Introduced between 2020 and 2022, this generation laid the foundation for modern industrial mining and is still actively used in 2025–2026, especially in regions with low electricity costs or advanced cooling solutions.

Unlike later generations that focused almost exclusively on efficiency, the S19 series emphasized scalability, reliability, and mass deployment. Over time, Bitmain released numerous sub-models with different hashrates, efficiencies, and cooling methods, allowing operators to adapt to changing market conditions and network difficulty.

The S19 family includes both air-cooled and hydro-cooled variants, as well as refreshed versions with improved chip binning and power optimization.

The most important models in this generation include:

• S19

• S19j

• S19 Pro

• S19j Pro

• S19 Pro++

• S19 Pro+ Hyd

• S19 Pro Hyd

• S19 Hydro

• S19j Pro+

• S19k Pro

BTC SHA-256 Algorithm and Bitcoin Mining

All miners in the Antminer S19 and S19 Pro series operate exclusively on the SHA-256 algorithm, which secures the Bitcoin network through Proof-of-Work. These machines are purpose-built ASICs and cannot be repurposed for other algorithms or GPU-style workloads.

In real-world operation, these miners are primarily used for Bitcoin mining due to its dominant hashrate, liquidity, and economic incentives. While other SHA-256 coins exist, they rarely offer better long-term profitability.

The main cryptocurrencies supported by the S19 series are:

• Bitcoin (BTC) – the primary and most profitable target

• Bitcoin Cash (BCH) – occasionally mined depending on conditions

• Bitcoin SV (BSV) – technically supported but rarely preferred

BTC Mining Difficulty

Bitcoin mining difficulty adjusts automatically to ensure a stable block time of approximately 10 minutes. As more efficient hardware enters the network, older models gradually lose competitiveness.

The S19 generation was designed to operate efficiently under rapidly increasing difficulty, replacing older S9 and S17 models at scale. While it is less efficient than newer S21 or S23 miners, it remains viable where electricity costs are low, hardware is depreciated, or immersion/hydro cooling is used.

BTC Bitmain ASIC Antminer S19 & S19 Pro models

ASIC Bitmain Antminer S19

ASIC Bitmain Antminer S19

The Antminer S19 is the base model of the generation and was designed for large-scale deployment rather than peak efficiency. It was produced in multiple batches with slightly different performance characteristics.

Typical configurations include:

• Algorithm: SHA-256

• Hashrate: 82–95 TH/s (depending on batch)

• Power Consumption: ~3,250 W

• Energy Efficiency: 34–39 J/TH

• Cooling: Air-cooled

• Release period: 2020

This model is now mostly used in locations with very cheap power or as a candidate for immersion retrofits.

ASIC Bitmain Antminer S19j

The S19j improved upon the original S19 by offering better chip yields and more consistent efficiency across production batches.

Its typical technical profile includes:

• Algorithm: SHA-256

• Hashrate: 90–100 TH/s

• Power Consumption: ~3,100 W

• Energy Efficiency: ~30–34 J/TH

• Cooling: Air-cooled

• Release period: 2021

The S19j became one of the most common miners in industrial farms due to its balance of cost and performance.

ASIC Bitmain Antminer S19 Pro

The S19 Pro was the flagship air-cooled model at launch and marked a major efficiency leap over previous generations.

It was produced in multiple versions with different hashrates:

• Algorithm: SHA-256

• Hashrate: 100–110 TH/s

• Power Consumption: ~3,250 W

• Energy Efficiency: ~29–32 J/TH

• Cooling: Air-cooled

• Release period: 2020–2021

This model became the industry standard for professional mining until the arrival of S19 XP.

ASIC Bitmain Antminer S19j Pro

The S19j Pro refined the Pro design and introduced improved efficiency and production consistency.

Its common specifications include:

• Algorithm: SHA-256

• Hashrate: 96–104 TH/s

• Power Consumption: ~3,050 W

• Energy Efficiency: ~29–31 J/TH

• Cooling: Air-cooled

• Release period: 2021

This model is still widely used due to its reliability and strong aftermarket support.

ASIC Bitmain Antminer S19 Pro++

The S19 Pro++ is an optimized refresh focused on higher hashrate with similar power draw.

Typical performance characteristics:

• Algorithm: SHA-256

• Hashrate: 110–112 TH/s

• Power Consumption: ~3,300 W

• Energy Efficiency: ~29 J/TH

• Cooling: Air-cooled

• Release period: 2022

It represents the peak of air-cooled S19 performance.

ASIC Bitmain Antminer S19k Pro

The S19k Pro is one of the latest air-cooled refreshes of the S19 generation, designed to remain competitive under higher difficulty.

Its specifications typically include:

• Algorithm: SHA-256

• Hashrate: 115–120 TH/s

• Power Consumption: ~2,760–3,000 W

• Energy Efficiency: ~23–26 J/TH

• Cooling: Air-cooled

• Release period: 2023

This model is considered one of the most efficient air-cooled S19 variants.

Hydro-Cooled ASIC BTC S19 Models

As mining scaled up, Bitmain introduced hydro-cooled versions of the S19 to improve thermal stability and efficiency.

Hydro-Cooled S19 Models

BTC ASIC Bitmain Antminer S19 Hydro

• Hashrate: ~158 TH/s

• Power Consumption: ~5,450 W

• Efficiency: ~34 J/TH

• Cooling: Hydro

• Release period: 2022

BTC ASIC Bitmain Antminer S19 Pro Hyd

• Hashrate: ~177 TH/s

• Power Consumption: ~5,220 W

• Efficiency: ~29.5 J/TH

• Cooling: Hydro

• Release period: 2022

BTC ASIC Bitmain Antminer S19 Pro+ Hyd

• Hashrate: ~191 TH/s

• Power Consumption: ~5,250 W

• Efficiency: ~27.5 J/TH

• Cooling: Hydro

• Release period: 2022–2023

Hydro models are primarily used in large professional farms with centralized cooling systems.

BTC Mining Pools for the ASIC S19 Series

Due to the extremely high Bitcoin network difficulty, S19 miners are almost always operated in mining pools. Pool mining provides stable payouts and predictable revenue.

The most commonly used pools include:

• AntPool

• F2Pool

• ViaBTC

• BTC.com

• Slush Pool

Current Market Status for BTC ASIC Antminer S19

The S19 and S19 Pro series is now considered fully mature hardware. Most units are depreciated and widely available on the secondary market.

Air-cooled models dominate regions with cheap electricity, while hydro models continue to operate efficiently in industrial facilities.

BTC Profitability and ROI ASIC Antminer S19

Profitability for the S19 generation depends heavily on electricity price and cooling method.

General trends include:

• Air-cooled models require very low power costs

• Hydro models remain profitable in optimized facilities

• Immersion retrofits extend lifespan and efficiency

ROI is typically slower than newer generations but remains viable in the right conditions.

User Experience and Reliability S19 ASIC

The S19 generation is widely regarded as one of the most reliable ASIC families ever produced by Bitmain.

Common user feedback highlights:

• Long operational lifespan (3–5+ years)

• Stable firmware and predictable behavior

• High noise levels on air-cooled units

• Excellent spare-part availability

Common Failures and Repairability BTC Antminer ASIC

Over time, typical failure points have become well documented.

Most common issues include:

• Fan failures

• Hashboard degradation due to heat

• PSU aging

• Connector corrosion in humid environments

A major advantage of the S19 series is excellent repairability, with global availability of parts and repair services.

Is the BTC Antminer S19 Series Still Worth It?

The Bitmain Antminer S19 and S19 Pro series remains a workhorse of SHA-256 mining. While no longer cutting-edge, it offers unmatched maturity, repairability, and availability.

For miners with cheap electricity, immersion or hydro cooling, and long-term operational planning, the S19 generation continues to deliver reliable Bitcoin mining performance in 2026.