Million Miner Logo
$/kWh
In Stock

Bitdeer

Bitdeer SealMiner A3 Pro Hydro (660TH)

Model: SealMiner A3 Pro Hydro

New

660 TH/s water-cooled SHA-256 Bitcoin miner from Bitdeer's SealMiner series. 12.5 J/TH efficiency at 8,250W. Bitdeer's most powerful miner for professional hydro farms. Warranty and free DDP shipping from MillionMiner.

660 TH/s 8250W SHA-256 12.5 J/TH

Select Availability

Quantity

Total Price

$10,449.00

Buying 10 or more? Get custom bulk pricing

Pay with: Bank Transfer | BTC | ETH | USDT

Genuine

Tested hardware

Worldwide

Global shipping

Support

Mining experts

Hashrate

660 TH/s

Power

8250 W

Efficiency

12.50 J/TH

Noise

50 dB

Estimated Mining Returns

Based on current BTC price & network difficulty. Indicative only.

Period Daily Weekly Monthly
Income
$28.47 $199.29 $854.10
Electricity
-$15.84 -$110.88 -$475.20
Profit
$12.63 $88.41 $378.90

Using 0.080 $/kWh · Network difficulty as of today. Estimates only.

Adjust rate in the bar above

Updated daily. Last refresh: Apr 21, 2026. Estimates at $0.08/kWh.

Full Specifications

Hashrate 660 TH/s
Power Consumption 8250 W
Efficiency 12.50 J/TH
Algorithm SHA-256
Model SealMiner A3 Pro Hydro
Release Year Oct 2025
Noise Level 50 dB
Dimensions 665 x 482 x 86mm
Weight 20 g
Voltage 380 - 480v
Interfaces Ethernet
Operating Temp 20-55°C
Humidity 10-90%
Cooling Type Hydro
Rack Format 2U

What's in the Box

SealMiner A3 Pro Hydro
Power supply unit (PSU)
Power cables
Quick start guide

Contents may vary by batch. Exact items listed in order confirmation.

Quick Setup

1

Connect PSU to miner and plug into the outlet

2

Connect ethernet cable to your router or switch

3

Find miner IP via router admin or IP scanner tool

4

Open web interface, enter pool URL and wallet — start mining

Hydro-cooled miners require 380-415V three-phase power and a hydro cooling loop. Standard household outlets are not compatible. Contact our team for hosting options or setup guidance.

Product Details

Bitdeer SealMiner A3 Pro Hydro 660 TH/s Water Cooled SHA 256 Bitcoin Miner

The Bitdeer SealMiner A3 Pro Hydro produces 660 TH/s at 8,250W in a 2U hydro cooled rack chassis on SEAL02 chip. 12.5 J/TH efficiency. Top bin in Bitdeer's hydro tier, producing over twice the hashrate of the A3 Pro Air (290 TH/s) in a rack mount water cooled format.

A 42U rack holds approximately 10 A3 Pro Hydro units (factoring in manifold and PDU space), producing 6.6 PH/s at 82.5 kW per rack. Water cooling drops noise to 50 dB, 25 dB below the 75 dB air cooled A3 models. This noise reduction matters in shared data center environments.

Bitdeer's hydro chassis uses sealed internal water channels in a standard 2U format. 19 inch rack compatible. Water or water glycol closed loop cooling. No dielectric fluid, no custom tanks. Standard racks, standard plumbing. For facilities already running water cooled compute hardware, the A3 Pro Hydro integrates without specialized infrastructure.

The A3 Hydro (500 TH/s at 6,750W, standard bin) uses the identical chassis. Both models are physically interchangeable in the same rack and cooling loop. Mix bins to balance fleet cost and efficiency.

665 x 482 x 86mm at 20.5 kg. 380 to 480V three phase. Ethernet. 20 to 55 degrees Celsius at 10 to 90 percent humidity. Bitcoin, Bitcoin Cash, and all SHA 256 coins. Bitdeer (NASDAQ: BTDR) chip and operations.

The A3 Pro Hydro matches the same 12.5 J/TH efficiency as the air cooled A3 Pro Air from the same SEAL02 chip platform. The hydro format consolidates more hashrate per unit (660 versus 290 TH/s) at the cost of requiring water cooling infrastructure and three phase power.

SealMiner A3 Pro Hydro 660 TH/s Hydro Bitcoin Miner at 12.5 J/TH

Top bin in Bitdeer's 2U hydro tier. 660 TH/s at 8,250W and 12.5 J/TH on SEAL02 chip. Over twice the hashrate of the air cooled A3 Pro Air in a standard server rack format with water cooling.

10 units per 42U rack at 6.6 PH/s and 82.5 kW. 50 dB water cooled. Standard 19 inch rack compatible. No immersion tanks or dielectric fluid needed. Just racks, water lines, pumps, and heat exchangers.

A3 Hydro (500 TH/s, standard bin) uses the same 2U chassis for mixed rack deployments. Bitdeer (NASDAQ: BTDR) proprietary SEAL02 chip with vertical integration from chip design through mining operations. 665 x 482 x 86mm at 20.5 kg. 380 to 480V three phase. Ethernet. 20 to 55 degrees Celsius. Bitcoin, Bitcoin Cash, all SHA 256.

665 x 482 x 86mm at 20.5 kg per unit. 20 to 55 degrees Celsius operating range. Bitdeer firmware and monitoring tools shared across all A3 SealMiner models.

Need Help Choosing?

Our mining specialists can help you find the perfect miner for your setup and budget.

All Products Contact Sales

SealMiner A3 Pro Hydro 660 TH/s SHA 256 Bitcoin Miner

Bitdeer SealMiner A3 Pro Hydro. 660 TH/s SHA 256 hydro cooled 2U at 12.5 J/TH on SEAL02 chip. Top bin in Bitdeer's hydro tier. 8,250W at 380 to 480V. 50 dB. 10 units per 42U rack at 6.6 PH/s. Standard 19 inch rack water cooling. No dielectric fluid. 20.5 kg at 665 x 482 x 86mm. Ethernet. Bitcoin, Bitcoin Cash, all SHA 256. Bitdeer firmware shared across all A3 models. 20 to 55 degrees Celsius at 10 to 90 percent humidity.

660TH Flagship SealMiner Output

Bitdeer's most powerful Bitcoin miner. 660 terahash of SHA-256 output for maximum hashrate density in hydro-cooled facilities.

12.5 J/TH Top-Tier Efficiency

Competing with the best from Bitmain and MicroBT. Engineered by a company that operates mining at industrial scale.

Worldwide DDP, Warranty Included

Ships brand new from MillionMiner. All customs clearance, duties, and import taxes covered at no extra cost.

Related Products

Antminer S21 XP (270Th)

Bitmain

Antminer S21 XP (270Th)

$4,051.00
Bitmain Antminer S21 PRO (234Th)

Bitmain

Bitmain Antminer S21 PRO (234Th)

$3,083.00
Antminer S21 XP HYDRO (473Th)

Bitmain

Antminer S21 XP HYDRO (473Th)

$6,899.00
Canaan Avalon Q 90TH/s Bitcoin Miner

Canaan

Canaan Avalon Q (90TH)

$2,300.00
FAQ

Frequently Asked Questions

The SealMiner A3 Pro Hydro produces 660 TH/s of SHA-256 hashrate, making it Bitdeer's most powerful Bitcoin miner.

It achieves 12.5 J/TH at 8,250W, competing with the best water-cooled miners from Bitmain and MicroBT.

A compatible water cooling loop with adequate radiator capacity. MillionMiner offers hydro accessories and hosting with liquid cooling infrastructure.

A publicly traded mining company (BTDR) that developed the SealMiner as its first proprietary ASIC based on years of operating mining at industrial scale.

Bitcoin (BTC), Bitcoin Cash (BCH), and all SHA-256 cryptocurrencies.

No. The A3 Pro Hydro is designed exclusively for professional data centers with hydro cooling infrastructure and industrial power.

The A3 Pro Hydro delivers over 2.5 times the hashrate at better efficiency (12.5 vs 14.0 J/TH), but requires water cooling infrastructure.

Yes. MillionMiner operates data centers with hydro infrastructure, dashboard access, and transparent monthly electricity billing.

Ships brand new with manufacturer warranty and free DDP delivery worldwide through MillionMiner.