SPOT Bitcoin Miner U3S21EXPH

Bitmain Antminer U3S21EXPH hydro-cooled high-density Bitcoin miner with 860 TH/s hash rate. Designed for maximum output in enterprise hydro mining environments.

Function
BTC/BCH/BSV SHA256 Hydro-cooling Miner
Specifications
860T 11180W 13J/T
Rating ★★★★☆ 4.4 5 reviews
Price
22 $/T
18,490 $/Unit
Shipping Date
SPOT Shipping from March 2026
Payment Method
BTC BCH BSV
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Performance Curves

1. Hashrate vs. Inlet Coolant Temperature

Bitcoin Miner U3s21exph - Image 1

2. Power Efficiency vs. Inlet Coolant Temperature

Bitcoin Miner U3s21exph - Image 3

(1-1) The hashrate value, and power efficiency on wall are all typical values. The actual hashrate value fluctuates by ±3%, and the actual power efficiency on wall fluctuate by ±5%.

Specifications

Product GlanceValue
ModelU3S21EXPH
Sub860T
Version10
Crypto algorithm/coinsSHA256|BTC/BCH/BSV
Typical hashrate, TH/s(1-1)860
Power on wall @35℃(1-2), Watt(1-1)11,180
Power efficiency on wall@35℃(1-2), J/T(1-1)13.0
Detailed CharacteristicsValue
Power Supply
Phase3
Input voltage, Volt(2-1)380~415
Input frequency range, Hz50~60
Input max current, Amp24
Power portLP34
Hardware Configuration
Networking connection modeRJ45 Ethernet 10/100M
Server size (length*width*height, w/o package), mm900*482.6*130
Server size (length*width*height, with package) , mm1,150*640*260
Net weight, kg42.7
Gross weight, kg48.6
Environment Requirements
Inlet coolant temperature, °C20~50
Coolant flow, L/min16.0~20.0
Coolant pressure, bar≤3.5
Working coolant(3-2)Antifreeze/Pure water/Deionized water
Coolant pH valueAntifreeze: 7.0~9.0
Pure water: 6.5~7.5
Deionized water:8.5~9.5
Diameter of coolant pipe connector, mmOD14
Storage temperature, °C-20~70
Operation humidity(non-condensing), RH10~90%

Notes:
(1-1) The hashrate value, power on wall, and power efficiency on wall are all typical values. The actual hashrate value fluctuates by ±3%, and the actual power on wall and power efficiency on wall fluctuate by ±5%.
(1-2) Inlet coolant temperature.
(2-1) Caution: Wrong input voltage may cause server damaged.
(2-2) For detailed working coolant use and maintenance instructions, please refer to "ANTSPACE HK3 Water Cooling Container & Dry-Wet Tower Product Manual", Chapter 9, Article 3, Point 6, "Maintenance of Coolant"!

Purchasing Guidelines

1. The shipping costs, customs charges, and taxes(if any) are not included in the retail price shown above.

2. After an order has been submitted, a request to cancel the order, refund any part of the ordered amount or change the ordered item(s) to different item(s) or different batch(es) will not be entertained by BITMAIN.

3. The pictures shown are for reference only; the final shipment version shall prevail.

| Shipping Details


1. Shipments will be scheduled on a first-paid-first-ship basis for orders on which BITMAIN has received full payment.

2. You are responsible for any customs delays or returned shipments due to a lack of proper documentation. It's highly recommended to be aware of local customs clearance policies and to prepare all customs documentation ahead of time to avoid any customs clearance delays or unexpected costs.

3. Click here to download Certificates of Conformity and find additional information on customs clearance for BITMAIN products.

Warranty

1. A 365-day warranty is provided starting from the shipping date. BITMAIN will cover shipping costs when shipping a replacement unit within the warranty period.

2. The warranty only applies to the original purchaser who purchased the machine directly from BITMAIN. Once the miner is resold, warranty coverage becomes the responsibility of the re-seller.

3. If the user fails to use the product per the given instructions, specifications, and conditions provided or changes the function settings of the unit without BITMAIN's prior consent, BITMAIN will not be liable for any damage arising therefrom.

4. Click here for a complete list of the Terms & Conditions that apply to all orders placed on https://shop.bitmain.com.

Customer Reviews

4.4 ★★★★☆ 5 reviews
W
Wei Chen
Mar 30, 2026
★★★★★
Highest recommendation
After careful consideration, My highest possible recommendation. If you are even considering this, just buy it. Highly recommend.
L
Laszlo Toth
Mar 17, 2026
★★★★☆
Quick delivery
Package showed up faster than I was expecting given the listed estimate. Solid shipping experience overall.
A
Aditya Verma
Jan 30, 2026
★★★★☆
Helpful team
I have to say, Support team was helpful and resolved my issue without much hassle. Good experience.
S
Slawomir Wieczorek
Nov 11, 2025
★★★★★
Outstanding value
Outstanding value for money. Feels like you are getting away with something at this price.
P
Pawel Wojcik
Nov 2, 2025
★★★★☆
No regrets
Zero regrets about choosing this one. Has earned its place in my regular use. No complaints at all.

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