SPOT Bitcoin Miner S21 XP

Bitmain Antminer S21 XP – 270 TH/s SHA-256 Bitcoin miner, 3645W, 13.5 J/TH. Top air-cooled ASIC for professional BTC mining operations.

Function
BTC/BCH/BSV SHA256 Air-cooling Miner
Specifications
270T 3645W 13.5J/T
Rating ★★★★☆ 4.4 9 reviews
Price
17 $/T
4,590 $/Unit
Shipping Date
SPOT Shipping in 7 working days after fully paid
Payment Method
BTC BCH BSV
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Performance Curves

1. Hashrate vs. Ambient Temperature

Bitcoin Miner S21 Xp - Image 1

2. Power Efficiency vs. Ambient Temperature

Bitcoin Miner S21 Xp - Image 2

Specifications

Product GlanceValue
ModelS21 XP
Sub270
Version10
Crypto algorithm/coinsSHA256 | BTC/BCH/BSV
Typical hashrate,TH/s(1-1)270
Power on wall @25℃(1-2), Watt(1-1)3645
Power efficiency on wall@25℃(1-2),J/TH(1-1)13.5
Detailed CharacteristicsValue
Power supply
Phase1
Power supply AC input voltage(2-1) , Volt220~277
Power supply AC input frequency range, Hz50~60
Power supply AC  input current(2-2), Amp20
Hardware Ronfiguration
Network connection modeRJ45 Ethernet 10/100M
Server size (length*width*height, w/o package), mm450*219*293
Server size (length*width*height, with package), mm630*350*430
Net weight, kg18.7
Gross weight, kg21.5
Noise(2-3)@30℃, dBA76
Max airflow(2-4), CFM550
Environment Requirements
Operation temperature, ℃-20~45
Storage temperature, ℃-20~70
Operation humidity(no condensation), RH10%~90%
Operation altitude(2-5), m≤2000

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 air temperature.
(2-1) Caution: Wrong input voltage may probably cause server damaged.
(2-2) Single-phase AC input 20A.
(2-3) Max condition: Fan is under max RPM(rotation per minute).
(2-4) When the server is dusty or the environment is poorly ventilated, the server airflow will reduce.
(2-5) When the server is used at an altitude from 900m to 2000m, the highest operating temperature decreases by 1℃ for every increase of 300m.

Purchasing Guidelines

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 prepare all customs documentation ahead of time to avoid 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 ★★★★☆ 9 reviews
T
Thabo Ndlovu
Apr 6, 2026
★★★★★
Premium quality
Quality is immediately obvious. Materials are solid, finish is clean, and construction is tight. Would buy again.
A
Alfie Drummond
Mar 8, 2026
★★★★☆
Recommended
For what it is worth, Would recommend this without much hesitation. Reliable, well made, and good value overall.
M
Mateo Sanchez
Feb 19, 2026
★★★★☆
Good customer service
Good customer service when I needed it. Got a real answer quickly without unnecessary back and forth. Thumbs up from me.
N
Nicolas Contreras
Feb 17, 2026
★★★★☆
Well made
Well made and clearly designed with care. You can tell quality was a consideration in production. A solid choice.
D
Derek Arnold
Feb 4, 2026
★★★★★
Zero issues
Update: Zero issues from start to finish. Ordering, delivery, and performance all went smoothly.

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