The definitive Bitmain Antminer S21 guide. All five variants — S21 200T, S21 Pro 234T, S21+ 216T, S21 Hyd 335T, and S21 XP Hyd 473T — with full specs, live profitability calculator, setup guide, and US warehouse pricing.
The Bitmain Antminer S21 is a Bitcoin ASIC miner using Bitmain’s 5nm BM1368/BM1370 chips. It mines SHA-256 cryptocurrencies (Bitcoin, Bitcoin Cash, Bitcoin SV). The base S21 model delivers 200 Th/s at 3,500W (17.5 J/T). The S21 series includes five variants from $1,799 to $4,200+, ranging from 200 Th/s to 473 Th/s. All models are sold in-stock from US warehouses at BitmainShop.us with 365-day warranty and 48-hour shipping.
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US WarehousesLA · Delaware · Houston
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48h ShippingFedEx / UPS · Insured
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Serial VerifiedBitmain Authenticated
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365-Day WarrantyUS Service Center
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Expert SupportMining specialists on call
All 5 Configurations
S21 VARIANTS & PRICING
The complete Antminer S21 lineup — from the $1,799 entry S21 200T to the flagship 473 Th/s S21 XP Hyd. All in stock and shipping within 48 hours from the US.
🏆 FlagshipMost Efficient
12J/T
Antminer S21 XP Hyd
Industry-leading 473 Th/s with hydro cooling at 12 J/T — the most efficient Bitcoin miner in the S21 family. Requires water-cooling infrastructure.
Hashrate473 Th/s
Power5,676W
Efficiency12 J/T ★ Best
Cooling💧 Hydro / Water
Chip5nm BM1370
Noise~50 dB
CoinsBTC · BCH · BSV
💧 Hydro CooledSilent Operation
16J/T
Antminer S21 Hyd 335T
Mid-tier hydro solution — 335 Th/s at ~50 dB noise. Perfect for dense mining farms requiring silent, high-hashrate operation without fan noise.
Hashrate335 Th/s
Power5,360W
Efficiency16 J/T
Cooling💧 Hydro / Water
Chip5nm BM1368
Noise~50 dB
CoinsBTC · BCH · BSV
⭐ Best SellerBest Air Efficiency
15J/T
Antminer S21 Pro 234T
The professional miner’s top pick. 234 Th/s with the refined BM1370 chip at 15 J/T — the most efficient air-cooled Bitcoin miner in the S21 family.
Hashrate234 Th/s
Power3,510W
Efficiency15 J/T
Cooling🌀 Air · 4 Fans
Chip5nm BM1370
Noise75 dB
Dimensions400×195×290mm
Weight18 kg
CoinsBTC · BCH · BSV
NEW 2025
16.5J/T
Antminer S21+ 216T
The S21 Plus bridges the base S21 and the Pro. 216 Th/s at 16.5 J/T with the same compact air-cooled form factor — upgraded silicon on BM1368.
Hashrate216 Th/s
Power3,564W
Efficiency16.5 J/T
Cooling🌀 Air · 4 Fans
Chip5nm BM1368
Noise75 dB
CoinsBTC · BCH · BSV
💰 Best ValueSave $200
17.5J/T
Antminer S21 200T
The accessible entry to the S21 generation. 200 Th/s at just $1,799 — 41% more efficient than the S19j Pro at a comparable budget point.
Hashrate200 Th/s
Power3,500W
Efficiency17.5 J/T
Cooling🌀 Air · 4 Fans
Chip5nm BM1368
Noise75 dB
Dimensions400×195×290mm
Weight15.4 kg
CoinsBTC · BCH · BSV
Complete Technical Data
FULL SPECS COMPARISON
Every Antminer S21 variant, every spec — side by side. Best values highlighted with ★.
Specification
S21 XP Hyd
S21 Hyd 335T
S21 Pro ★ Best Seller
S21+ 216T
S21 200T
Performance
Hashrate
473 Th/s
335 Th/s
234 Th/s
216 Th/s
200 Th/s
Power Consumption
5,676W
5,360W
3,510W
3,564W
3,500W
Efficiency (J/T)
12 J/T
16 J/T
15 J/T
16.5 J/T
17.5 J/T
Hardware
ASIC Chip
BM1370
BM1368
BM1370
BM1368
BM1368
Process Node
5nm TSMC
5nm TSMC
5nm TSMC
5nm TSMC
5nm TSMC
Cooling System
Hydro (Water)
Hydro (Water)
Air · 4 Fans
Air · 4 Fans
Air · 4 Fans
Noise Level
~50 dB
~50 dB
75 dB
75 dB
75 dB
Physical Dimensions
Dimensions (L×W×H)
570×316×430mm
570×316×430mm
400×195×290mm
400×195×290mm
400×195×290mm
Weight
16.2 kg
15.5 kg
18 kg
17.5 kg
15.4 kg
Power & Environment
Input Voltage
200–277V AC
200–277V AC
220–277V AC
220–277V AC
220–277V AC
Operating Temperature
5–40°C
5–40°C
5–45°C
5–45°C
5–45°C
Network Interface
RJ45 10/100M
RJ45 10/100M
RJ45 10/100M
RJ45 10/100M
RJ45 10/100M
Commercial
Algorithm
SHA-256
SHA-256
SHA-256
SHA-256
SHA-256
Minable Coins
BTC · BCH · BSV
BTC · BCH · BSV
BTC · BCH · BSV
BTC · BCH · BSV
BTC · BCH · BSV
Warranty
365 Days
365 Days
365 Days
365 Days
365 Days
US Price
Quote
$4,200
$2,899
$2,499
$1,799
Live Profitability
S21 PROFITABILITY CALCULATOR
Calculate daily, monthly, and annual Bitcoin mining profit for any S21 variant at your electricity rate and current BTC price.
Is the Antminer S21 still profitable in 2025–2026?
At $0.07/kWh and BTC price around $94,000–$100,000, the Antminer S21 Pro generates approximately $5–$12 daily net profit. The S21 200T generates $2–$8/day. Profitability breaks even at roughly $0.09–$0.12/kWh depending on the model. At electricity rates above $0.15/kWh, S21 mining typically becomes unprofitable. The S21 XP Hyd, with its 12 J/T efficiency, remains profitable at the highest electricity rates of any S21 variant.
Unbox to mining Bitcoin in under 15 minutes. Works for all air-cooled S21 models: S21 200T, S21 Pro, and S21+.
1
Unbox & Verify Serial Number
Remove the S21 from packaging and inspect for transit damage. Locate the Bitmain serial number on the label. Cross-check against your order confirmation and our authentication certificate.
📦 Time: ~2 minutes
2
Connect to 220V AC Power
All S21 models require 220–277V AC input. Connect to a dedicated 20A breaker circuit using a quality PDU with surge protection. Do NOT use standard 110V US outlets.
⚡ 220–277V AC · 20A breaker required
3
Connect Ethernet Cable
Plug a Cat5e/Cat6 Ethernet cable into the S21’s RJ45 port and your router or network switch. The miner gets an IP address via DHCP automatically.
🌐 Auto DHCP · 10/100 Mbps
4
Configure Mining Pool
Open the S21’s IP address in a browser. Login with admin / admin. Navigate to Miner Configuration and enter your pool’s stratum URL and Bitcoin wallet address.
The Antminer S21 delivers transformational efficiency gains over all S19 variants.
How does the Antminer S21 compare to the S19?
The S21 Pro (234 Th/s, 15 J/T) vs S19j Pro (104 Th/s, 29.5 J/T): the S21 delivers +125% more hashrate and 49% better efficiency at roughly the same power consumption. At $0.07/kWh, the S21 Pro earns ~$2.06/day vs ~$0.50/day for the S19j Pro — a 312% increase in daily profit.
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49% Better Efficiency vs S19j Pro
S21 Pro at 15 J/T vs S19j Pro at 29.5 J/T. Same circuit, nearly double the Bitcoin earned.
15 J/T (S21 Pro) vs 29.5 J/T (S19j Pro) = 49% more efficient
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+125% Hashrate at Similar Power
S21 Pro delivers 234 Th/s vs S19j Pro’s 104 Th/s — more than double the Bitcoin earning potential at only 14% more electricity.
104 Th/s → 234 Th/s = +125% more Bitcoin per day
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5nm vs 7nm — Two Chip Generations Ahead
BM1370 in the S21 Pro is built on TSMC’s 5nm process vs the S19’s 7nm BM1398.
Buy Antminer S21 with 48-hour shipping from US warehouses. No import delays, no overseas shipping fees.
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California
Ships from LA warehouse. Best rates for West Coast miners.
LA Warehouse · 1–2 day delivery
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Texas
Houston warehouse serves TX, OK, and Southwest miners.
Houston Warehouse · 1–2 day delivery
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East Coast
Delaware hub for NY, NJ, PA, MA, and East Coast deliveries.
Delaware Warehouse · 2–3 day delivery
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Midwest
IL, OH, MI, MN — all served from our multi-warehouse network.
2–4 day delivery
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Canada
Ship to Ontario, BC, Alberta. Duties apply. ~5–7 day transit.
International shipping · Duties may apply
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International
EU, AU, and select global regions. Contact for freight quote.
Contact for international quote
Frequently Asked Questions
ANTMINER S21 FAQ
What is the difference between the S21, S21 Pro, S21+, S21 Hyd, and S21 XP Hyd?
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All five share Bitmain’s 5nm chip family but differ in performance, cooling, and price. The S21 200T ($1,799) is the entry model at 200 Th/s / 17.5 J/T. The S21+ ($2,499) upgrades to 216 Th/s / 16.5 J/T. The S21 Pro ($2,899) uses the better BM1370 chip at 234 Th/s / 15 J/T. The S21 Hyd ($4,200) is water-cooled at 335 Th/s / 16 J/T. The S21 XP Hyd (473 Th/s / 12 J/T) is the water-cooled flagship.
Does the Antminer S21 work on 110V US household power?
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No. All S21 models require 220–277V AC input. Standard North American household outlets are 110V and are incompatible. You must use a 220V circuit — common options include a dryer outlet (NEMA 14-30 or 6-30) or a dedicated 220V circuit installed by a licensed electrician.
How loud is the Antminer S21?
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Air-cooled S21 models operate at 75 dB — similar to a vacuum cleaner. Not suitable for home offices or bedrooms without soundproofing. Hydro-cooled models run at ~50 dB since they replace fans with a silent water-cooling loop.
S21 Pro or S21 200T — which should I buy?
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At electricity rates under $0.08/kWh, the S21 Pro’s superior 15 J/T efficiency pays for the $1,100 price premium within 12–18 months. At rates of $0.10–$0.15/kWh, the S21 200T at $1,799 offers faster ROI since you’re spending less upfront.
What mining pools are compatible with the Antminer S21?
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All major SHA-256 mining pools work: AntPool (FPPS 2.5% fee), Foundry USA (largest US pool), F2Pool, ViaBTC, Luxor, and MARA Pool. The S21 uses standard stratum protocol.
What warranty does BitmainShop.us provide on the S21?
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All new S21 miners include Bitmain’s 365-day manufacturer warranty covering manufacturing defects. BitmainShop.us handles all warranty claims in-house from our US service centers.
How fast does BitmainShop.us ship the Antminer S21?
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In-stock S21 models ship within 48 hours from our Los Angeles, Delaware, or Houston warehouse. Standard delivery is 2–5 business days to the continental US via FedEx or UPS. All orders are fully insured and tracked.
Are the Antminer S21 units authentic Bitmain hardware?
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100% guaranteed authentic. Every S21 sold by BitmainShop.us is cross-verified against Bitmain’s manufacturer database using the unit’s serial number. We include a physical authentication certificate with every order.
Can the Antminer S21 run at high altitude?
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Yes, with adjustment. At elevations above 900m, Bitmain recommends lowering the maximum ambient operating temperature by 1°C per additional 300m of altitude.
Buy Your Antminer S21 Today
All S21 models in US stock — serial-verified, Bitmain-authenticated, 365-day warranty. Ships in 48 hours.
