SHA-256
Bitmain Antminer S21++ 216 TH/s
216 TH/s · 3,564 W · 75 dB
Rated 5.0 out of 5 from 6 reviews
Compare miners
Antminer S21+ 216 TH/s vs S21 Pro 234 TH/s vs Avalon A15 Pro 221 TH/s
Comparing three of the most competitive professional Bitcoin miners available from EU stock: the Bitmain Antminer S21+ (216 TH/s), Antminer S21 Pro (234 TH/s) and Canaan Avalon A15 Pro (221 TH/s). All three are SHA-256 ASIC miners targeting serious Bitcoin mining operations with different price-to-performance trade-offs.
SHA-256
234 TH/s · 3,510 W · 75 dB
Rated 5.0 out of 5 from 2 reviews
SHA-256
Canaan Avalon A15Pro+ asic miner
240 TH/s · 3,720 W · 75 dB
Rated 5.0 out of 5 from 9 reviews
Swipe the right card to change it · pins the left one
What's the difference?
In plain words, from the specs and your setup.
Your setup
Live rates · every result on this page is an estimate.
The country buttons set a typical household price; change it to your own.
Currency
€1 = $1.08 = £0.86. Mining pays in USD, so we convert USD → EUR first.
±50 % around today's live price.
Pool fee
Most pools keep 1–3 % of what you mine.
Fewer hours = less power and less income.
What each miner earns at your price
Net result after the pool fee and electricity, at today's network difficulty. Check the break-even price first: below it, the miner pays for its own power.
When does it pay for itself?
Cumulative result over 24 months. Each line starts at minus the price and marks the month it crosses zero.
Solo mining: the Bitcoin lottery
Many Bitaxe and NerdQaxe owners solo-mine on CKPool: tiny odds, but a hit pays the whole block to you.
Will it fit your home?
Socket, circuit, noise, heat, network and size, each read straight from the specs.
Circuit = one 16 A × 230 V household circuit (3,680 W); keep continuous loads under 80 %. Heat: BTU/h = W × 3.412; area assumes about 70 W of winter heat loss per m² (typical EU home, varies with insulation).
How loud is it?
Each miner on a decibel ruler with everyday sounds. +10 dB sounds about twice as loud.
True-to-scale sizes
Drawn from the listed dimensions on a centimetre grid.
Value for money
Price against hashrate for the miners on our compare pages (log scales). Bubble size = power draw. Up and to the left = more hashrate per euro.
Full specs
Clean units from the product data. The best value in each row gets a green tint and a trophy; ties get none.
Best in row
| Specification | Antminer S21+ 216 TH/s | S21 Pro 234 TH/s | Avalon A15 Pro 221 TH/s |
|---|---|---|---|
| Model | S21++ | S21 pro | A15 Pro+ |
| Also Known As | Bitmain Antminer S21++ 216T | Bitmain Antminer S21 pro | Canaan Avalon A15Pro+ 240T |
| Coin | Bitcoin, BCH | Bitcoin, BCH | Bitcoin, BCH |
| Release | 2025-01-31 | 2024-06-30 | 2025-07-01 |
| Hashrate | 216Th/s | 234ths | 240Th/s |
| Noise Level | 75db | 75db | 75db |
| Sizes | 45x22x30cm | 45x22x30cm | 30x19x29cm |
| Consume, kWh | 3564w | 3510w | 3720w |
| Energy Efficiency | 16.5j/Ths | 15j/Ths | 15.5jTh/s |
| Fans | 4 | 4 | 2 |
| Voltage | 220-270v | 200-240v | 200-240v |
| Interface | Ethernet | Ethernet | Ethernet |
| Temperature | 0-40c | 0-40c | -5-35c |
| Warranty | 360days | 360days | 360days |
| Hashrate | — | — | — |
Pick this if…
Rule-based from the data above, so it changes with your setup.
Bitmain Antminer S21+ (216 TH/s)
The Antminer S21+ delivers 216 TH/s at approximately 3,570W, giving an efficiency of around 16.5 J/TH. It sits in the mid-range of this comparison — more hashrate than many previous-generation miners and a lower price point than the S21 Pro. For farms looking to scale at a reasonable cost per terahash, the S21+ offers a strong return on investment.
Bitmain Antminer S21 Pro (234 TH/s)
The Antminer S21 Pro is Bitmain's most efficient air-cooled SHA-256 miner in this lineup, delivering 234 TH/s at ~3,510W — just 15 J/TH. That efficiency advantage adds up significantly at scale: over a 3-year lifespan, the S21 Pro saves thousands of euros in electricity compared to less efficient models. At €5,549.87 it commands a premium, but the total cost of ownership often justifies it for serious miners.
Canaan Avalon A15 Pro (221 TH/s)
The Canaan Avalon A15 Pro delivers 221 TH/s at 3,662W (16.6 J/TH) and is the most affordable option in this comparison at €3,399.87 — over €1,100 cheaper than the S21 Pro. Canaan has a strong track record for hardware reliability, and the A15 Pro ships from EU stock with no import duties for European buyers. It is the best value-per-terahash option for budget-conscious miners.
Efficiency Breakdown
Efficiency is everything in Bitcoin mining — it determines your operating cost and long-term profitability. The S21 Pro wins at 15 J/TH, followed closely by the S21+ at 16.5 J/TH and the A15 Pro at 16.6 J/TH. The difference between S21 Pro and A15 Pro is ~1.6 J/TH — on a 100-unit farm running 24/7, that translates to roughly €4,000/year in extra electricity at €0.07/kWh.
Which Should You Choose?
Choose the Antminer S21 Pro if electricity is your biggest operating cost and you plan to run miners long-term — the efficiency savings pay back the premium. Choose the Avalon A15 Pro if you want to maximise hashrate per euro invested upfront and your electricity rate is low. Choose the Antminer S21+ for a solid middle ground — strong performance without the S21 Pro price tag. All three are available from EU stock at Mineshop.eu with fast European shipping and no customs fees.
Compare ASIC Miners — Buyers Guide
Use the electricity rate input above to calculate your real-world daily and monthly profitability. All miners on Mineshop.eu ship from EU stock — no customs fees, no import delays for EU buyers.
Browse ASIC Miners Popular Comparisons — ASIC miners, home miners, mini miners.
More Comparisons
Head-to-heads our customers ask about most.
- Bitcoin Home Miners Avalon Q vs Avalon Mini 3 vs Fluminer T3
- Ultra-Quiet Home Miners Avalon Nano 3S vs NerdQAxe++ vs BitAxe Gamma
- NerdAxe Family NerdOctaxe 9.6 TH vs NerdOctaxe 12 TH vs NerdQAxe++ Rev6
- Micro Bitcoin Miners BMM 101 vs BitAxe Gamma vs NerdQAxe++ Rev6.1
- Scrypt Home Miners Fluminer L2 vs Fluminer L1 vs Elphapex DG2 Mini
- Dogecoin Mini Miners Elphapex DG Home vs Volcminer D1 Mini vs Elphapex DG2 Mini
- Litecoin & Doge Pro Miners Antminer L9 vs Antminer L11 Pro vs Elphapex DG2+
- Bitcoin Farm Miners Antminer S23 vs Avalon A16 vs Bitdeer Sealminer A3
- Professional Bitcoin Miners Antminer S21+ 216 TH/s vs S21 Pro 234 TH/s vs Avalon A15 Pro 221 TH/s
