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Bitmain Antminer L11 Pro (21GH)
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Bitmain
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Bitmain Antminer L11 Pro (21GH)

8290
excl. taxes / incl. shipping
In stock, ready to ship
Available at short notice
Available again soon
No longer available
Only used available
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Mining Hosting
Device can be placed in hosting at these locations:
Finland
USA
Norway
Ethiopia
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Minimum order quantity:
1
We have a minimum order quantity for this device in order to place it on our hosting site.
Payment & Financing:
Bank Transfer
Cash Payment
Mastercard (+3%)
VISA (+3%)
American Express (+3%)
Bitcoin (+1%)
USDC (ERC20)
Klarna Installment Payment (+3,5%)
Leasing from €10,000 (only in Germany)
  • Mines Litecoin and Dogecoin simultaneously (merged mining)
  • At least 1 year warranty and support
Specifications
Description
  • Manufacturer: Bitmain
  • Model: Antminer L11 Pro
  • Algorithm: Scrypt (Litecoin/Dogecoin)
  • Hashrate: 21 GH/s
  • Power consumption: 3612 watts
  • Dimensions: 195 x 290 x 400 mm
  • Weight: 15.8 kg
  • Volume: 75 db
  • Includes matching power cables

Bitmain Antminer L11 Pro — Maximum hashrate for scrypt mining with Litecoin & Dogecoin

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The Bitmain Antminer L11 Pro is the most powerful air-cooled model in the current L11 series and offers around 21 GH/s (± 5%) of computing power with a power consumption of around 3900 watts. It thus achieves an energy efficiency of around 185 J/GH — while maintaining stable performance under full load.

The L11 Pro version is aimed at users who want to use maximum hashrate per device without switching to water-cooled infrastructure. It uses the same platform as the standard L11, but has higher-selected chips with an improved performance class (chip binning).

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Technical Classification and Performance Data

Like all models in the series, the L11 Pro is based on the Scrypt algorithm and is fully suitable for merged mining — Litecoin (LTC) and Dogecoin (DOGE) can be mined simultaneously without additional power consumption or configuration effort.

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Performance data at a glance:

  • Computing power: approx. 21 GH/s (± 5%)
  • Power consumption: approx. 3900 W
  • Energy efficiency: approx. 185 J/GH
  • Algorithm: Scrypt (Litecoin & Dogecoin)
  • Merged mining: natively supported (AuxPow)
  • Cooling: air-cooled, 4 temperature-controlled fans
  • Connection: Ethernet/ bitmain interface

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Platform and operation — high stability air cooling

Despite higher computing power, the L11 Pro remains completely air-cooled. The design is based on the well-known bitmain form factor with four temperature-controlled fans and robust aluminum housing. Integration into existing mining infrastructure is possible without adjustments.

Important: Even with higher wattages, no conversion is necessary — as with other models, the power supply is provided by standardized C32 fuses at 230 V. The noise level is slightly increased, but is within the usual range of air-cooled ASICs.

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Classification within the L series

The Bitmain Antminer L11 Pro (21GH/s) forms together with Antminer L11 Standard (20GH/s) The air-cooled top group of current Bitmain scrypt miners. With around 1 GH/s more computing power, the L11 Pro is the most powerful model within the air-cooled L11 series — with an otherwise identical design and technology.

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An overview of the complete L series:

  • L7 — first Scrypt model from Bitmain (since 2021), known for stable running performance
  • L9 — second generation (since 2024) with higher hashrate and better efficiency
  • L11 (20GH/s) — current generation (since 2026), standard model with high energy efficiency
  • L11 Pro (21GH/s) — selected chip variant with higher computing power
  • L11 Hydro (33GH/s) — water-cooled model for maximum thermal stability

How the Purchase Process works

1
Make a Request
You send us an inquiry for the mining hardware you want. We check availability, prices and delivery time and, upon request, also create offers with volume discounts.
2
Get an Offer
You will receive a specific offer with all technical data, prices and the respective terms of delivery and payment. This gives you a transparent overview of hardware, costs and delivery time.
3
Confirm Order
After your confirmation, the hardware is reserved for you and the order is triggered. On request, we can configure the devices before shipping. Delivery takes place after receipt of payment.
4
Delivery or Hosting
The hardware is shipped insured or can be picked up by appointment. Alternatively, we install the devices directly at a hosting location and also help you set them up.

Warranty provided by our German Company

When you buy mining hardware via Cryptohall24, you get a guarantee of 12 months In contrast to manufacturer warranties, our warranty only begins when the hardware is sold to our customers and not as soon as it leaves the factory. Since there can often be several months between production and sale in the mining market, our customers often have a longer effective protection than with the pure manufacturer's warranty.
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Optionally, the hardware can be added to insured for up to 36 months become.

Cryptohall24 Globus

Why Customers buy Miners from Cryptohall24

⌀ 4.8 / 5 stars
based on 135 Google reviews
Legally secure corporate structure according to German law
German contact person with personal support
Transparent prices with no hidden fees - with 12 months of warranty
Professional advice about mining hardware, hosting and profitability
Support with structural, tax and legal matters
Service Excellence through long-term partnership
FAQ
Do you have any questions?

How does buying a miner work?

The process is clear and done in a few steps: you enquire about the device you want, you receive a written quote with the final price from us, and as soon as you accept it, we issue the invoice. After full payment is received, we trigger the order and the hardware is on its way to you.

That way you know where you stand at every point - from quote to delivery, a continuously supported process with a personal contact.

How can I pay?

You can pay conveniently by bank transfer in euros, in crypto (Bitcoin or USDC) or in cash against a receipt.

As throughout our business, payment is in advance: we trigger the order as soon as payment has been received in full. That keeps the process clean and predictable for both sides.

Are there discounts for larger quantities?

Yes, discounts are possible for larger quantities. How large they are depends on several factors - the device, the quantity, the delivery location and the respective procurement conditions.

That's why we state the right price best directly in an individual quote. Just tell us the model and the quantity you want and we'll work it out for you.

What is included in the delivery?

On modern ASIC miners the power supply is built firmly into the machine and is therefore always included - it does not have to be bought separately. An external power supply only existed with very old first-generation models.

So you receive a ready-to-run device. Whatever else specifically belongs to the respective product is stated in the product description; in case of doubt we clarify it in the quote.

Is the miner in stock and how quickly is it delivered?

You can see availability directly on the product; in case of doubt we confirm it in the quote. The majority of our hardware is located in our main warehouse in Hong Kong and is shipped from there directly to your destination.

Individual devices are in stock in Germany (Hamm) - those reach you particularly quickly. We state the concrete delivery date bindingly in the quote, as soon as device and destination are clear.

How is it delivered - internationally and with customs clearance too?

We deliver worldwide. We handle the shipping and the complete import processing including customs clearance for you - you don't have to deal with it yourself. We state the shipping costs transparently in the quote.

That way the miner arrives ready to use at your place or the desired site. On request we deliver directly to our hosting, then the device goes into operation without a detour.

What requirements do I need for operation?

To operate at home or in your own business you mainly need three things: a suitable power connection (ASIC miners draw several kilowatts continuously, large devices often three-phase power), enough space with ventilation, and a stable internet connection via LAN.

On top of that come noise and waste heat: air-cooled devices are very loud and heat the room noticeably. Anyone who doesn't meet these requirements usually has the miner hosted - then we take care of power, cooling and operation.

How do I set up the miner and can I get help?

Commissioning is straightforward: connect the device, plug it into the network and configure it to your mining pool and wallet. After that the miner runs around the clock.

We don't leave you alone with it - we support you with setting up pool and wallet and the first steps, even without prior experience. Your personal contact is available for questions.

What warranty do I have on the device?

As a German company we offer you 12 months' warranty on your hardware as standard.

Alternatively, you can exclude the warranty in the purchase contract and handle it via the manufacturer's warranty - then the device becomes cheaper. We offer both routes; which one makes sense for you we clarify in the quote.

Can I have this miner hosted directly instead of running it myself?

Yes. You can buy the device from us and have it hosted in the same step - then it runs at a site with low-cost electricity, without noise and heat at your home.

For many this is the most economical way. You can read how hosting works on our hosting page.

As a business customer, can I cancel or return?

We sell our devices to businesses (B2B). A statutory consumer right of withdrawal therefore does not apply in B2B business; in addition, we procure and import the hardware specifically for your order.

So you buy in a targeted and binding way. That's exactly why we calmly clarify the right device for your project before the quote - so you make the right choice from the start. If you have questions before buying, we are always reachable.

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