How Many ASICs Fit in a 20ft vs. 40ft Container?

For Bitcoin miners, scalability is everything. The question isn’t just how powerful your machines are — it’s also about how many you can fit into a given space. That’s why containerized mining has become so popular: it offers mobility, efficiency, and rapid deployment. But when it comes to sizing, one question comes up again and again: how many ASIC miners can fit inside a 20ft container compared to a 40ft container?

MINING TECHNOLOGY & EFFICIENCY

Chris Boubalos

9/15/2025

Standard Container Dimensions

  • 20ft container: ~6.1m long x 2.4m wide x 2.6m high

  • 40ft container: ~12.2m long x 2.4m wide x 2.6m high

Both sizes can be converted into mobile mining farms with racks, power distribution, and cooling systems. The difference lies in capacity, cost efficiency, and deployment flexibility.

20ft Container Capacity

A 20ft mining container typically accommodates:

  • Air-cooled ASICs: ~150–200 units (e.g., Antminer S19/S21 class)

  • Hydro-cooled ASICs: ~100–120 units (due to water piping & space requirements)

  • Immersion setups: ~80–100 units, depending on tank design

✅ Advantages

  • Lower upfront cost

  • Easier to transport and deploy

  • Suitable for pilot projects or smaller sites

❌ Disadvantages

  • Limited scalability

  • Higher cost per unit of hashrate compared to 40ft

40ft Container Capacity

A 40ft mining container typically accommodates:

  • Air-cooled ASICs: ~300–400 units

  • Hydro-cooled ASICs: ~220–250 units

  • Immersion setups: ~180–200 units

✅ Advantages

  • Higher density and efficiency

  • Better ROI per unit of infrastructure

  • Ideal for large-scale operations near cheap renewable energy

❌ Disadvantages

  • More expensive to buy, transport, and install

  • Requires stronger power supply and cooling systems

  • Less flexible for relocation compared to 20ft units

ROI Considerations

Choosing between 20ft and 40ft containers depends on:

  1. Energy availability – Do you have 1 MW or 2+ MW available?

  2. Investment scale – Are you testing the waters or going big?

  3. Cooling system – Air-cooled vs. hydro vs. immersion affects density.

Example:

  • A 40ft container with 350 S19 Pro miners (~110 TH/s each) = ~38,500 TH/s.

  • A 20ft container with 180 units = ~19,800 TH/s.

  • At equal energy cost, the 40ft delivers nearly double hashrate in a single deployment, with lower cost per TH.

Which One Should You Choose?

  • 20ft Container → Best for small to medium projects, pilot deployments, or sites with limited power.

  • 40ft Container → Best for large-scale operations, long-term projects, and maximum ROI near cheap renewable energy.

Conclusion

Containerized mining offers flexibility and scalability, but sizing matters. A 20ft container is cost-effective for smaller projects and mobility, while a 40ft container delivers superior efficiency at scale.

At Entropy888, we design containerized solutions powered by renewable energy — customized to your project’s size, cooling method, and ROI goals.