Antminer L5 Profitability: Legacy Scrypt Economics

The Antminer L5 at 2.05 GH/s and ~1.1 J/MH belongs to an earlier efficiency era. That does not make it worthless — it makes its viable use case narrow. Free or heavily discounted power, heat reuse where the warmth has real value, curtailment arbitrage, and educational or test-bench duty are all legitimate.

2.05 GH/s at 2260 W versus an L7 or L9. What legacy hardware cannot do is compete on a normal commercial power rate, and any seller implying otherwise is selling a story rather than a machine.

Run the arithmetic before the emotion: multiply the machine's wall draw in kilowatts by 24 and by your all-in power rate to get daily electricity cost, then subtract that from the pool revenue the hashrate earns at today's difficulty. For Antminer L5 at 2260 W that is roughly 54.2 kWh a day per unit before cooling overhead.

Compare that daily electricity cost against the revenue the hashrate earns today. For high joule-per-terahash hardware the answer at typical rates is frequently negative, and it becomes more negative with every difficulty adjustment. Only a very low power rate changes the conclusion.

Older platforms have a thinning parts supply. Hashboards get harder to source, PSUs age out, and repair economics stop making sense when a board costs a meaningful fraction of the machine's market value. Buy spares at the same time you buy machines, or plan to cannibalise.

Our repair centre still services older Bitmain platforms and we hold consumables for the common models, which extends useful life — but it does not change the underlying efficiency arithmetic.

For most buyers the same money spent on newer used hardware produces more hashrate per watt and a longer remaining life. A used S19-class machine at a few hundred dollars typically beats legacy hardware on every metric that matters, and our catalogue starts at $150 for tested units.

If your motivation is nostalgia, a workbench unit or a heat source, that is a perfectly good reason to buy — just make the purchase with the right expectation attached to it.

Insist on a hashing test report with all boards online, photographs of serials, disclosure of any repairs, and a warranty even if it is short. Legacy hardware has usually lived a hard life and the seller should be able to describe that life honestly.

Every machine referenced here is listed on our catalogue with a live price, a bench-test report and a photograph of the actual unit, so you can move from this guide to a checkout in two clicks. Crypto, CashApp, Chime and bank transfer are all accepted, and orders ship worldwide from our Hong Kong warehouse to the USA, Canada, Europe, Asia, the Middle East, Latin America and Australia.

The failure mode in this market is almost never the hardware — it is the transaction. Insist on a named legal entity, a verifiable phone number, a written warranty term, an invoice issued before funds move, serial numbers photographed on the machines you are actually buying, and a test report showing hashrate and per-board temperatures from a real bench run.

Every machine referenced here is listed on our catalogue with a live price, a bench-test report and a photograph of the actual unit, so you can move from this guide to a checkout in two clicks. Crypto, CashApp, Chime and bank transfer are all accepted, and orders ship worldwide from our Hong Kong warehouse to the USA, Canada, Europe, Asia, the Middle East, Latin America and Australia.

We ship air freight via DHL and FedEx with full commercial invoices, HS codes and, where relevant, EORI and VAT documentation for EU and UK buyers. Typical door-to-door transit is three to seven business days to North America and Europe, with sea freight available for container-scale orders where the freight saving justifies the longer timeline.

Deployment support does not stop at delivery. Send us your panel schedule, ambient conditions and pool preference and we will return a circuit plan, a firmware recommendation and a monitoring configuration so the fleet earns from the first day rather than the second week.