Antminer L7 Profitability — LTC+DOGE Merged Mining
Is the Antminer L7 profitable?
The workhorse of the 2021–2024 Scrypt fleet, shipped in multiple factory bins (9.5 / 9.3 / 9.05 / 8.8 GH/s — approx. manufacturer specs; the 9.3 dominates the used market). At ~0.36 J/MH it burns roughly twice the energy per hash of an L11 Pro, which makes it the machine most exposed to the 2027 Litecoin halving: its economics live and die on cheap power, and its break-even electricity rate is the single number an L7 owner should watch.
The only honest answer is a live one: revenue moves with LTC and DOGE prices and network hashrate every day. Buy the bin, not the model: a 9.3 that holds spec beats a tired 9.5, and the bin selector above prices each one at your rate. The break-even electricity figure is the line — pay less per kWh than that and the machine earns, pay more and it burns.
Why both coins count
Every serious Scrypt profitability number counts both reward streams. Through AuxPoW merged mining, the same hashes earn full Litecoin and full Dogecoin block rewards on one power bill — LTC-only math understates Antminer L7 revenue by the entire DOGE share. The mechanics are on our LTC+DOGE merged mining calculator, which this page's math mirrors exactly.
Specs & physical reality
| Spec | Value |
|---|---|
| Factory bin — 9.5 GH/s bin | 9.5 GH/s · 3,425 W · 0.36 J/MH |
| Factory bin — 9.3 GH/s bin | 9.3 GH/s · 3,348 W · 0.36 J/MH |
| Factory bin — 9.05 GH/s bin | 9.05 GH/s · 3,260 W · 0.36 J/MH |
| Factory bin — 8.8 GH/s bin | 8.8 GH/s · 3,168 W · 0.36 J/MH |
| Input power | 200–240 V dedicated circuit |
| Current draw | ≈14.9 A at 230 V (9.5 GH bin) |
| Heat output | ≈11,686 BTU/hr (3,425 W — all of it becomes room heat) |
| Noise | ≈75 dB (manufacturer claim) — server-fan loud, not for living spaces |
| Warranty | 365-day manufacturer term is typical, from ship date — confirm in writing; used units carry none |
| Spec source | Bitmain — approx. manufacturer figures; real units vary by bin, firmware and temperature |
FAQ
- Does the Antminer L7 mine LTC and DOGE at the same time?
- Yes — Scrypt machines merge-mine. The same proof of work is submitted to both chains, earning full rewards on each. Most major LTC pools credit DOGE automatically alongside LTC.
- What does the revenue figure exclude?
- Transaction fees on both chains (small next to subsidies, so figures are slightly conservative), cooling power, and difficulty drift. The 2027 Litecoin halving is a scheduled cut, not drift — the payback tile flags it when your horizon crosses it.
- Buying an L7 used — what should I check?
- Hash it on a test pool before paying (used units often miss rated spec), confirm the bin on the label matches what was advertised — the 9.3 GH bin dominates the used market — inspect fans and heatsink fins for dust cake and corrosion, and ask for the PSU serial: mismatched PSUs are the most common failure on this model.