Bitaxe Copperzilla | 1.3 TH/s

The Bitaxe Copperzilla is technically a Bitaxe Gamma – same BM1370 ASIC, around 1.3 TH/s, roughly 15 W, about 15 J/TH, 0.91-inch OLED, AxeOS and 2.4 GHz Wi-Fi. The difference sits directly on the chip: instead of a standard heatsink it carries a massive solid copper block with the 40 mm PWM fan working over it. Copper takes heat away faster and buffers it rather than leaving it sitting on the ASIC.

Day to day that does not show up as a bigger number on the dashboard but as a calmer temperature: same clock, more distance to the ceiling, fewer reasons for the fan to spin up. Power draw is unchanged – roughly 15 W stays roughly 15 W, so about 11 kWh and around €3 a month at €0.28/kWh.

That composure is exactly the point when solo mining: the device is meant to run month after month without summer heat or a cramped spot slowing it down. Every hash it submits is a ticket on the next block – and that block currently pays 3.125 BTC plus every transaction fee in it, credited straight to the address stored in your AxeOS. None of that is plannable and it is not an income model; the tickets cost about €3 of electricity a month, and in between your miner confirms transactions and spreads the network hash rate across more shoulders.

• Solid copper instead of a standard heatsink: copper moves heat away from the BM1370 faster and keeps the ASIC temperature steadier even after hours under load.
• Quieter at the same temperature: because the heatsink absorbs more heat, the 40 mm fan has to spin up less often to hold the same target.
• Room to raise the clock: anyone touching frequency and voltage in AxeOS needs thermal headroom first – that is what the heatsink provides.
• Otherwise unchanged: same firmware, same setup, same 5V/6A power supply as the entry model.

A better heatsink does not create hash rate. It makes sure the ASIC can hold the configured performance instead of throttling back as the temperature climbs. In a cool, airy room you will hardly see a difference to a well-placed standard device. In a warm attic, on a tight shelf or with a raised clock you notice it clearly.

Two things remain your job: clean airflow around the device and a stable power supply. When overclocking, the current demand rises before temperature becomes the problem – so the order is position, power supply, then clock.

All that copper makes the build heavier than a standard Bitaxe. On a solid surface with the stand that is irrelevant; on wobbly shelves or vertical mounts you should plan for it.

Setup is no different from the other Bitaxe models: socket, 2.4 GHz Wi-Fi, browser. Have your pool details and Bitcoin address ready; the full walk-through is in the setup guide.

For everyone planning the miner as a long-distance runner: around the clock in the homelab, in the office or in a room without air conditioning. For tinkerers who adjust frequency and voltage and need temperature headroom for it. And for anyone who simply wants the more solid piece of hardware on the desk, because they look at it every day.

The premium pays off less if your miner stands free in a cool room and runs at stock settings – then the Bitaxe Gamma does the same job. And if you are after more hash rate rather than better cooling, the route goes through more chips, not a bigger heatsink: the Bitaxe GT delivers around 2.15 TH/s at 43 W from two BM1370.

Miner, 5V power supply, stand and quick start guide are included. You bring 2.4 GHz Wi-Fi, a socket, pool details and your Bitcoin address. No PC or Raspberry Pi needed – AxeOS runs on the device itself.

For the heatsink to work it needs air: standing free, nothing right in front of the fan, no closed cabinet. If the location cannot be changed, airflow usually helps more than another component.

Thermally the Copperzilla is well equipped. Useful additions are more about noise and infrastructure:

• Noctua NF-A4x20: a quiet 5 V fan in the 40 mm format that matches the Copperzilla stock fan.
• Bitcoin nodes: the next step when your own hash rate and your own validation should come together.

The Bitaxe Copperzilla is the right choice when your miner should not stand out but simply keep running: familiar BM1370 performance, open firmware, your own address – and a heatsink that takes the temperature question off your hands.