The Bitaxe Gamma 602 is one of the most talked-about pieces of mining hardware in the enthusiast community right now — and for good reason. It runs the same BM1370 chip as Bitmain's flagship industrial miner, draws about 18 watts from a standard power outlet, and connects to the Bitcoin network via Wi-Fi to solo mine 24/7.
But "worth it" depends entirely on what you're expecting from it. This review breaks down exactly what the Gamma 602 is, what it isn't, who should buy one, and who probably shouldn't.
What Is the Bitaxe Gamma 602?
The Bitaxe is an open-source ASIC Bitcoin miner project — meaning the hardware design files, firmware, and software are all publicly available. The Gamma 602 is the current flagship model in the Bitaxe lineup, built around Bitmain's BM1370 chip — the same 5nm silicon that powers the Antminer S21 Pro.
The result is a compact, single-chip miner with world-class silicon efficiency in a desktop-friendly, near-silent package. It's designed exclusively for solo mining — connecting directly to the Bitcoin network without a pool, giving you a small but real statistical chance of finding a full block on your own.
You can find the Gamma 602 listed in our store here: Gamma 602 Bitcoin Solo Miner — BM1370
Key Specs
- Chip: Bitmain BM1370 (5nm — same as Antminer S21 Pro)
- Hashrate: 1.2–1.8 TH/s (varies by firmware version and thermal solution)
- Power consumption: ~18W at stock settings
- Efficiency: ~12.5–15 J/TH
- Connectivity: 2.4GHz Wi-Fi
- Firmware: AxeOS (open source, browser-configurable)
- Display: Built-in OLED showing hashrate, temperature, and best share difficulty
- Noise: Under 40 dB — genuinely quiet
- Mining mode: Solo only (connects directly to Bitcoin network or solo pool)
The BM1370 Chip: Why It Matters
The BM1370 is Bitmain's 5nm mining chip, and it's the reason the Gamma 602 is such an interesting device. At stock settings it achieves approximately 12.5 J/TH — efficiency on par with industrial-grade hardware that costs thousands of dollars and consumes kilowatts of power.
To put that in context: the Antminer S21 Pro runs at 15 J/TH across 234 TH/s. The Gamma 602 achieves similar per-hash efficiency in a single-chip device drawing 18W. The silicon is genuinely world-class — it's just operating at a fraction of the scale.
The 602 improves on the earlier Gamma 601 through better thermal management. An upgraded high-density pin-fin heatsink and improved power delivery allow it to run stably at 1.5–1.8 TH/s where the 601 would throttle under heat at those frequencies.
What Does It Actually Cost to Run in Australia?
This is where the Gamma 602's appeal becomes very clear. At 18W continuous draw:
- Daily electricity cost at $0.30/kWh (a typical Australian residential rate): approximately $0.13/day
- Monthly cost: approximately $3.89/month
- Annual cost: approximately $46.70/year
For context, Australian electricity is among the more expensive in the world — but even at those rates, the Gamma 602 costs less annually than most streaming subscriptions. For a deeper look at how Australian electricity costs affect mining profitability more broadly, see: Electricity Prices in Australia and the Real Cost of Crypto Mining in 2026
Solo Mining: Understanding What You're Actually Buying
This is the most important section of this review — because misunderstanding it is the source of most buyer disappointment.
The Gamma 602 is not a profitable miner in the traditional sense. At 1.2–1.8 TH/s, it represents a vanishingly small fraction of the Bitcoin network's total hashrate (which sits above 1,100 EH/s as of 2026). The expected time to solo-find a block at this hashrate is statistically measured in hundreds to thousands of years.
What you are actually buying is a lottery ticket that never expires — one that runs 24/7, costs roughly $4/month in electricity, and gives you a non-zero probability of finding a block worth 3.125 BTC (approximately $300,000–$400,000+ AUD at current prices) at any moment.
Crucially: probability is not a countdown timer. Your next hash could be the winning one just as much as any other. Bitaxe miners have found full Bitcoin blocks — it has happened, and it will happen again. The question is simply whether the thrill of that possibility, combined with the educational and hobbyist value of running your own Bitcoin node, is worth the entry price to you.
For a full breakdown of how solo mining probability works, read: Mining Pool vs Solo Mining: Which Is Best for Beginners?
Who Should Buy the Bitaxe Gamma 602?
It's a great fit if you:
- Want to participate in Bitcoin mining without the noise, power draw, or cost of a full ASIC setup
- Are new to mining and want hands-on experience with Bitcoin's proof-of-work, pool configuration, and AxeOS firmware in a low-stakes environment
- Want a desk or office miner that runs silently and draws less power than a phone charger
- Understand and enjoy the solo mining lottery concept — the long-shot, always-on Bitcoin ticket
- Are interested in open-source hardware and want something you can tinker with, overclock, and customise
- Want to support Bitcoin network decentralisation by adding an independent non-pool node to the network
It's probably not for you if you:
- Are looking for consistent, predictable mining income — for that, a pool-connected miner with meaningful hashrate is the right tool
- Expect to recoup the hardware cost through mining rewards on any realistic timeline
- Want to mine altcoins — the Gamma 602 is SHA-256 Bitcoin only
How It Compares to Other Solo Miners
The Gamma 602 isn't the only solo-oriented miner in our range. Here's how it sits in context:
Gamma 602 — 1.2–1.8 TH/s, ~18W, BM1370 chip. The current benchmark for solo Bitcoin mining efficiency. Open-source AxeOS firmware. Best-in-class J/TH for a single-chip home device.
NerdQX 8 TH/s — 8 TH/s, ~180W, four BM1370 chips. For solo miners who want significantly more hashrate — and therefore better odds — while keeping power consumption well below a standard ASIC. Still open-source, still solo-focused, but a step up in both cost and potential.
Canaan Avalon Nano 3S — 6 TH/s, 140W, Wi-Fi. Bridges the gap between hobbyist and entry-level ASIC. Can be pointed at a solo pool or a standard mining pool. More hashrate than the Gamma 602 but higher power draw and less community firmware ecosystem.
If your goal is purely to maximise solo mining odds per dollar spent, the NerdQX offers a compelling step up. If you want the most efficient, quietest, most tinkerable entry point into the Bitcoin network, the Gamma 602 is hard to beat.
What About Altcoin Solo Miners?
If the solo mining concept appeals to you but Bitcoin isn't your target, there are lower-hashrate alternatives on other algorithms. The Lucky Miner LG07 is a palm-sized 12W Scrypt device designed for solo Dogecoin and Litecoin mining in the same spirit as the Bitaxe — a low-cost, always-on lottery miner for a different network.
Browse all altcoin mining hardware in our Altcoin Miners collection.
Setting It Up
Setup is one of the Gamma 602's genuine strengths. The device ships fully assembled with heatsink and fan pre-installed. Getting it running takes around 10 minutes:
- Power it via a 5V DC supply (check the listing for compatible PSU options)
- Connect to its Wi-Fi access point and enter your home network credentials in AxeOS
- Enter your Bitcoin wallet address as the "username" in the pool/solo configuration
- Point it at a solo mining pool (such as public-pool.io) or direct to Bitcoin node stratum
- The OLED display begins showing live hashrate, chip temperature, and best share difficulty
For a full walkthrough of getting your first miner online, our setup guide covers the process step by step: How to Set Up Your First Bitcoin Miner in Australia
Is There a SHA-256 Refresher Needed?
If you're new to why any of this works — what SHA-256 is, what the nonce is, why miners have to run billions of calculations per second — our explainer covers the full picture: What Is SHA-256 and How Does It Work?
The Verdict
The Bitaxe Gamma 602 is worth it — but only if you know what it is.
It is not a profitability device. It will almost certainly never return its purchase price in mined Bitcoin through consistent earnings. What it is, is the most efficient, most accessible, most tinkerable way to participate directly in the Bitcoin proof-of-work network from your home or office — for about the same monthly electricity cost as leaving a light bulb on overnight.
If you want to understand Bitcoin mining from the inside, support network decentralisation, and hold an always-on lottery ticket for a life-changing block reward, the Gamma 602 is genuinely one of the most compelling pieces of hardware in the space at its price point.
View the Gamma 602 Bitcoin Solo Miner in our store, or browse the full Bitcoin Miners collection to compare options.
Not sure which miner is right for your situation? Get in touch — we're based in Australia and happy to help you figure it out.
