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The most popular miners for Bitcoin solo mining compared. Performance, advantages, and disadvantages.

As a passionate observer of the Bitcoin scene, I’ve been following with great interest over the past few years how the home-mining movement has really taken off thanks to open-source projects like Bitaxe and NerdMiner. These small devices make solo mining accessible without requiring a huge investment in expensive industrial equipment. Today, I’m comparing three popular models: the compact Bitaxe Gamma 601, the more powerful NerdQaxe, and the even stronger NerdOctaxe. All of them are based on the efficient BM1370 ASIC chip (known from Antminer S21 models), support WiFi, are open-source, and designed for home use. They are primarily for fun, learning, and decentralized network support – real profits are more like a lottery at current difficulty levels.

The Bitaxe Gamma 601: The Efficient Entry-Level Option

The Bitaxe Gamma 601 is a true classic and a hit for beginners. With a single BM1370 chip, it delivers around 1.2 TH/s at just 15–17 watts – an efficiency of about 14 J/TH that is hard to beat in this class. The device is extremely compact (approx. 15 x 10 x 5 cm, under 350 g), quiet (around 40 dB), and produces almost no heat. It features simple operation, often with a small display, and is plug-and-play ready. Many users appreciate the open firmware (AxeOS), which allows customization and monitoring.

Advantages: Excellent energy efficiency, low purchase price (usually around €150), minimal power consumption – ideal for continuous operation even in an apartment or on solar power. It feels like a real hobby device that you can just let run. Personally, I love the minimalist aesthetic: small, quiet, and unobtrusive.

Disadvantages: The hashrate is modest, which significantly reduces the chances of finding a block. For ambitious miners, it can quickly feel insufficient, and overclocking potential is limited without risking the device’s lifespan.

The Bitaxe Gamma 601

The NerdQaxe: The Balanced All-Rounder

The NerdQaxe (especially the ++ version) takes it a step further by integrating four BM1370 chips. This typically achieves 4.8 TH/s (sometimes up to 6 TH/s on optimized models) at 70–80 watts. Efficiency is around 15 J/TH – slightly higher than the Gamma but still impressive for home use. It is compact but a bit larger than the Bitaxe, often equipped with a nicer 1.9-inch color display and button controls. The cooling is active but remains pleasantly quiet for home environments.

Advantages: Significantly higher hashrate than the Gamma with reasonable power consumption – a good compromise between performance and practicality. The enhanced interface makes monitoring and adjustments more comfortable. Many see it as the “sweet spot” for hobby miners who want more than just a lottery ticket without driving power consumption too high.

Disadvantages: Higher purchase price and somewhat more heat/power draw than the Gamma. For continuous operation, good ventilation is important, and the price-performance ratio compared to multiple Gammas can vary depending on current offers.

NerdQaxe Solo Miner

The NerdOctaxe: The Power-User Among Home Miners

With eight BM1370 chips, the NerdOctaxe is the heavyweight of the three. It delivers 9.6 to 12 TH/s at 160–240 watts (efficiency approx. 16–20 J/TH). Dual or multiple fans provide cooling, making it a bit louder (around 40–50 dB). The device is larger and more robustly built, often with an improved display and sturdier housing. It is suitable for users who want to get more seriously into the home-mining scene. Otherwise, you’re quickly in the price range of an Antminer S19 or S21 or the Avalon Q.

Advantages: Best hashrate of the three – noticeably better chances of a solo block. Scalable and more future-proof if you want to expand later. The open-source community regularly provides firmware updates and optimizations.

Disadvantages: Significantly higher power consumption and purchase price. The noise and heat make it less living-room-friendly; a basement or separate room is often more suitable. Efficiency per TH is slightly worse than with its smaller siblings.

NerdOctaxe Bitcoin Miner

Comparison of the Three Devices

The Bitaxe Gamma 601 is the penny-pincher and efficiency king: It uses only a quarter of the power of the NerdQaxe for a quarter of the performance – perfect if electricity is expensive or you want to run multiple units in parallel. The NerdQaxe sits in the middle: four times the hashrate for four times the consumption, but with better usability and a touch more “wow factor” thanks to the display. The NerdOctaxe finally doubles the Qaxe’s performance again but also costs correspondingly more in power and space. All three share the open-source DNA, so you can swap or modify firmware – a huge advantage over closed systems. In everyday use, the Gamma wins for pure efficiency and discretion, while the Qaxe and Octaxe deliver more of a “mining feeling.”

Personally, I don’t think any of the three will “print money” – that’s rarely the case with solo mining. Instead, it’s about the fun, the learning experience, and the good feeling of supporting the network in a decentralized way. Technically, they are all solid; the differences lie mainly in scaling and lifestyle compatibility.

Recommendation: Which Device for Whom?

If you are a complete beginner, want to minimize electricity costs, or are simply looking for an unobtrusive device for your desk, go for the Bitaxe Gamma 601. It is affordable, efficient, and quickly gives you that Bitcoin mining feeling without major risks.

For most hobby miners with a bit more budget and the desire for noticeably better chances, I recommend the NerdQaxe. It offers the best compromise between performance, ease of use, and home suitability – my personal favorite for everyday use.

The NerdOctaxe is worthwhile for power users or those with prior experience who are willing to invest more in power and space. It is ideal if you want to scale seriously or have the highest solo chances in the home-mining class.

In the end, the choice depends on your electricity rate, budget, and how much “mining lifestyle” you are looking for. All three are great entry points into the world of decentralized Bitcoin security.

Where Can I Buy the Bitaxe, NerdQaxe, and NerdOctaxe?

Since these are open-source miners, there isn’t “one manufacturer” or supplier. In theory, you can basically build one yourself.

You should be cautious (or at least careful) with offers on the Amazon marketplace. It is often unclear where the devices come from.

However, there are now many suppliers specializing in the assembly and distribution of Bitcoin home miners.

We can recommend Power Mining, which sells miners in excellent quality with their own 3D-printed stands and accessories such as extra coolers.

Shipping is fast and secure from the USA and Europe.

If you use our link or the code SASCHAGUNNEL, you can save 10 percent on your purchase at Power Mining. Especially worthwhile for the higher-priced models.

Buy all miners at Power Mining with 10% discount

Other reputable suppliers from the USA, run by genuine Bitcoin enthusiasts and family businesses, are Solo Satoshi and Gekko Science.

By the way, if you want to run your miner via your own Bitcoin Node, check out the Umbrel Private Cloud.

Run your own Bitcoin Node via Umbrel

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