The NerdOctaxe is a fully open-source Bitcoin ASIC miner that packs eight Bitmain BM1370 chips into a single compact desktop unit. It is the most powerful device in the Nerd*axe product family, delivering approximately 9.6 TH/s at stock settings with a power consumption of around 160W and an efficiency of roughly 16.7 J/TH, according to the BitMaker-hub GitHub repository.
Think of it as the “big sibling” to the NerdQaxe++. Where the NerdQaxe++ uses four BM1370 chips to achieve 6+ TH/s, the NerdOctaxe doubles the chip count to eight, roughly doubling the hashrate. “Octa” refers to the eight ASIC chips onboard, making this the first open-source eight-chip home Bitcoin miner.
Who Created the NerdOctaxe?
The NerdOctaxe was developed within the Open Source Miners United (OSMU) community, the same decentralized group of developers and engineers behind the Bitaxe and the entire Nerd*axe product family. The original NerdOctaxe design was created by @Pual91. The Rev 3.1 board (the latest revision as of 2026) was refined and extended by @BitMaker_ at Bitronics, who redesigned the power delivery system with a new 6-phase VRM and the TPS53667 power controller, per Bitronics.
The firmware runs a dedicated fork of ESP-Miner (the same foundation as AxeOS used in the NerdQaxe++ and Bitaxe), adapted for the LilyGo T-Display S3 screen. All hardware design files, PCB schematics, and firmware source code are publicly available on GitHub.
“The open-source Bitcoin mining community is building devices that would have been unthinkable even two years ago,” says Matt, Founder and CEO of Solo Satoshi. “The NerdOctaxe putting nearly 10 TH/s on a desktop at 160 watts is a perfect example.”
What Are the NerdOctaxe Specs?
The NerdOctaxe has gone through multiple hardware revisions. The two primary versions available in 2026 are the original (Rev 1/2) and the upgraded Rev 3.1. Here is how they compare:
| Specification | NerdOctaxe (Original) | NerdOctaxe Rev 3.1 |
|---|---|---|
| ASIC Chips | 8x BM1370 | 8x BM1370 |
| Stock Hashrate | ~9.6 TH/s | ~12 TH/s |
| Power Consumption | ~160W | ~200-240W |
| Efficiency | ~16.7 J/TH | ~15.8-20 J/TH |
| Power Delivery | Standard VRM | 6-phase VRM (TPS53667) |
| Power Input | 12V DC | 12V / 20A |
| Cooling | Dual low-profile coolers | Dual low-profile coolers |
| Display | 1.9″ LilyGo LCD | 1.9″ LilyGo LCD |
| Connectivity | Wi-Fi (2.4 GHz) | Wi-Fi (2.4 GHz) |
| Firmware | AxeOS (ESP-Miner fork) | AxeOS (ESP-Miner fork) |
| Noise Level | ~40 dB | ~40 dB |
| Algorithm | SHA-256 | SHA-256 |
| Open Source | Yes (GitHub) | Yes (GitHub) |
The Rev 3.1’s upgraded 6-phase VRM and TPS53667 controller allow the board to push higher clock speeds while maintaining stable thermal performance. OSMU community members have reported overclocked results reaching 10.8 TH/s at just 157W on the original revision, achieving an efficiency of 14.5 J/TH, as documented by Solo Satoshi on X.
What Is the NerdOctaxe “Titan”?
The NerdOctaxe “Titan” is not a separate product. It is a marketing name used by some sellers to describe a NerdOctaxe (typically Rev 3.1) that ships with overclocked firmware settings and upgraded cooling out of the box. The underlying hardware is the same 8x BM1370 board found in every other NerdOctaxe Rev 3.1. The “Titan” label simply indicates the unit arrives pre-configured to run at approximately 12 TH/s and ~230W rather than the stock 9.6 TH/s at ~160W.
This is an important distinction for buyers. You are not getting a different chip, a different PCB revision, or proprietary technology. You are getting a standard NerdOctaxe Rev 3.1 with the clock frequency and voltage turned up at the factory, paired with a dual rear-fan cooling setup to handle the extra heat.
Buyers should also be aware that running overclocked settings increases power consumption by roughly 40-50%, generates more heat, and may reduce chip lifespan over years of continuous operation. If you purchase a “Titan” variant, make sure the included power supply is rated for the higher wattage (12V/20A minimum). Always follow the 80% rule for safe power delivery.
How Does the NerdOctaxe Compare to Other Open-Source Miners?
The NerdOctaxe sits at the top of the open-source home mining lineup in terms of raw hashrate. Here is how it compares to other popular devices you can run at home:
| Miner | Chips | Stock Hashrate | Power | Efficiency | Open Source |
|---|---|---|---|---|---|
| Bitaxe Gamma 602 | 1x BM1370 | 1.2 TH/s | ~18W | 15 J/TH | Yes |
| Bitaxe Duo 650 | 2x BM1370 | 1.63 TH/s | ~25W | 15 J/TH | Yes |
| Bitaxe GT 801 | 2x BM1370 | 2.15 TH/s | ~39W | 18 J/TH | Yes |
| NerdQaxe++ Rev 6.1 | 4x BM1370 | 6+ TH/s | ~100W | ~15.65 J/TH | Yes |
| Canaan Avalon Nano 3S | Proprietary | 6+ TH/s | 140W | ~23 J/TH | No |
| NerdOctaxe (Original) | 8x BM1370 | ~9.6 TH/s | ~160W | ~16.7 J/TH | Yes |
| NerdOctaxe Rev 3.1 | 8x BM1370 | ~12 TH/s | ~200-240W | ~15.8-20 J/TH | Yes |
The NerdOctaxe offers the highest hashrate of any open-source Wi-Fi miner currently available. For miners who want to maximize their solo mining odds from a single device, the NerdOctaxe delivers roughly 60% more hashrate than a NerdQaxe++ Rev 6.1 at stock settings. However, it also consumes roughly 60% more power at 160W versus ~100W.
For miners seeking the best J/TH efficiency per chip, the NerdQaxe++ Rev 6.1 at ~15.65 J/TH remains the sweet spot. The NerdOctaxe Rev 3.1 approaches similar efficiency territory at ~15.8 J/TH but at a higher absolute power draw.
How Much Does It Cost to Run a NerdOctaxe?
At stock settings (~160W), the NerdOctaxe costs approximately $18.40 per month to operate at the U.S. average electricity rate of $0.16/kWh. Here is the math:
- 160W x 24 hours = 3.84 kWh per day
- 3.84 kWh x $0.16 = $0.61 per day
- $0.61 x 30 = approximately $18.40 per month
The Rev 3.1 at ~240W (or any “Titan” unit running overclocked) would cost approximately $27.65 per month at the same rate:
- 240W x 24 hours = 5.76 kWh per day
- 5.76 kWh x $0.16 = $0.92 per day
- $0.92 x 30 = approximately $27.65 per month
Compare this to a single Bitaxe Gamma 602, which costs roughly $2 per month at the same rate. The NerdOctaxe trades higher electricity costs for significantly better solo mining odds. Use the Solo Satoshi Mining Profitability Calculator to estimate your exact costs based on your local electricity rate.
Can the NerdOctaxe Find a Bitcoin Block?
Yes. The NerdOctaxe runs the SHA-256 hashing algorithm and submits valid shares to mining pools or solo mining pools like CKPool and Public Pool. If one of those shares meets the network difficulty target, the miner wins the full 3.125 BTC block reward (currently worth over $300,000).
While no NerdOctaxe-specific block find has been publicly confirmed as of early 2026, the closely related NerdQaxe++ has two verified Bitcoin block wins. Users of open source mining hardware have earned over $1 million in aggregate block rewards, and one of them happened to be a Solo Satoshi customer!
- Block #920,440 (October 23, 2025): A NerdQaxe++ Rev 6 cluster running ~6 TH/s on Public Pool earned 3.141 BTC (~$347,000), verifiable on mempool.space. The customer used the reward to pay off his home.
At 9.6 TH/s, a NerdOctaxe running solo has roughly 60% better odds per unit time compared to a single NerdQaxe++ at 6 TH/s. Running multiple units or overclocking further improves those odds.
How Does the NerdOctaxe Work?
The NerdOctaxe operates on the same fundamental principles as every Bitcoin ASIC miner, scaled up to eight chips.
The hardware: Eight Bitmain BM1370 chips (the same chip used in the industrial-grade Antminer S21 Pro) perform trillions of SHA-256 hash computations per second. Each chip is powered by a regulated voltage from the onboard VRM (voltage regulator module). The Rev 3.1’s upgraded 6-phase VRM provides cleaner, more stable power delivery, which enables higher clock speeds and greater hashrate.
The firmware: The onboard ESP32-S3 microcontroller runs AxeOS, the same open-source firmware used across the Bitaxe and Nerd*axe ecosystem. AxeOS handles communication with your chosen mining pool via the Stratum protocol over Wi-Fi (2.4 GHz). The firmware also manages chip clocking, fan speed, temperature monitoring, and the onboard 1.9″ LilyGo LCD display.
The display: The color LCD screen cycles through multiple information screens showing real-time hashrate, chip temperature, power consumption, efficiency (J/TH), live Bitcoin price, and network statistics. Two programmable buttons allow you to navigate between screens.
The cooling: The NerdOctaxe uses dual low-profile CPU coolers (Thermalright AXP90 series) mounted on standard Intel LGA115x / AMD AM4 mounting holes. This means you can swap in aftermarket coolers if desired. Noise output stays around 40 dB, comparable to a quiet office environment.
How Do You Set Up a NerdOctaxe?
Setup follows the same process as other Nerd*axe devices and takes approximately 5-10 minutes. Solo Satoshi has a detailed NerdQaxe++ setup guide that applies to all Nerd*axe devices including the NerdOctaxe.
- Power on: Connect the 12V power supply (20A minimum for Rev 3.1). The miner boots and creates a Wi-Fi hotspot named NerdQAxe_XXXX.
- Connect: Join the NerdOctaxe’s Wi-Fi hotspot from your phone or computer. You should be redirected to the web portal. If not, navigate to http://192.168.4.1 in your browser.
- Configure Wi-Fi: Enter your home network SSID and password. The NerdOctaxe only supports 2.4 GHz Wi-Fi (not 5 GHz).
- Set your pool and wallet: Enter your Bitcoin wallet address and mining pool URL. Popular options include Public Pool, CKPool, and Ocean.
- Save and restart: Click save, restart the device, and it begins mining. The LCD screen shows your live hashrate within seconds.
Once connected to your network, the AxeOS web dashboard is accessible from any device on your local network by entering the miner’s IP address in a browser. From there you can adjust clock frequency, voltage, fan curves, and monitor per-chip diagnostics.
Where Does the NerdOctaxe Fit in the Nerdaxe Family?
The Nerd*axe product line has evolved rapidly since its origins as an educational NerdMiner. Each model increases chip count and hashrate while maintaining the same open-source AxeOS firmware and community-driven development ethos:
- Nerdaxe Gamma: 1 chip (BM1370), ~1.2 TH/s, ~18W. Entry-level single-chip Nerd miner.
- NerdQaxe+: 4 chips (BM1368), ~2.5 TH/s, ~60W. First quad-chip Nerd model.
- NerdQaxe+ Hydro: Liquid-cooled variant for silent operation.
- NerdQaxe++ Rev 6.1: 4 chips (BM1370), 6+ TH/s, ~100W. Two confirmed block finds. Assembled in USA by Solo Satoshi.
- NerdQaxe++ Hydro: Liquid-cooled variant for silent operation.
- NerdOctaxe: 8 chips (BM1370), ~9.6-12 TH/s, ~160-240W. The most powerful Nerd-series miner.
All models share the same AxeOS firmware ecosystem, meaning the setup process, web dashboard, and community support channels are consistent across the entire lineup. If you have experience with a Bitaxe or NerdQaxe++, you already know how to operate a NerdOctaxe.
Is Solo Mining with a NerdOctaxe Worth It?
Solo mining with a NerdOctaxe is a probability game, not a guaranteed return. At 9.6 TH/s against a total Bitcoin network hashrate exceeding 800 EH/s (per mempool.space), the odds of any single device finding a block in a given year are small. But the payoff for hitting a block is the full 3.125 BTC reward (plus transaction fees), currently worth over $300,000.
This is why the Bitcoin mining community often refers to home solo mining as “lottery mining.” The math works the same way a lottery ticket does: low probability, massive payoff. The difference is that solo mining Bitcoin also contributes to network decentralization, secures the Bitcoin network, and gives you direct participation in the protocol.
For miners who prefer consistent (but smaller) payouts, the NerdOctaxe works with pool mining as well. Pools like Ocean, Braiins, and ViaBTC allow small miners to earn proportional satoshi rewards daily.
What Should You Consider Before Buying a NerdOctaxe?
The NerdOctaxe is not the right choice for every miner. Here are the key factors to evaluate:
Power requirements: At 160-240W, the NerdOctaxe needs a dedicated 12V power supply rated for at least 15-20A. This is more substantial than a Bitaxe’s 5V USB-style power but still well within standard household electrical capacity. You will not need a 240V outlet or any special wiring.
Heat output: 160-240W of continuous heat output is noticeable in a small room. In winter, this is free hashrate heating. In summer, it adds to your cooling load. Plan your placement accordingly.
Noise: At approximately 40 dB, the NerdOctaxe is quiet enough for a home office or living room. It will not disturb conversation or sleep in an adjacent room.
“Titan” upsells: Be cautious of sellers charging a premium for “NerdOctaxe Titan” units. As covered above, the Titan is simply a Rev 3.1 with pre-applied overclock settings. Any Rev 3.1 owner can achieve the same 12 TH/s by adjusting two settings in the AxeOS dashboard. Do not overpay for a firmware configuration.
Purchase source: Because the NerdOctaxe is open-source hardware, multiple sellers manufacture and sell their own versions. Quality, firmware versions, cooling solutions, and support vary significantly between sellers. Always buy from a trusted and verified seller with a documented track record, warranty coverage, and customer support.
Alternatives in the same hashrate range: If you want approximately 6 TH/s in a more compact, proven form factor with two confirmed block finds and a 90-day warranty, the NerdQaxe++ Rev 6.1 is available now from Solo Satoshi with same-day shipping from Houston, Texas. The Canaan Avalon Nano 3S also delivers 6+ TH/s at 140W with a 1-year manufacturer’s warranty. For maximum hashrate per device, the Canaan Avalon Mini 3 delivers 37.5 TH/s at 1,100W and doubles as a space heater.
What Competitors Are Missing About the NerdOctaxe
After analyzing the top five sellers currently listing the NerdOctaxe, several critical gaps stand out that buyers should be aware of:
- Inconsistent specs: Competitor listings report stock hashrates ranging from 4.8 TH/s to 12 TH/s for “NerdQaxe++” and “NerdOctaxe” without clarifying which revision they are selling. Some list power consumption as low as 60W (inaccurate for an 8-chip unit). Always verify the exact revision and specs before purchasing.
- “Titan” branding confusion: Some sellers market factory-overclocked NerdOctaxe Rev 3.1 units under the “NerdOctaxe Titan” name at a premium. The hardware is identical to any other Rev 3.1. The overclock is a free firmware setting any owner can apply through AxeOS. No competitor explains this to buyers.
- No educational depth: Most competitors offer bare product listings with no explanation of how the NerdOctaxe works, how it fits in the product family, or how solo mining odds are calculated. Solo Satoshi provides comprehensive mining education, setup guides, and overclocking tutorials for the entire Nerd*axe ecosystem.
- Outdated revisions: Some sellers ship older NerdOctaxe revisions without disclosing the hardware version. The Rev 3.1 is the latest as of 2026, featuring the upgraded 6-phase VRM. Always confirm the revision number before buying.
- No USA assembly or same-day shipping: Most NerdOctaxe sellers ship from China, Latvia, or other international locations with 3-7+ day shipping times and limited post-sale support. Solo Satoshi’s NerdQaxe++ units are assembled in the USA and ships same-day from Houston, Texas.
