Description
Why the NerdOctaxe Gamma — The Most Powerful Open Source Bitcoin Miner at 12 TH/s
Eight BM1370 ASIC chips on a single board. The NerdOctaxe Gamma is the most powerful miner in the entire Nerd-series lineup — delivering 9.6 to 12 TH/s of SHA-256 hashrate while still fitting on your desk. This is where open-source mining stops being a hobby project and starts approaching entry-level industrial hashrate.
- 9.6–12 TH/s from eight chips — Equivalent to roughly ten standard Bitaxe Gamma miners. At 12 TH/s overclocked, this single board delivers more hashrate than an Antminer S9 — the machine that once secured a meaningful percentage of the entire Bitcoin network.
- Best hashrate-per-dollar in the OSMU lineup — No open-source miner delivers more terahashes for the money. The NerdOctaxe Gamma is the efficiency king when it comes to cost versus hashrate.
- ECO mode built in — Drop to 8.1 TH/s at ~153W for quieter, cooler operation during summer months or when you want to minimize heat output. Switch back to full power when you are ready to push.
- Dual Thermalright coolers — Two Thermalright AXP90-X53 aluminum coolers provide serious thermal management for sustained 24/7 operation. ASIC temperatures stay in the 52–55°C range — well within safe limits.
- Hand-assembled in Canada — D-Central’s ASIC technicians build and test every unit in Laval, Quebec. The same team that repairs Antminers and Whatsminers is the one building your NerdOctaxe.
Technical Specifications
| Specification | Value |
|---|---|
| ASIC Chip | Bitmain BM1370 (Antminer S21 Pro / S21+) |
| Chip Count | 8 |
| Algorithm | SHA-256 |
| Hashrate (Stock, 600 MHz) | 9.6–9.8 TH/s |
| Hashrate (Tuned) | Up to 12 TH/s |
| Hashrate (ECO Mode, 495 MHz) | ~8.1 TH/s |
| Power Consumption (Stock) | 160–183W (UI) / ~208W (wall) |
| Power Consumption (ECO) | ~153W (UI) / ~171W (wall) |
| Efficiency | ~16 J/TH |
| Power Input | 12V DC via XT60 connector |
| Recommended PSU | 12V 18–20A (216–240W minimum) |
| Connectivity | Wi-Fi 802.11 b/g/n 2.4 GHz (ESP32-S3) + USB-C |
| Display | LILYGO T-Display S3 (1.9″ color LCD, 2 programmable buttons) |
| Firmware | NerdOS (ESP-Miner-Nerd fork, open-source, OTA-updatable) |
| PCB Dimensions | ~200mm x 190mm (7.9″ x 7.5″) |
| PCB Copper | 2oz copper layers |
| Cooling | Dual Thermalright AXP90-X53 aluminum coolers + optional 120mm rear fan |
| Fan Connectors | 3x 4-pin (2 with PWM control) |
| ASIC Temperature | 52.5–54.9°C (typical) |
| VRM Temperature | 39.9–43.4°C (typical) |
| Frequency Range | 95–600 MHz (adjustable per chip) |
| Noise Level | Moderate — significantly quieter than industrial ASICs |
| Monthly Electricity (Stock) | ~$15/mo at $0.12/kWh | ~$30/mo at $0.20/kWh |
| Open Source | Yes — open hardware design, GNU GPL v3.0 firmware |
Performance Modes
The NerdOctaxe Gamma gives you granular control over all eight ASIC chips. Choose the mode that fits your priorities.
| Mode | Frequency | Hashrate | Power (Wall) | Best For |
|---|---|---|---|---|
| ECO | 495 MHz | ~8.1 TH/s | ~171W | Quiet operation, summer months, lower heat output |
| Standard | 600 MHz | 9.6–9.8 TH/s | ~208W | Balanced hashrate and efficiency for 24/7 operation |
| Tuned | 600+ MHz | 10–12 TH/s | ~220–250W | Maximum hashrate for those chasing blocks |
Per-chip tuning — Unlike simpler OSMU devices, the NerdOctaxe Gamma lets you adjust frequency and voltage individually for each of the eight ASICs through the web dashboard. This means you can fine-tune performance based on each chip’s silicon quality, maximizing hashrate while keeping temperatures in check.
Smart thermal safeguards — The firmware automatically protects the hardware. If any ASIC temperature exceeds safe limits, the system throttles or shuts down to prevent damage. Safe for 24/7 unattended operation in your home.
What’s in the Box
- NerdOctaxe Gamma board (8x BM1370 ASICs, fully assembled and tested)
- Dual Thermalright AXP90-X53 aluminum coolers (pre-installed)
- LILYGO T-Display S3 screen (pre-installed)
- XT60 power cable
- Quick start guide
You will also need: A 12V DC power supply rated for at least 18–20A (216–240W) with an XT60 connector. The XT60 is the same high-current connector used in high-power RC vehicles and industrial applications — built for sustained current delivery. Compatible power supplies are available in our power supplies section.
Optional: A 120mm rear fan can be mounted for additional airflow in warmer environments. The board has dedicated fan headers ready for this upgrade.
Quick Setup
- Power on — Connect the 12V power supply via the XT60 connector. The board powers up, the display activates, and the NerdOctaxe creates its own Wi-Fi hotspot.
- Connect and configure — Join the hotspot from your phone or computer. Enter your home Wi-Fi network credentials, your Bitcoin wallet address, and your preferred solo mining pool (e.g.,
solo.ckpool.orgorweb.public-pool.io). - Save and mine — Hit save. The NerdOctaxe restarts, connects to your network, and all eight ASICs spin up. Within minutes, you are hashing at 9.6+ TH/s.
- Tune (optional) — Access the NerdOS web dashboard via the device’s IP address to adjust per-chip frequencies, switch to ECO mode, or push for 12 TH/s. Monitor hashrate, temperatures, and power consumption in real time.
Standalone operation — no Raspberry Pi, no external computer, no extra hardware required. The ESP32-S3 handles everything on-board.
The OSMU Lineup — Find Your Miner
The NerdOctaxe Gamma sits at the top of the open-source mining ladder. D-Central carries every device in the lineup — start anywhere and scale up whenever you are ready.
| Device | Hashrate | Power | Price |
|---|---|---|---|
| NerdMiner | ~78 KH/s | ~1W | $49.99 |
| NerdNOS | 80–130 GH/s | ~8W | $139.99 |
| NerdAxe | 500 GH/s | ~12W | $189.99 |
| Bitaxe Gamma | 1.2 TH/s | ~18W | $189.99 |
| Modern Minibit | ~2 TH/s | ~25W | $229.99 |
| NerdQAxe | 1 TH/s | ~15W | $199.99 |
| NerdQAxe+ / Bitaxe GT | 2.15–2.5 TH/s | 35–55W | From $299.99 |
| Bitaxe Hex | 3+ TH/s | ~90W | $499.99 |
| NerdQAxe++ | 6 TH/s | ~100W | TBD |
| NerdOctaxe Gamma (You are here) | 9.6–12 TH/s | ~160–208W | — |
The NerdOctaxe Gamma is the top of the single-board OSMU lineup. The only way to get more open-source hashrate is to run multiple units — and at that point, you are building a proper solo mining farm.
Your Next Step — Accessories and Upgrades
Scale Your Setup
- Stack units: Run multiple NerdOctaxe Gammas together for additive hashrate. Two units give you 20+ TH/s and nearly 0.4% annual solo mining probability.
- Add a NerdQAxe++: The NerdQAxe++ adds 6 TH/s at ~100W — a cost-effective way to boost your total hashrate alongside the Octaxe.
Recommended Accessories
- 12V Power Supplies — The NerdOctaxe Gamma needs a 12V/18–20A (216–240W minimum) PSU with XT60 connector. Quality server-grade or industrial PSUs recommended for 24/7 operation.
Need help with any open-source miner? D-Central is a full-service ASIC repair shop — the same technicians who build your NerdOctaxe Gamma can diagnose and repair it.
Solo Mining with the NerdOctaxe Gamma
At 9.6–12 TH/s, the NerdOctaxe Gamma gives you the strongest solo mining odds of any single open-source device available today.
The Odds — Honest Numbers
At 10 TH/s against a global network hashrate of ~850 EH/s, you have roughly a 1-in-234,000 chance per day of finding a block. Over one year of continuous operation, cumulative probability is approximately 0.16%. Push to 12 TH/s and that improves to about 0.19%.
For perspective: running a NerdOctaxe Gamma for a year is like buying a scratch ticket every single day — except this ticket costs about $15–30/month in electricity, and the prize is 3.125 BTC.
Block Wins Are Real
Solo block finds from small open-source miners are not theoretical. In October 2025, a miner running six NerdQAxe++ units (comparable combined hashrate to two NerdOctaxe Gammas) found Block #920,440 and earned 3.15 BTC — over $342,000 USD. Multiple OSMU devices have confirmed solo block wins throughout 2025, with combined payouts exceeding $1 million USD. These are verified on-chain — anyone can check them.
Why Solo Mine?
- Sovereignty — No middleman. Your miner submits work directly to the Bitcoin network. You control your hashrate.
- Decentralization — Every independent miner distributes hashrate away from large pools. You are actively strengthening Bitcoin.
- The asymmetric bet — $15–30/month in electricity for a non-zero chance at 3.125 BTC. No other bet in the world has that kind of payoff structure.
- Stack and scale — Run two NerdOctaxe Gammas for 20+ TH/s and nearly 0.4% annual probability. Add NerdQAxe++ units alongside for even more coverage.
- Every hash counts — At 10 TH/s, you are a meaningful participant in Bitcoin’s proof-of-work consensus. Your hashes secure the network for everyone.
Recommended solo mining pools: Solo CKPool (solo.ckpool.org — 2% fee, proven infrastructure, 14+ confirmed block finds) or Public Pool (web.public-pool.io — fee-free, self-hostable).
Frequently Asked Questions
What is the NerdOctaxe Gamma?
The NerdOctaxe Gamma is an eight-chip open-source Bitcoin miner using 8x Bitmain BM1370 ASIC chips — the same chips found in the Antminer S21 Pro. It delivers 9.6–12 TH/s of SHA-256 hashrate, making it the most powerful single-board miner in the Nerd-series and the entire OSMU ecosystem. It runs NerdOS firmware (a fork of AxeOS/ESP-Miner), connects via Wi-Fi, and is designed for 24/7 home operation with dual Thermalright coolers.
What are the chances of finding a Bitcoin block?
At 10 TH/s, roughly 1-in-234,000 per day. Over one year of continuous operation, cumulative probability is approximately 0.16%. At 12 TH/s (tuned), annual probability rises to about 0.19%. These odds are significantly better than any single-chip or quad-chip OSMU device — the NerdOctaxe Gamma gives you the best solo mining probability in the open-source lineup.
What power supply do I need?
The NerdOctaxe Gamma requires a 12V DC power supply rated for at least 18–20A (216–240W minimum) with an XT60 connector. The XT60 is a high-current connector rated for sustained loads — the same connector used in high-power RC vehicles and professional equipment. A quality server-grade or industrial PSU is recommended for 24/7 operation. Check our power supplies section for compatible options.
How loud is the NerdOctaxe Gamma?
The dual Thermalright AXP90-X53 coolers produce moderate noise — noticeably more than a single Bitaxe but dramatically quieter than any industrial ASIC miner. In ECO mode, noise is reduced further. The NerdOctaxe is suitable for a home office, spare room, or closet. It would not be ideal for a bedroom nightstand.
How much electricity does it use per month?
At stock settings (~208W wall draw): approximately $15 CAD/month at $0.12/kWh (Quebec average) or $30 CAD/month at $0.20/kWh. In ECO mode (~171W wall draw): approximately $12.30/month at $0.12/kWh. For context, that is roughly the same as running a gaming PC for the same hours.
What is ECO mode?
ECO mode reduces the ASIC frequency to 495 MHz, dropping hashrate to approximately 8.1 TH/s and wall power to ~171W. This means less heat, less noise, and lower electricity costs — ideal for summer months, warmer rooms, or if you simply want a quieter setup. You can switch between ECO and full power modes instantly through the web dashboard.
NerdOctaxe Gamma vs NerdQAxe++ — which should I buy?
The NerdOctaxe Gamma (8 chips, 9.6–12 TH/s, ~208W) is exactly double the NerdQAxe++ (4 chips, 6 TH/s, ~100W) in nearly every metric. If budget allows, the NerdOctaxe Gamma delivers the best hashrate-per-dollar in the OSMU lineup and nearly doubles your solo mining probability. The NerdQAxe++ is the better choice if you want lower power draw, smaller physical size, or plan to start smaller and scale later by adding units.
Can I tune individual chips?
Yes. The NerdOS web dashboard allows per-chip frequency and voltage adjustment across all eight ASICs. This is a significant advantage — you can optimize each chip based on its individual silicon quality, maximizing total hashrate while keeping the weakest chip from dragging down the others. Frequency range: 95–600 MHz per chip.
Can I add an extra fan?
Yes. The board includes three 4-pin fan headers (two with PWM control) and mounting points for an optional 120mm rear fan. In warmer environments or when running at tuned frequencies, the extra fan provides additional airflow to keep temperatures comfortable.
What Bitcoin wallet should I use?
Any on-chain Bitcoin wallet with a native SegWit address (starting with bc1q). Recommended: Sparrow Wallet, Electrum, BlueWallet, or any hardware wallet (Coldcard, Trezor, Ledger). Never use an exchange deposit address — if your NerdOctaxe finds a block, you want those 3.125 BTC in a wallet you fully control.
Can I buy a NerdOctaxe Gamma in Canada?
You are buying from the builders. D-Central Technologies hand-assembles every NerdOctaxe Gamma in our facility in Laval, Quebec. CAD pricing, fast Canadian shipping, bilingual support in English and French, and no cross-border customs or duties. Every unit is burn-tested at full hashrate before shipping. Visit our shop to order.
What if my NerdOctaxe Gamma needs repair?
D-Central’s ASIC repair team is the same team that builds your NerdOctaxe Gamma. They work with BM1370 chips daily, servicing everything from NerdQAxe++ units to full industrial Antminers. With 2,500+ miners repaired since 2016, D-Central offers after-sale support no other OSMU retailer can match. If it breaks, the people who built it will fix it.
Has anyone found a Bitcoin block with an OSMU miner this size?
Yes. On October 27, 2025, a solo miner running six NerdQAxe++ units (combined ~36 TH/s, roughly equivalent to three NerdOctaxe Gammas) found Block #920,440 and earned 3.15 BTC — over $342,000 USD. Multiple OSMU devices have confirmed solo block finds throughout 2025, with combined payouts exceeding $1 million USD. The NerdOctaxe Gamma gives you the strongest solo mining odds of any single open-source device available today.
Built in Canada
Every NerdOctaxe Gamma from D-Central is hand-assembled and tested in Laval, Quebec by our team of ASIC repair technicians. These are the same people who diagnose, desolder, reball, and repair thousands of industrial ASIC miners every year — Antminers, Whatsminers, Avalons. They understand BM1370 chips at the component level because they work with them daily.
Each NerdOctaxe Gamma board is inspected, powered on, and burn-tested at rated hashrate before it ships. All eight ASIC chips must hold stable output. Thermals must be within specification. If a unit does not pass, it does not leave our facility.
Because D-Central is also a full-service ASIC repair shop, your miner is backed by real technical expertise — not a generic help desk. If you ever have a hardware issue, we can diagnose and repair it in-house. That is a support guarantee no other OSMU retailer can match.
D-Central Technologies — Bitcoin Mining Hackers since 2016. We have been building in the OSMU ecosystem since the beginning, pioneering the original Bitaxe Mesh Stand, developing custom heatsinks, and hand-assembling open-source miners for the Canadian and global market. When you buy from D-Central, you are buying from people who eat, sleep, and breathe Bitcoin mining hardware.
Supporting Open-Source Mining
The NerdOctaxe Gamma is open-source hardware designed by the community, for the community. The PCB designs are public. The firmware runs under the GNU General Public License v3.0. Anyone can audit the code, verify the hardware, or build their own. This is how Bitcoin mining hardware should work — transparent and permissionless.
$5–$10 from every OSMU device sale at D-Central goes directly back to the open-source mining community — supporting the developers and designers who make projects like the NerdOctaxe possible.
When you buy a NerdOctaxe Gamma, you are not just buying the most powerful open-source miner on the market. You are funding the future of decentralized mining hardware development. You are voting against closed-source, proprietary firmware that locks you out of your own equipment. You are putting hashrate back in the hands of individuals.
The NerdOctaxe Gamma is part of the OSMU (Open Source Miners United) ecosystem. Explore the full open-source mining lineup and guides at our Bitaxe Hub.
Every hash counts.
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