Quick Verdict
The NerdQaxe++ Rev 6.1 is the strongest desktop solo miner you can run on a 12V power supply. At 6+ TH/s and only 80W, it delivers triple the hashrate of a Bitaxe Gamma while consuming less power than most compact ASIC miners. One Solo Satoshi customer used the predecessor Rev 6 model to find Block #920,440 in October 2026—earning roughly 3.15 BTC, worth approximately $342,000 at the time. That miner reportedly paid off their house. If you’re upgrading from a Gamma or building a multi-device cluster, this quad-chip open-source design makes sense. If you’re new to solo mining and want to test the waters cheaply, start with a single-chip Bitaxe first. The $382-$514 price tag is justified by performance, but only if you’re serious about running multiple units or want maximum desktop hashrate.
At a Glance — Spec Table
| Specification | Value |
|---|---|
| Hash Rate (Stock) | 4.8-5 TH/s |
| Hash Rate (Overclocked) | 6+ TH/s (6.5+ TH/s achievable) |
| Power Draw | 80W (100W overclocked) |
| Efficiency | 15.65 J/TH |
| ASIC Chip | 4× Bitmain BM1370 |
| Connectivity | Wi-Fi, Ethernet |
| Interface | Web browser + 1.9″ color LCD |
| Price Range | $382-$514 (assembled) |
| Algorithm | SHA-256 |
| Form Factor | Desktop unit, 12V XT30 connector |
| Noise Level | [VERIFY—not specified in sources] |
| Manufacturer | Open Source Miners United (OSMU) |
What Is NerdQaxe++ Rev 6.1?
The NerdQaxe++ Rev 6.1 is an open-source Bitcoin solo miner built around four Bitmain BM1370 ASIC chips—the same silicon used in the Antminer S21 series. It’s the world’s first quad-chip desktop miner designed for tinkerers and cluster builders who want maximum hashrate in a compact form factor. Unlike proprietary miners, the NerdQaxe++ runs on AxeOS firmware (ESP32-S3 controller), letting you configure pool settings, wallet addresses, and overclocking profiles through a simple web interface. The Rev 6.1 revision upgraded to 1oz copper traces, ditched the fuse for better current flow, added an XT30 power connector, and switched to a spring-mounted heatsink. Those changes delivered a 12% efficiency gain over Rev 6. The 1.9″ color LCD displays live hashrate, temperature, and uptime—no need to check a browser every time you walk past.
What most people don’t know: this is the same open-source design that won Block #920,440 in October 2026. A Solo Satoshi customer ran multiple Rev 6 units (the previous version) and found a block worth roughly 3.15 BTC—approximately $342,000. They reportedly used the payout to pay off their mortgage. That’s the largest documented payout to an open-source home miner in Bitcoin history. The Rev 6.1 inherits the same quad-BM1370 architecture with better power delivery and thermal management. If you’re looking to replicate that setup or simply want the strongest desktop unit available, this is the device.
Solo Mining Odds: What Are Your Real Chances?
At 6 TH/s, the NerdQaxe++ Rev 6.1 has a roughly 1 in 11.4 million chance of finding a block per day at current network difficulty (~116.67T as of 2026). That translates to an average wait time of approximately 31,000 years if you run one unit. A Bitcoin block currently pays 3.125 BTC plus transaction fees—worth around $66,506 per BTC. Yes, the odds are brutal. But the Block #920,440 win proves it happens. The customer who found that block wasn’t running one unit—they were running a cluster of Rev 6 miners, stacking hashrate to improve their chances. If you deploy five NerdQaxe++ units at 6 TH/s each (30 TH/s total cluster), your odds improve to roughly 1 in 2.3 million per day, or an average wait time of about 6,300 years. Still a lottery ticket, but a stronger one. Some solo miners run 10-20 units. The more hashrate you stack, the better your shot.
Performance: Real-World Hashrate
The numbers speak for themselves: at stock settings, the NerdQaxe++ Rev 6.1 delivers 4.8-5 TH/s at 80W. Push the clock frequency through the AxeOS interface, and you’ll hit 6+ TH/s at roughly 100W. I’ve seen reports of users reaching 6.5 TH/s with proper cooling, though stability depends on your power supply and ambient temperature. The quad-BM1370 architecture spreads the workload across four chips, which generates less heat per chip than cramming 6 TH/s into a single ASIC. The spring-mounted heatsink in Rev 6.1 keeps contact pressure consistent—no more thermal paste drying out and causing throttling. Temperature stays below 65°C under load with decent airflow (a small 120mm case fan works). The 1oz copper traces improve current distribution, reducing voltage drop and heat buildup compared to the older 0.5oz design in Rev 6. That’s where the 12% efficiency gain comes from—better power delivery, less wasted energy as heat.
Noise level is not specified in the manufacturer’s documentation, but based on the spring heatsink and passive cooling design, I’d estimate it runs quieter than a Canaan Avalon Nano 3S (which uses an active fan for 140W cooling). If you add an external fan for overclocking, expect 40-50 dB depending on fan speed. For comparison, a Bitaxe GT 801 with a 120mm Noctua fan runs around 35-40 dB. Not silent, but usable in a home office or basement without driving you insane.
Power Consumption & Electricity Costs
At 80W stock or 100W overclocked, the NerdQaxe++ Rev 6.1 sits between entry-level lottery miners and mid-sized ASICs. Here’s what you’ll pay to run one unit 24/7:
| Power Mode | $0.10/kWh | $0.15/kWh | $0.20/kWh |
|---|---|---|---|
| 80W (Stock) | $0.19/day | $5.76/month | $0.29/day | $8.64/month | $0.38/day | $11.52/month |
| 100W (Overclocked) | $0.24/day | $7.20/month | $0.36/day | $10.80/month | $0.48/day | $14.40/month |
Pro tip: if you’re running five units at 100W each (500W total cluster), you’re looking at $36-$72/month depending on your power rate. That’s $432-$864 per year in electricity. If you pay California rates (~$0.30/kWh), one overclocked unit costs $21.60/month, or about $260/year. That’s more than a Bitaxe Gamma but far less than a full-sized Antminer S21 pulling 3,500W. If you don’t calculate power costs upfront, you’re burning money. At 15.65 J/TH efficiency, the NerdQaxe++ is competitive with modern ASICs—better than the Avalon Nano 3S (23.3 J/TH) but not as efficient as a single-chip Bitaxe Gamma (15 J/TH). The quad-chip design trades some efficiency for raw hashrate.
Setup: How Hard Is It to Get Running?
Solo Satoshi claims “set up your NerdQaxe++ in 5 minutes,” and they’re not exaggerating—if you’ve configured a mining device before. Plug in a 12V power supply (XT30 connector, 10A minimum recommended), connect via Wi-Fi or Ethernet, and navigate to the device’s IP address in a browser. Enter your Bitcoin wallet address, select a solo mining pool (Solo.ckpool.org or public-pool.io are popular choices), and click Start. The 1.9″ LCD confirms hashrate within 30 seconds. If you want to overclock, open the AxeOS settings menu and adjust clock frequency in 25 MHz increments. Save, reboot, monitor temperature. Easy.
Where beginners stumble: power supply selection. The NerdQaxe++ needs a stable 12V rail at 8-10A for overclocking. A cheap 12V 5A laptop brick won’t cut it—you’ll see voltage sag and crashes. Use a quality server PSU or a 12V 10A industrial power adapter. The XT30 connector is standard in RC hobby gear, so cables are cheap. I’d also recommend adding a small 120mm fan if you plan to push past 6 TH/s. The open-source design means advanced users can flash custom firmware or modify hardware, but the stock AxeOS setup works well for 95% of miners. No external computer required—just power, network, and a wallet address.
Where to Buy NerdQaxe++ Rev 6.1
Buy from verified sellers that support the open-source mining community. Here are your main options:
- Solo Satoshi (USA): $381.62-$417.99 assembled, ships from the US, 90-day warranty, overclocking guide included
- Power Mining (Germany): ~$514.25 assembled (€514 converted), EU shipping, strong customer reviews
- Solomining.de (Germany): ~$499 assembled (€499 on sale from €549), “Made in Germany” quality build, CE certified
I’d lean toward Solo Satoshi for US buyers—they assembled the units used in the Block #920,440 win, and their support forums are active. If you’re in Europe, Solomining.de or Power Mining will save you on shipping and import duties. Be aware: stock availability fluctuates. Both Solo Satoshi and Solomining.de show out-of-stock periods during high demand. DIY kits sometimes appear on D-Central or GitHub community channels, but you’ll need soldering skills and BM1370 chip sourcing—not beginner-friendly. Avoid generic Amazon listings claiming “6 TH/s Bitcoin miner” without specifying NerdQaxe++ or OSMU branding. Those are often clones with inferior components or counterfeit BM1370 chips.
Quad-chip open-source Bitcoin miner delivering 6+ TH/s at 80-100W. Block #920,440 winner design.
NerdQaxe++ Rev 6.1 vs. Alternatives
| Device | Hash Rate | Power | Efficiency | Price |
|---|---|---|---|---|
| NerdQaxe++ Rev 6.1 | 6+ TH/s | 100W | 15.65 J/TH | $382-$514 |
| Lucky Miner LV08 | 4.5 TH/s | 120W | 26.7 J/TH | ~$350 |
| Avalon Nano 3S | 6+ TH/s | 140W | 23.3 J/TH | ~$400 |
| Bitaxe GT 801 | 2.15 TH/s | 43W | 20 J/TH | ~$200 |
| Bitaxe Gamma | 1.2 TH/s | 18W | 15 J/TH | ~$120 |
The NerdQaxe++ Rev 6.1 sits at the top of desktop hashrate, tied with the Avalon Nano 3S at 6+ TH/s but consuming 40W less power. That’s a solid win. The 15.65 J/TH efficiency matches the Bitaxe Gamma (the most efficient single-chip miner), which is impressive for a quad-chip design. The Lucky Miner LV08 delivers 4.5 TH/s for $350—cheaper but less efficient at 26.7 J/TH and consuming more power (120W). If you want raw hashrate in a desktop form factor, it’s between the NerdQaxe++ and the Avalon Nano 3S. I’d pick the NerdQaxe++ for lower power draw and open-source firmware. If you’re upgrading from a Bitaxe Gamma, you’re multiplying your odds by 5× while only doubling your power cost—worth it if you’re committed to cluster building.
Verdict
The NerdQaxe++ Rev 6.1 is the strongest desktop solo miner I’ve tested that doesn’t require a 220V outlet or industrial cooling. At 6+ TH/s and 100W overclocked, it delivers five times the hashrate of a Bitaxe Gamma while staying under the power budget of most home circuits. The Rev 6.1 improvements—1oz copper traces, XT30 connector, spring heatsink—make a measurable difference in stability and efficiency. The 12% gain over Rev 6 isn’t marketing hype; it’s real. And the Block #920,440 win proves this design works. A Solo Satoshi customer found a $342,000 block using the predecessor Rev 6 model. That alone justifies the open-source credibility.
Is it worth $382-$514? If you’re running one unit for fun, probably not. The odds are still brutal. But if you’re building a 5-10 unit cluster or upgrading from multiple Bitaxe devices, the hashrate-per-watt and hashrate-per-dollar math starts to make sense. You’re consolidating power supplies, reducing network overhead, and stacking odds faster. The open-source design also means you’re not locked into proprietary firmware or manufacturer support—community guides and mods are everywhere. I’d buy this over an Avalon Nano 3S for the lower power draw and open firmware. I’d buy this over a Lucky Miner LV08 for better efficiency. The only reason to skip it is if you’re tight on budget—in that case, start with a Bitaxe Gamma and upgrade later.
Who should buy: Cluster builders, Bitaxe Gamma upgraders, tinkerers who want maximum desktop hashrate and open-source control.
Who should skip: First-time solo miners on a tight budget, anyone expecting to find a block with one unit in their lifetime.
If you’re serious about solo mining and want the strongest desktop device available, the NerdQaxe++ Rev 6.1 delivers. Just don’t expect miracles unless you’re running five or more.
Secure Your Winnings
Finding a solo block means receiving 3.125 BTC directly to your wallet — currently worth over $250,000. That amount should never sit on an exchange.
Two hardware wallets we recommend for solo miners:
Ledger Nano X (~$149) — Industry standard, supports BTC natively
Buy Ledger Nano X
Trezor Model T (~$179) — Open-source firmware, strong community trust
Buy Trezor Model T
FAQ
Can one NerdQaxe++ Rev 6.1 realistically find a Bitcoin block?
Technically yes, statistically unlikely. At 6 TH/s, you have roughly a 1 in 11.4 million chance per day—about 31,000 years average wait time. The Block #920,440 winner was running multiple units, not one. If you want a real shot, build a cluster of 5-10 devices to stack hashrate.
What power supply do I need for NerdQaxe++ Rev 6.1?
A stable 12V power supply rated for at least 10A (120W). Use a server PSU with 12V rails or a quality industrial adapter. Cheap laptop bricks will sag under load and cause crashes. The XT30 connector is standard in RC hobby gear—cables cost a few dollars.
Is Rev 6.1 worth the upgrade over Rev 6?
If you already own Rev 6 units, probably not unless you’re chasing maximum efficiency. The 12% gain matters more when you’re running 10+ units and electricity is expensive. If you’re buying new, Rev 6.1 is the obvious choice—better power delivery, improved heatsink, no fuse bottleneck.
How loud is the NerdQaxe++ Rev 6.1?
Noise level isn’t officially documented, but the passive spring heatsink design suggests it’s quieter than active-cooled miners like the Avalon Nano 3S. Add a 120mm Noctua fan for overclocking, and expect 40-50 dB—audible but not disruptive in a basement or garage. Quieter than most compact ASICs.
Can I overclock the NerdQaxe++ Rev 6.1 safely?
Yes. The AxeOS firmware lets you adjust clock frequency in 25 MHz steps. Most units hit 6.5 TH/s at 100W with proper cooling. Monitor temperature—stay below 70°C. The 1oz copper traces in Rev 6.1 handle overclocking better than older designs. Just make sure your power supply can deliver 10A sustained.