The NerdQaxe+

Description

Why the NerdQAxe+ — The Quietest Quad-Chip Open Source Bitcoin Solo Miner

The NerdQAxe+ takes the quad-chip architecture that the original NerdQAxe pioneered and upgrades it with BM1368 chips — the same ASIC silicon that powers the Antminer S21. The result is a quieter, more efficient quad-chip solo miner that delivers 2.4–2.5 TH/s at just 50–55W, with a best-in-class efficiency of ~20 J/TH.

• Four BM1368 chips, S21-generation efficiency — each chip is a direct descendant of the silicon in Bitmain’s Antminer S21, one of the most efficient industrial miners ever built. The NerdQAxe+ puts that efficiency on your desk.
• Whisper-quiet operation — rated at less than 25 dBA in quiet mode, the NerdQAxe+ is the quietest quad-chip miner in the OSMU lineup. Run it in your bedroom, office, or living room without anyone noticing.
• CE certified — this is not a prototype or a dev board. The NerdQAxe+ has passed CE certification (Bitronics), making it a legitimate commercial product with verified electromagnetic compatibility and safety standards.
• New thermal design — a precision-machined aluminum heatsink paired with an 80mm ThermalRight fan and a new buck converter that reduces operating temperatures by 10+ degrees Celsius compared to the original NerdQAxe.
• Plug-and-play with full dashboard — the 1.9″ color LCD and browser-based AxeOS interface give you real-time visibility into hashrate, chip temperatures, power draw, uptime, and Bitcoin network stats. Set up in under 5 minutes via Wi-Fi.

The NerdQAxe+ sits in the sweet spot of the OSMU lineup: more hashrate and better efficiency than single-chip miners, quieter and more affordable than the NerdQAxe++ or NerdOctaxe. For home miners who want meaningful quad-chip hashrate without the noise, heat, or power draw of higher-tier devices, this is the one. D-Central Technologies has been in the OSMU ecosystem since the early days — we created the original Bitaxe Mesh Stand, developed custom heatsinks for the Bitaxe and Hex, and have shipped thousands of open-source miners from our facility in Laval, Quebec. Every NerdQAxe+ is inspected and tested by our ASIC repair technicians before it leaves our shop. $5–$10 from every sale goes directly to OSMU development.

Technical Specifications

Specification	Value
ASIC Chip	Bitmain BM1368 (Antminer S21 generation)
Chip Count	4
Algorithm	SHA-256
Hashrate (Stock)	2.4–2.5 TH/s
Hashrate (Overclocked)	Up to ~3.0 TH/s
Power Consumption	50–55W at stock settings
Idle Power	<3W
Efficiency	~20 J/TH (stock), ~17.5 J/TH (tuned)
Power Input	12V DC, barrel jack (8A power adapter)
Recommended PSU	12V / 10A, 120W (UL-certified)
Connectivity	Wi-Fi 802.11 b/g/n, 2.4 GHz (ESP32-S3)
Display	LILYGO T-Display S3 (1.9″ color LCD, removable)
Firmware	AxeOS (ESP-Miner fork), open-source, OTA-updatable
Cooling	Precision-machined aluminum heatsink + 80mm ThermalRight fan
Noise Level	<25 dBA (quiet mode), ~40 dB (normal)
Weight	~270g (~0.6 lbs)
CE Certified	Yes (Bitronics)
Open Source	Yes — GitHub: shufps/qaxe (revision 5.0)
Monthly Electricity Cost	~$4.80/month at $0.12/kWh

What’s in the Box

• Fully assembled NerdQAxe+ with 4x BM1368 ASIC chips
• LILYGO T-Display S3 color screen (removable)
• Precision-machined aluminum heatsink (pre-installed)
• 80mm ThermalRight cooling fan (pre-installed)
• AxeOS firmware pre-loaded and ready to mine

You will also need: A 12V DC power supply (10A / 120W recommended) — available separately in our shop. The NerdQAxe+ uses a standard barrel jack connector.

Quick Setup

1. Power on — Connect the 12V power supply. The NerdQAxe+ boots up in seconds and creates its own Wi-Fi hotspot. The SSID appears on the color LCD screen.
2. Connect and configure — Join the hotspot from your phone or computer. Your browser opens the AxeOS setup portal automatically. Enter your home Wi-Fi credentials, your Bitcoin wallet address, and your solo mining pool (e.g., solo.ckpool.org or web.public-pool.io).
3. Start mining — Save settings and the NerdQAxe+ connects to your network. All four BM1368 chips spin up and begin hashing. The LCD and web dashboard show real-time hashrate, chip temperatures, shares submitted, and Bitcoin network stats.
4. Tune it your way — Use the AxeOS web portal to adjust ASIC frequencies and voltages. Push toward 3 TH/s with overclocking, or dial it back for ultra-quiet operation. Over-temperature security controls keep the hardware safe regardless of your settings.

The OSMU Lineup — Find Your Miner

D-Central carries the complete open-source mining ecosystem — from your first educational miner to a serious multi-chip solo rig. The NerdQAxe+ hits the quad-chip sweet spot: four chips, quiet enough for any room, efficient enough for 24/7 operation.

Device	Hashrate	Power	Price
NerdMiner	~78 KH/s	~1W	$49.99
NerdNOS	80–130 GH/s	7–8W	$139.99
NerdAxe	~500 GH/s	~12W	$189.99
Bitaxe	625 GH/s – 1.2 TH/s	12–21W	$189.99
Minibit	~2 TH/s	~21W+	$229.99
NerdQAxe	1.7–2.4 TH/s	~55W	Clearance
NerdQAxe+	2.4–2.5 TH/s	50–55W	From $299.99
Bitaxe GT	2.15 TH/s	35–43W	From $299.99
Bitaxe Hex	3+ TH/s	~60W	$499.99
NerdQAxe++	4.8–6 TH/s	70–100W	Unreleased
NerdOctaxe Gamma	9.6–12 TH/s	160–200W	Unreleased

All prices in CAD. Visit the Bitaxe Hub for deep-dive guides, comparisons, and setup tutorials across the full OSMU lineup.

Your Next Step — Accessories and Upgrades

Want more hashrate? The Bitaxe Hex ($499.99) delivers 3+ TH/s from six chips. For maximum open-source hashrate, the NerdQAxe++ pushes 6 TH/s from four BM1370 chips — the most popular multi-chip OSMU miner. Complete your NerdQAxe+ setup with a NerdQAxe Modern Stand. Need it repaired? D-Central’s ASIC repair team has fixed 2,500+ miners — we support what we sell.

Frequently Asked Questions

What is the NerdQAxe+?

The NerdQAxe+ is a quad-chip open-source Bitcoin solo miner using four Bitmain BM1368 ASIC chips — the same generation of silicon found in the Antminer S21. It delivers 2.4–2.5 TH/s at stock settings while consuming just 50–55W. It is CE certified, runs the open-source AxeOS firmware, and features a 1.9″ color LCD for real-time mining stats. The NerdQAxe+ is the efficiency-optimized evolution of the original NerdQAxe.

How does the NerdQAxe+ compare to the original NerdQAxe?

The NerdQAxe+ is a significant upgrade across the board. It uses BM1368 chips (S21 generation) instead of the original’s BM1366 chips (S19 XP generation), delivering better efficiency (~20 J/TH vs ~23–32 J/TH), similar or higher hashrate (2.4–2.5 TH/s vs 1.7–2.4 TH/s), quieter operation (<25 dBA vs ~40 dB), and lower operating temperatures thanks to a redesigned buck converter. The NerdQAxe+ also carries CE certification.

What are my chances of finding a Bitcoin block?

At 2.5 TH/s against the current network hashrate (~800+ EH/s), your daily probability of finding a block is approximately 1 in 1.4 million. Over a full year of 24/7 mining, your cumulative probability is roughly 0.026%. The odds are long — but every hash is an independent roll of the dice, and the prize is a full 3.125 BTC block reward (~$300,000+ CAD). The NerdQAxe+ is a lottery ticket that costs under $5/month in electricity.

How loud is the NerdQAxe+?

The NerdQAxe+ is the quietest quad-chip miner in the OSMU lineup. In quiet mode, it operates at less than 25 dBA — quieter than a whisper. In normal operation, fan noise is approximately 40 dB, comparable to a quiet desktop computer. The 80mm ThermalRight fan and precision heatsink keep temperatures low without needing aggressive fan speeds. You can run this on your nightstand.

What power supply do I need?

The NerdQAxe+ requires a 12V DC power supply with a barrel jack connector. A 10A (120W) UL-certified adapter is recommended for reliable operation, especially if you plan to overclock. Never use a 5V Bitaxe power supply — the NerdQAxe+ runs on 12V. We carry compatible power supplies in our accessories shop.

Can I overclock the NerdQAxe+?

Yes. The AxeOS web interface allows you to adjust ASIC frequencies and core voltages. Users have pushed the NerdQAxe+ to approximately 3.0 TH/s with proper cooling and a robust power supply. Increase frequency in small steps and monitor temperatures — the over-temperature protection will throttle automatically if things get too hot. The improved thermal design of the NerdQAxe+ gives you more overclocking headroom than the original.

NerdQAxe+ vs Bitaxe GT — which should I buy?

Both deliver roughly 2.1–2.5 TH/s, but they take different approaches. The NerdQAxe+ uses 4x BM1368 chips, is quieter (<25 dBA vs ~35 dB), lighter (270g vs heavier), and has a larger color LCD display. The Bitaxe GT uses 2x BM1370 chips on a compact 120x60mm PCB, is more power-efficient (~18 J/TH vs ~20 J/TH), and uses a 6-layer board for better thermal performance. Choose the NerdQAxe+ for quieter operation and the Nerd-series ecosystem. Choose the Bitaxe GT for maximum efficiency and the smallest form factor. D-Central carries both.

Which mining pool should I use?

For solo mining (recommended), the top choices are Solo CKPool (solo.ckpool.org) — 2% fee, battle-tested infrastructure, multiple confirmed block finds — and Public Pool (web.public-pool.io) — no fees, community-driven, self-hostable. For pooled mining with regular small payouts, Ocean and Braiins are reliable options. At 2.5 TH/s, solo mining is the primary use case — you are hunting for the full 3.125 BTC block reward.

How do I update the firmware?

Open the AxeOS dashboard in your browser (enter the NerdQAxe+ IP address from your router or the LCD screen), navigate to Settings, and upload the latest firmware file. The update takes about 60 seconds. OTA (over-the-air) updates are fully supported — no physical access required. Always use firmware from the official GitHub repository.

Does D-Central offer support and warranty?

Yes. Every NerdQAxe+ sold by D-Central is tested and inspected by our ASIC repair technicians in Laval, Quebec before shipping. D-Central is one of North America’s leading ASIC repair facilities — if your miner needs service, our team has the expertise to diagnose and fix it. We support what we sell, in English and French. Learn about our repair services.

Can I buy a NerdQAxe+ in Canada?

Yes. D-Central Technologies is based in Laval, Quebec and ships the NerdQAxe+ across Canada with fast domestic shipping, CAD pricing, and bilingual support in English and French. No cross-border customs or duties. Every unit is inspected and tested by our ASIC repair technicians before shipping. Visit our shop to order.

What if my NerdQAxe+ needs repair?

D-Central’s ASIC repair team has serviced 2,500+ mining machines since 2016. We work with BM1368 chips daily in our ASIC repair facility. If your NerdQAxe+ develops any issue, our technicians in Laval, Quebec can diagnose and repair it in-house. That is a support guarantee no other OSMU retailer can match.

Supporting Open-Source Mining

The NerdQAxe+ is built on open-source hardware and software under the OSMU (Open Source Miners United) initiative. Every design file, schematic, and line of firmware code is publicly available. No black boxes, no proprietary lock-in — you own the hardware and the knowledge behind it. $5–$10 from every NerdQAxe+ sold by D-Central goes directly to the OSMU development fund. This money supports the engineers and designers building the next generation of open-source mining hardware — from the NerdQAxe++ to devices that do not exist yet. When you buy from D-Central, you are directly funding the decentralization of Bitcoin mining at the silicon level. Licensed under open-source terms. Full source code and hardware designs: github.com/shufps/qaxe Every hash counts.