Bitaxe SupraHex 702 4.2T Bitcoin Miner

The Bitaxe SupraHex 702 (also referred to as Supra Hex 702 or similar variants like 701/702) is a powerful, open-source home Bitcoin solo miner from the Bitaxe ecosystem, released around April 2025. It’s an upgraded “Hex” design featuring six BM1368 ASIC chips (derived from high-end models like Antminer S21 tech), delivering strong hashrate in a compact, hobbyist-friendly package. This makes it one of the most capable open-source Bitcoin miners available for enthusiasts, emphasizing solo “lottery” mining (chance to win full blocks of ~3.125 BTC + fees) while being efficient and customizable.

Here are clear product views of the Bitaxe SupraHex 702, showcasing its compact black/orange chassis, powerful heatsink, single fan, and modular open-source build:

Additional angles, including side views with the heatsink/fan setup, orange stand variants, and powered-on examples:

Key Specifications

• Hashrate: 3.5–4.2 TH/s (terahashes per second; typically stabilizes at ~4.2 TH/s with stock settings or slight overclock)
• Power Consumption: 75–90W (around 80–90W typical; tunable via firmware for efficiency)
• Efficiency: ~21 J/TH (strong for open-source/home class, some reports of ~14–22 J/TH depending on tuning)
• Algorithm: SHA-256 (Bitcoin, plus BCH/BSV compatibility)
• Cooling: Air-cooled (single efficient fan + large heatsink; keeps ASICs ~35°C, regulators ~60°C at full speed)
• Noise Level: ~35–48 dB (relatively quiet for its power; quieter than many industrial units, suitable for home/garage)
• Dimensions: Compact (~240 × 210 × 100 mm or similar; lightweight ~0.4–2 kg depending on stand/accessories)
• Connectivity: Built-in 2.4GHz Wi-Fi (plug-and-play setup; web interface or AxeOS firmware)
• Other Features: Fully open-source (customizable firmware like AxeOS); supports solo mining (lottery odds) or pools; small display for stats in some bundles; beginner-friendly with overclock potential; includes PSU in most kits

Here are more detailed shots highlighting the six-chip board, heatsink design, and colorful stand options (black/orange):

Features and Use Case

This miner is a community-driven upgrade (often modded by TinyChipHub or similar), building on earlier Bitaxe models like Gamma (single-chip) for much higher output. It’s ideal for home use in places like Loughborough, UK — runs on standard outlets, low power draw means minimal electricity impact (~£3–£5/month at ~0.25–0.30 GBP/kWh UK rates as of January 2026), and generates mild warmth (great as a small heater in winter). Setup is simple: Wi-Fi connect, configure via browser, monitor hashrate/temp. Open-source nature allows tinkering (e.g., overclock to push beyond 4.2 TH/s, firmware flashes). Users praise its reliability, cool temps, and value for solo mining fun/decentralization — though pool mining yields tiny fractions daily.

Compared to similar home Bitcoin miners:

• Vs. Canaan Avalon Nano 3S (~6 TH/s at 140W): Slightly lower hashrate but more efficient/quieter.
• Vs. NerdQaxe+ Hydro (~4.8 TH/s hydro-cooled): Similar performance but air-cooled here (no liquid hassle).
• Vs. Avalon Q (90 TH/s): Much lower power/noise for hobby scale.

Profitability and Pricing

At ~90W, running costs are low (~$10–15/month USD equivalent in moderate power areas). Pool earnings are small (cents/day at current BTC ~$90k–$100k prices, high difficulty), but solo is pure lottery thrill. It’s about education, fun, and supporting Bitcoin’s decentralization — not serious profit.

Pricing: Typically $250–$400 USD (e.g., ~$249–$300 on sites like NHASH, WOYOU, AliExpress/eBay; higher ~$399 on Amazon with bundles). Widely available in 2026 from resellers (Zeus Mining, CryptoMinerBros, eBay, etc.), often with free shipping and PSU included. Stock varies with batches.

If you’re eyeing this for home solo mining in Loughborough (current date January 19, 2026), it’s a solid, efficient pick! Let me know if you want setup guides, overclock tips, exact profitability calcs (with your power rate/BTC price), or comparisons to other Bitaxe/NerdMiner models.