German home-mining supplier Solomining announced its Bitaxe 603 Gamma configuration on October 3, 2026, advertising 1.54 TH/s straight from the factory. The single-chip, open-source Bitcoin miner lists for €219 and combines revised factory settings with larger standard cooling. It is an evolution of the existing Gamma design, not a new mining ASIC architecture.

Key Takeaways

• Solomining advertises 1.54 TH/s at 750 MHz and 1,250 mV, compared with 1.3 TH/s for its previous factory configuration—about 18.5% more hashrate.
• The standard Copperzilla 2.0 cooler is black aluminium; a separate, full-copper option is available.
• The manufacturer retains the BM1370 ASIC, Wi-Fi, AxeOS and a detachable OLED. Whole-device efficiency needs measured power data.

What Changes With the Gamma 603

Solomining says the Germany-assembled 603 uses a factory-new BM1370 from Bitmain’s Antminer S21 Pro family, a 5 V fan and a larger black-aluminium Copperzilla 2.0 heatsink. Factory settings are 750 MHz and 1,250 mV. The supplied adapter is rated 41.6 W (5.2 V / 8 A); that capacity is not a measured operating-power figure. The board offers integrated Wi-Fi, a removable OLED and the open-source AxeOS web dashboard.

Solomining’s original X announcement introduces the black Bitaxe 603 Gamma and its factory hashrate.

Hashrate Is Not the Same as Efficiency

The step from 1.3 to 1.54 TH/s is a claimed 18.5% factory-hashrate increase, but it does not establish improved joules per terahash. The cited 15 J/TH is Bitmain’s BM1370 chip rating, not a verified 603 wall-power benchmark. Determining whole-system J/TH requires measured input watts divided by sustained terahashes per second. For context, BitcoinVersus.Tech previously examined Bitaxe startup efficiency peaks and Naja Duo wall-power testing.

Bitaxe setup video linked by a retailer offering the 603 full-copper edition. This is a setup demonstration, not an independent Gamma 603 power benchmark.

An Open-Source Home Miner

The updated assembly expands a growing category of small miners used for education, pool mining and solo-mining experiments. A single device has extremely low odds of finding a Bitcoin block, but encrypted Stratum V2 support through AxeOS and accessible hardware make hands-on participation more practical. Solomining’s larger copper cooling upgrade is separate, and higher overclocks come with added heat and risk.

A second manufacturer post asks the community for feedback on the Gamma 603’s redesigned appearance.

General Bitaxe Gamma installation walkthrough listed by Bitcoin Brabant; earlier Gamma hardware is shown, not verified 603 benchmark footage.

Readers can compare the seller’s current 603 listing with the open-source Gamma hardware repository. The model number 603 predates this seller’s October product announcement, so the news here is specifically Solomining’s newly announced configuration and availability.

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