The NerdQAxe++ has undergone a significant upgrade, transitioning from a 4-layer to a 6-layer printed circuit board (PCB).

All photos belong to Thomas Shufps

This enhancement has resulted in a stable hashrate of approximately 4.8 terahashes per second (TH/s) while maintaining power consumption around 76 watts, equating to an efficiency of about 15.8 joules per terahash (J/TH).

The improved design also allows for the use of a smaller cooling system, effectively maintaining the board’s temperature at 55°C, a notable improvement from the previous 63°C with a larger cooler.

In comparative tests, the same smaller cooler was applied to the earlier 4-layer PCB design. The firmware initiated a shutdown when temperatures reached 70°C, indicating that the previous design was less efficient in heat management.

The transition to a 6-layer PCB has not only enhanced performance metrics but also improved thermal regulation, underscoring the importance of PCB architecture in optimizing the efficiency and reliability of mining hardware.

The Bitaxe miner’s achievement of over 4.8TH/s represents a significant advancement in the realm of compact, open-source Bitcoin mining solutions.

This development highlights the potential for small-scale miners to achieve higher performance levels through thoughtful design enhancements, contributing to the broader accessibility and decentralization of Bitcoin mining.

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