What Is the Concept of ‘Power Efficiency’ (J/TH) in Mining Hardware Specifications?

Power efficiency, often measured in Joules per Terahash (J/TH), is a critical metric for a miner's profitability. It quantifies how much energy (Joules) the hardware consumes to perform a specific amount of computational work (Terahashes).

A lower J/TH number indicates a more efficient miner, meaning it can generate more hashes for the same amount of electricity, directly lowering the operational cost per coin mined.