What is Profit per Watt for ASIC miners?
Profit per Watt (also called mining profit per watt) is net daily mining profit in USD divided by the ASIC's power draw in watts - reported as USD/W/day. It answers the question every power-constrained miner asks: which machine earns the most from each watt on my circuit?
Most farms and home setups are limited by electrical capacity - a residential panel, a garage breaker, or a fixed megawatt allocation - not by how many boxes they can stack. Ranking by raw hashrate or sticker daily profit can favor a hungry machine that burns through your budget. Ranking by Profit per Watt surfaces the hardware that turns a fixed power budget into the highest return at your electricity rate.
Profit per Watt vs J/TH efficiency
Manufacturer efficiency (J/TH or J/GH) measures hashes per joule. That matters for hardware generation, but it ignores coin price, network difficulty, and your USD/kWh rate. Profit per Watt folds those live economics in, so two ASICs with similar J/TH can rank very differently once electricity cost and market conditions are applied.
CoinWarz uses Profit per Watt as the headline sort on every miner profitability ranking and in the Monero mining calculator.