The comparison for the use of 'efficient' is watt and performance to watt. The initial cost is probably double for the Mac Studio, locking in a whole lot of MWh

The comparison for the use of 'efficient' is watt and performance to watt. The initial cost is probably double for the Mac Studio, locking in a whole lot of MWh. I see a something like a 60 W difference in average power consumption. So about 15 hours per KWh saved (€ 0,25 per KWh). Say a € 1000 price difference is 60.000 hours of usage. That's nearly 7 years continuous use, or 1500 office weeks or 30 office years. I hope the future is ARM though. But for general computing, not Apple-specific. Tiny, embedded, silent computers with a low power draw, perhaps with some on the fly computing in the cloud for specific purposes like gaming.