It looks like Apple’s constant effort towards greener computing is paying dividends as sust-it, the website which provides rankings of energy usage and annual energy cost for thousands of devices, has announced that Apple’s Mac mini bags the top 4 spots for most efficient desktop computer in the latest listing. Said Mac only consumes .94W when turned off, 1.71W in sleep mode and 12.6W when turned on and left in idle mode. While not everybody will care too much about green computing, it’s still good to see Apple focusing on it.