Laptop power usage
I just got a digital wattmeter. Had no idea about these until Google PowerMeter, but now, they’re all the rage. Mine’s a pretty simple model and all I plan to do with it is play around with a few household gadgets. My first target, obviously, was my Dell Latitude E5400. The statistics are interesting: Power … when… 0.3W Laptop is switched off. The adapter must be consuming the power 1.3W Laptop is on standby. 12W The lid is closed, and no applications are running. 18.5W The laptop is on, the lid is open, and no applications are running 25W The laptop is writing to the hard disk 34W One CPU is fully utilised 41W Both CPUs are fully utilised Looks like the display and hard disk each consume about 6.5 watts each, while the CPU consumes a whopping 15 + 7 = 22 watts. ...
