This doesn't say how much less power. Is it significant? iOS also doesn't have a VM but that doesn't make it easier on the battery vs Android, so why would that be the reason for Ubuntu? Perhaps Ubuntu just doesn't have a lot of services running in the background currently?
While true, that's like saying i++ is more efficient than i = i + 1 in an application that makes several SQL queries per run.
You can micro optimize areas of code for better CPU (and thus battery) efficiency, but the largest use of power in a phone is the cellular radio, WiFi, bluetooth, screen, digitizer, and other bits of hardware. The CPU makes a difference, but most likely not in a noticeable way
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[ 3.6 ms ] story [ 27.4 ms ] threadYou can micro optimize areas of code for better CPU (and thus battery) efficiency, but the largest use of power in a phone is the cellular radio, WiFi, bluetooth, screen, digitizer, and other bits of hardware. The CPU makes a difference, but most likely not in a noticeable way
How is this Hacker News worthy?