4 ms·

The M1 Air has a ~50 Wh battery, ~2 % over ~six hours is ~0.15 W total system power. For comparison, I'm getting ~0.9 W total system power under similar conditi

The M1 Air has a ~50 Wh battery, ~2 % over ~six hours is ~0.15 W total system power. For comparison, I'm getting ~0.9 W total system power under similar conditions on a five year old laptop (i5-7200U, 16 GB non-LP DDR4, no memory DVFS, MX500 SATA SSD, 1080p IPS screen). But you'll likely find that the screen/display system is the biggest power hog in light use. For the laptop above just turning the screen on at a low brightness requires around 1.3 W (for a total system power of around 2.2-2.3 W).

masklinn 5y ago
FWIW that's the project lead for Asahi Linux (the effort to build a distro working perfectly on M1), I expect they know what you're talking about already :)
olliej 5y ago
Interestingly if you can't use low power DDR then DRAM refresh becomes one of the biggest power eaters