3 ms·
In a laptop's energy budget, power spent driving the loudspeakers is probably one of the last concerns. If you integrate the actual power consumed over the pla
by bob1029 4y ago
In a laptop's energy budget, power spent driving the loudspeakers is probably one of the last concerns.
If you integrate the actual power consumed over the playback duration of typical program material, you would find figures that are essentially irrelevant compared to the cost of running the backlight or WiFi radios.
- dzhiurgis 4y agoScreenshot says 1W or so. My laptop uses about 10W on light scrolling.
- pjc50 4y agoI saw a nice demo recently of the use of chargepump power control to stop the backlight dimming if the audio got too loud, a microcosm of the "PA so loud your lights dim" situation. (no, I've not been able to find it to show hn)
- kkielhofner 4y agoWhile you're probably right technically speaking laptops compete heavily on battery life. I wouldn't be surprised at all if (like mobile devices) they're at the point of optimizing relatively minuscule points of power draw. Like most things once you start looking at dozens of factors that are 0.5% wins each you end up with a substantial improvement that in the case of battery powered productivity devices is significant from a sales standpoint.