4 ms·

I think you're firmly into the realm of diminishing returns by the time you're trying to optimize code that runs on a laptop that has a total power draw of 60is

I think you're firmly into the realm of diminishing returns by the time you're trying to optimize code that runs on a laptop that has a total power draw of 60ish watts. Frankly - Using my kettle to make coffee twice a day (~15 minutes of runtime) is the same as running my laptop at full power draw for 5 hours. Just switching a single lightbulb in your house from standard (~100w) to LED (~20w) more than offsets your whole laptop's power usage, assuming you have lights on while working.

pjc50 5y ago
The laptop power draw is dynamic depending on what you're doing with it, including how heavy the webpages are. But I agree that heating will generally dominate domestic use.
- horsawlarway 5y ago
  Sure, but I'm being exceedingly generous with 60w, assuming a modern device that's about the limit of power consumption. To quote phoronix benchmarks on my machine: Lastly, the battery power consumption varied from about 5 Watts during idling and when the screen was automatically dimmed to as high as 40 Watts under the most grueling benchmarks. On average through under load the power consumption was around 18.1 Watts. https://www.phoronix.com/scan.php?page=article&item=dell-xps-9380&num=8 https://www.phoronix.com/scan.php?page=article&item=dell-xps...
anonymoushn 5y ago
How many laptops does it run on all day, and does anyone run it on desktops instead?
- horsawlarway 5y ago
  Even a desktop only runs about 100w unless you're doing something like gaming. Admittedly, a desktop guarantees you're using another screen, so tack on 60w for the external monitor. You'd still be better off turning off the lights in a single room, in most cases, or simply toggling the AC up literally 1 to 2 degrees.
  - jhgb 5y ago
    If I remember correctly, my desktop runs at ~20W idle (went down to 15W before I added two extra memory modules) and ~70W fully loaded. That's a 50W delta per eight cores, so around 7W per fully loaded core.
jawache 5y ago
If your application is used by 1 million people, does your equation become a lot more interesting?

pjc50 5y ago

The laptop power draw is dynamic depending on what you're doing with it, including how heavy the webpages are. But I agree that heating will generally dominate domestic use.

horsawlarway 5y ago
Sure, but I'm being exceedingly generous with 60w, assuming a modern device that's about the limit of power consumption. To quote phoronix benchmarks on my machine: Lastly, the battery power consumption varied from about 5 Watts during idling and when the screen was automatically dimmed to as high as 40 Watts under the most grueling benchmarks. On average through under load the power consumption was around 18.1 Watts. https://www.phoronix.com/scan.php?page=article&item=dell-xps-9380&num=8 https://www.phoronix.com/scan.php?page=article&item=dell-xps...

anonymoushn 5y ago

How many laptops does it run on all day, and does anyone run it on desktops instead?

horsawlarway 5y ago
Even a desktop only runs about 100w unless you're doing something like gaming. Admittedly, a desktop guarantees you're using another screen, so tack on 60w for the external monitor. You'd still be better off turning off the lights in a single room, in most cases, or simply toggling the AC up literally 1 to 2 degrees.
- jhgb 5y ago
  If I remember correctly, my desktop runs at ~20W idle (went down to 15W before I added two extra memory modules) and ~70W fully loaded. That's a 50W delta per eight cores, so around 7W per fully loaded core.

jawache 5y ago

If your application is used by 1 million people, does your equation become a lot more interesting?