4 ms·

BTW I get 19 hours from DELL XPS and Latitude. It's Linux with custom DE and Vim as IDE though.

by bvrmn 2y ago

amarka 2y ago
I get about 21 hours from mine, it's running Windows but powered off.
bee_rider 2y ago
This is why Apple can be slightly more honest about their battery specs, they don’t have the OS working against them. Unfortunately most DELLs XPS will be running Windows, so it is still misleading to provide specs based on what the hardware could do if not sabotaged.
- hinkley 2y ago
  I wonder if it’s like webpages. The numbers are calculated before marketing adds the crapware and ruins all of your hard work.
wklm 2y ago
can you share more details about your setup?
- bvrmn 2y ago
  Archlinux, mitigations (spectre alike) off, X11, OpenBox, bmpanel with only CPU/IO indicator. Light theme everywhere. Opera in power save mode. `powertop --auto-tune` and `echo 1 | sudo tee /sys/devices/system/cpu/intel_pstate/no_turbo` Current laptop is Latitude 7390.
  - ribit 2y ago
    Right, so you are disabling all performance features and effectively turning your CPU into a low–end low–power SKU. Of course you’d get better battery life. It’s not the same thing though.
  - Sohcahtoa82 2y ago
    > echo 1 | sudo tee /sys/devices/system/cpu/intel_pstate/no_turbo Isn't that going to torch performance? My i9-9900 has a base frequency of 3.6 Ghz and a turbo of 5.0 Ghz. Disabling the turbo would create a 28% drop in performance. I suppose if everything else on the system is configured to use as little power as possible, then it won't even be noticed. But seeing as CPUs underclock when idle (I've seen my i9 go as low as 1.2 Ghz), I'm not sure disabling turbo makes a significant impact except when your CPU is being pegged.
    - bvrmn 2y ago
      That's the point. I have no performance bottleneck with no_turbo. My i5 tends to turn on turbo mode and increased power demand (heat leaks) even if it's no needed. For example with no_turbo laptop is always cold and fan basically stays silent. With turbo it easily gets 40C warm while watching YT or doing my developer stuff, building docker containers and so.
fransje26 2y ago
I get 20 minutes from my Dell (not the XPS), with Vim. When it was brand-new, I got 40 minutes. A piece of hot garbage, with an energy-inefficient intel cpu..
- ben-schaaf 2y ago
  Frankly that sounds like you got a lemon. Even the most inefficient gaming laptops get over an hour under a full gaming workload.

BTW I get 19 hours from DELL XPS and Latitude. It's Linux with custom DE and Vim as IDE though.

by bvrmn 2y ago

BTW I get 19 hours from DELL XPS and Latitude. It's Linux with custom DE and Vim as IDE though.

amarka 2y ago

I get about 21 hours from mine, it's running Windows but powered off.

bee_rider 2y ago

This is why Apple can be slightly more honest about their battery specs, they don’t have the OS working against them. Unfortunately most DELLs XPS will be running Windows, so it is still misleading to provide specs based on what the hardware could do if not sabotaged.

hinkley 2y ago
I wonder if it’s like webpages. The numbers are calculated before marketing adds the crapware and ruins all of your hard work.

wklm 2y ago

can you share more details about your setup?

bvrmn 2y ago
Archlinux, mitigations (spectre alike) off, X11, OpenBox, bmpanel with only CPU/IO indicator. Light theme everywhere. Opera in power save mode. `powertop --auto-tune` and `echo 1 | sudo tee /sys/devices/system/cpu/intel_pstate/no_turbo` Current laptop is Latitude 7390.
- ribit 2y ago
  Right, so you are disabling all performance features and effectively turning your CPU into a low–end low–power SKU. Of course you’d get better battery life. It’s not the same thing though.
- Sohcahtoa82 2y ago
  > echo 1 | sudo tee /sys/devices/system/cpu/intel_pstate/no_turbo Isn't that going to torch performance? My i9-9900 has a base frequency of 3.6 Ghz and a turbo of 5.0 Ghz. Disabling the turbo would create a 28% drop in performance. I suppose if everything else on the system is configured to use as little power as possible, then it won't even be noticed. But seeing as CPUs underclock when idle (I've seen my i9 go as low as 1.2 Ghz), I'm not sure disabling turbo makes a significant impact except when your CPU is being pegged.
  - bvrmn 2y ago
    That's the point. I have no performance bottleneck with no_turbo. My i5 tends to turn on turbo mode and increased power demand (heat leaks) even if it's no needed. For example with no_turbo laptop is always cold and fan basically stays silent. With turbo it easily gets 40C warm while watching YT or doing my developer stuff, building docker containers and so.

fransje26 2y ago

I get 20 minutes from my Dell (not the XPS), with Vim. When it was brand-new, I got 40 minutes. A piece of hot garbage, with an energy-inefficient intel cpu..

ben-schaaf 2y ago
Frankly that sounds like you got a lemon. Even the most inefficient gaming laptops get over an hour under a full gaming workload.