This is cool ! This is pure hardware and has no effect whether it is running Linux or Windows? Also, what is the general power consumption of laptop displays in general - say a XPS or Macbook Pro?
I expect the display power consumption not to depend on the OS, unless there'd be some driver quirks. the remaining power consumption is going to be OS-dependent, though, as they differ in drivers, background tasks etc.
Linux user here...there are still known differences in power consumption between Windows and Linux. To be perfectly honest, Linux remains a bit less efficient, resulting in shorter battery life. The difference isn't as dramatic as it used to be in years past, but significant enough to be noteworthy and potentially discouraging to people looking to transition off Windows.
So let's make some calculations. If it were to last 24 hours and display consumes 1W, that means we are left with 56-24=32Wh for the hardware. Dividing it by 24 hours, it means that it should consume an average of 32/24=1.5W. 99% of laptops consume more than that in idle, so there is no way one could use this laptop for so long in one charge.
How does he know ? Common sense. Even Intels ULP Atom chips consume more than 1.5W at anything above idle. So there isn't a hope in hell of this thing drawing less. Ergo you can't actually use it for 24hrs. Sure, you might be able to turn off wi-fi, sound, turn the screen to minimum and leave it sitting there doing nothing for 24hrs before the battery is fully drained...But 24hrs of SOT while actually doing stuff ? No chance. It's just marketing fluff.
I think you are confusing total power and thinking total power is 1W - 1W is for the screen only. If this was a new Ice Lake cpu, I would think 24 hr battery life might happen but with current cpu's I doubt.
Big question, does the cpu have the dynamic tuning support like Ice lake and kaby lake G.
Your calculations are off. It's actually got 1.3Wh (Yes, I cheated, I used my calculator). As for the battery life over time: The processor consumes between 10w and 25w [1] The SSD is unknown, but lets assume, for the sake of argument, a WD blue because it's cheap [2] or the HP950, for the same reason. [3] They consume, respectively, 5.19W (extrapolated from [3] and [6]), and 6.93W [4] when active, and 0.65W (extrapolated from [5] and [7]) and 0.73W [4] when idle. Now you can add in 1W for the screen when it's not running (that is the not runnig figure, right?)
Now we have to assume that some of that power the battery keeps so that it never goes totally flat. Noramlly that's 20% so 56.2*0.8=44.96Wh. Assuming that [8] is correct we can go on to say that 44.96-24=20.96Wh for the screen, 20.96-24=-3.04 for the idle processor and finally the RAM at 0.08W, -3.04-2.56=-5.6Wh.
Range anxiety becomes much less of a problem once you've got USB-PD and an 99wh / 30w USB-PD battery bank. My surface go can quite happily "go" for something like 15 hours or so from the power back before running, as long as I don't try anything too heavy on the CPU like gaming (Specifically selected titles, of course). Need more endurance? Carry two packs.
Thanks, HP. That doesn't tell me about pressure levels, precision, tilt support, technology interface/brand, or the other important bits. Not much of a specification there. However, I get the impression that this device is aimed at the Microsoft Office worker -- not creatives. That's ok. Different devices for different audiences!
Bought this laptop earlier this year with the 32GB ram configuration. Lasts for 4-5 hours maximum on a workday with medium to high brightness. No where closer to the claims. I moved from Mac - windows is still choppy and slow. Even Microsoft's office products run much faster on mid range Mac compare to this top of the line windows machine (paid 4 grand for the top specs). Hardware is amazing, keyboard fantastic but moving back to Mac mainly because of the OS.
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Teckk - Wednesday, May 29, 2019 - link
This is cool ! This is pure hardware and has no effect whether it is running Linux or Windows? Also, what is the general power consumption of laptop displays in general - say a XPS or Macbook Pro?MrSpadge - Wednesday, May 29, 2019 - link
I expect the display power consumption not to depend on the OS, unless there'd be some driver quirks. the remaining power consumption is going to be OS-dependent, though, as they differ in drivers, background tasks etc.PeachNCream - Wednesday, May 29, 2019 - link
Linux user here...there are still known differences in power consumption between Windows and Linux. To be perfectly honest, Linux remains a bit less efficient, resulting in shorter battery life. The difference isn't as dramatic as it used to be in years past, but significant enough to be noteworthy and potentially discouraging to people looking to transition off Windows.s.yu - Wednesday, May 29, 2019 - link
1W, 1nit?yeeeeman - Wednesday, May 29, 2019 - link
So let's make some calculations. If it were to last 24 hours and display consumes 1W, that means we are left with 56-24=32Wh for the hardware. Dividing it by 24 hours, it means that it should consume an average of 32/24=1.5W. 99% of laptops consume more than that in idle, so there is no way one could use this laptop for so long in one charge.MrSpadge - Wednesday, May 29, 2019 - link
How do you know? It's very rare to see measurements of display and system seperated.Haawser - Wednesday, May 29, 2019 - link
How does he know ? Common sense. Even Intels ULP Atom chips consume more than 1.5W at anything above idle. So there isn't a hope in hell of this thing drawing less. Ergo you can't actually use it for 24hrs. Sure, you might be able to turn off wi-fi, sound, turn the screen to minimum and leave it sitting there doing nothing for 24hrs before the battery is fully drained...But 24hrs of SOT while actually doing stuff ? No chance. It's just marketing fluff.HStewart - Thursday, May 30, 2019 - link
I think you are confusing total power and thinking total power is 1W - 1W is for the screen only. If this was a new Ice Lake cpu, I would think 24 hr battery life might happen but with current cpu's I doubt.Big question, does the cpu have the dynamic tuning support like Ice lake and kaby lake G.
ballsystemlord - Wednesday, May 29, 2019 - link
Your calculations are off. It's actually got 1.3Wh (Yes, I cheated, I used my calculator).As for the battery life over time:
The processor consumes between 10w and 25w [1]
The SSD is unknown, but lets assume, for the sake of argument, a WD blue because it's cheap [2] or the HP950, for the same reason. [3]
They consume, respectively, 5.19W (extrapolated from [3] and [6]), and 6.93W [4] when active, and 0.65W (extrapolated from [5] and [7]) and 0.73W [4] when idle.
Now you can add in 1W for the screen when it's not running (that is the not runnig figure, right?)
Now we have to assume that some of that power the battery keeps so that it never goes totally flat. Noramlly that's 20% so 56.2*0.8=44.96Wh.
Assuming that [8] is correct we can go on to say that 44.96-24=20.96Wh for the screen, 20.96-24=-3.04 for the idle processor and finally the RAM at 0.08W, -3.04-2.56=-5.6Wh.
NASA, we have a problem...
[1]: https://www.intel.com/content/www/us/en/products/p...
[2]: https://www.anandtech.com/show/13421/the-mushkin-s...
[3]: https://www.anandtech.com/show/13759/comparing-ada...
[4]: https://www.anandtech.com/show/13818/hp-announces-...
[5]: https://www.anandtech.com/show/11792/the-sandisk-u...
[6]: https://www.anandtech.com/show/10534/crucial-expan...
[7]: https://www.anandtech.com/show/11792/the-sandisk-u...
[8]: https://www.quora.com/What-is-roughly-the-power-co...
ballsystemlord - Wednesday, May 29, 2019 - link
EDIT: That's 0.08W per GB. 32*0.08=2.56W.zodiacfml - Wednesday, May 29, 2019 - link
1 watt? I find it hard to believe, more likely 1 watt while reading text with a white background in dim room.thewishy - Thursday, May 30, 2019 - link
I *think* the 1 Watt relates to the power required to refresh the actual pixels on the screen, not the backlightthewishy - Thursday, May 30, 2019 - link
Range anxiety becomes much less of a problem once you've got USB-PD and an 99wh / 30w USB-PD battery bank. My surface go can quite happily "go" for something like 15 hours or so from the power back before running, as long as I don't try anything too heavy on the CPU like gaming (Specifically selected titles, of course). Need more endurance? Carry two packs.BigDragon - Thursday, May 30, 2019 - link
Input devices: [...]; Pen.Thanks, HP. That doesn't tell me about pressure levels, precision, tilt support, technology interface/brand, or the other important bits. Not much of a specification there. However, I get the impression that this device is aimed at the Microsoft Office worker -- not creatives. That's ok. Different devices for different audiences!
Rattlerr - Monday, November 18, 2019 - link
Bought this laptop earlier this year with the 32GB ram configuration. Lasts for 4-5 hours maximum on a workday with medium to high brightness. No where closer to the claims. I moved from Mac - windows is still choppy and slow. Even Microsoft's office products run much faster on mid range Mac compare to this top of the line windows machine (paid 4 grand for the top specs). Hardware is amazing, keyboard fantastic but moving back to Mac mainly because of the OS.