Clevo P770DM Energy saving

Notebookcheck says the P770DM (Skylake) lasts ~3 hours while surfing.

I was looking to extend this,
a) via undervolting the CPU
b) manually enabling the Intel CPU via BIOS (I know Optimus isn't supported, but maybe via BIOS the Integrated GPU is usable?)
c) disabling GSync ( I read it costs a lot of energy)


Do you guys know if these options are viable/possible?

 

Hi!

a) Undervolting the CPU can be easily done via XTU,it will help,but it will be only noticeable in heavy use (consumption will be 3-5 watt less at 100%)
b)i'm not sure, it has to be a multiplexed GPU in order to be able to switch via the BIOS, like before optimus (switchable graphics), it will depend on the notebook, and i don't see it on the P770DM
c)You can disable G-sync directly on the nvidia control panel , but according to this : http://www.geforce.com/hardware/technology/g-sync/faq#q15 it doesn't have any effect on battry life

Elipsus

 

Turn off the lights or any special effects on keyboards and stuff, turn off USB ports or allow them to go to sleep/suspend. Infact don't use as many usb ports - helps prolong battery. Maybe get higher density RAM modules instead of having say 2-4 DIMMS, instead get a 16GB DIMM in stead fo 4 x 4GB as an example (not sure if there are 16GB SoDIMM yet). If you have Multiple Harddrives, think of getting a single m.2 2280 with higher capacity instead... Disable your DVD drive if you never use it. Dimm your screen's contrast and lighting. do not turn your fans on. They drain power. Also - try to keep your battery in peak physical condition too, make sure it gets a full charge and a full discharge at least once a month or more. (I do not mean go to 0% battery life, but about 4-5% should be fine for fully drained. Could damage it if going further, or reverse polarity on cells, or who knows what else).

Hope some of this helps. As for the GPU and CPU - your on to it already. If you do not use your trackpad, for instance, disable that too. Though I wouldn't disable the keyboard, just incase, ever.

 

The two biggest drains on battery on this machine are things you cannot really do anything about - the desktop CPU and always-on dGPU without Optimus.

Mobile CPUs typically idle around 1W or so, while desktop chips idle around 20-30W.

So sure, you can turn off certain features, dim the screen, undervolt, etc. But by and large, there's not much you can do about the CPU and GPU, and those are the biggest battery drains.

 

True, you can mitigate the impact on battery drain, but this system is very unlikely to tout any kind of impressive battery life due to the reasons Ramzay mentioned, no matter what cuts you make.

 

Thanks guys, great input !

Yeah was kinda hoping to be able to at least manually select the Intel GPU in BIOS. Guess that won't work.

And yeah I'm aware overall this clevo isn't built to last that long on battery. However sth like 4 hours or so would be nice. Besides, getting a Clevo with soldered GPU wouldn't be nice, coz if I spent 2000-2500 $ I would like to be able to upgrade it in a year or 2 with a new GPU at least.

 

That really isn't a common option at all. Wish it was available on more models by default, it would be nice to have.

 

dont forget to underclock the GPU and also undervolt it once the functionality is provided on the fly by prema

igpu is physically not connected to the display in the ZM / DM machines, so even if u enable it, it wont do u any good...

 

You can use a program like nvidia inspector to clamp the power state of the GPU and ensure it never clocks up when on the desktop. I used to do that to extend the life of my P570WM.

 

same here! gives u about 15-30 min more juice

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