How to limit total power draw

I will be embarking on a long flight soon. I plan to game onboard using my G73 laptop (which has a 150W power brick). I know that the power sockets in plane are exactly 150W for the entire isle (set of 3/4 seats in a line). And i have red online that if anything draws more power than available, the breaker trips and you loose power on that isle.

So my question is there a way to limit the total power draw from the laptop to maybe 120W and 140W (to leave some margin if anybody else hooks up a tablet or something) or maximum 150W.

Also a side issue, I will be taking my office laptop with me as well so i wanted to ask if anybody has any experience with travelling with two laptops as carry on? Do you think it will cause any issues?

 

Buy a 120W power supply.

OR

Turn off CPU boost

Limit GPU speed

Limit in-game FPS

Test for power draw.

 

With my old GX660R when I used the 120W instead of the 150W, my laptop would immediately shut down when doing something intensive. That being said, the rest of the advice should be done (limit CPU/GPU and FPS)

 

You could use Throttlestop and setup a profile to downclock your CPU when ever you need it.

 

Ok i experimented a little bit and it seems that lowering the GPU clocks to battery settings reduces the power consumption to about 110W to 120W. I do not have a kill a watt and used a multi meter to check at DC side. I already had a joint in the cord at that side, it was easier to measure.

I tried the game i am currently playing (Dues EX HR on lower settings) at these clocks and it performs ok. I guess I could live with that for the moment.

Actually i still haven't decided if i will take this laptop with me or not.

 

Whats already been suggested plus lowering the screen brightness will help with power consumption. You can get little inexpensive devices that plug into the power outlet and your device that tell you exactly how much power its drawing - I use them to work out how long a UPS will last in case of a power outage.

 

With intel XTU you can also limit the CPU clockspeeds to use a more manageable frequency. But it depends on your G73 version and CPU version.

 

I have G73JH (I7 720). XTU says CPU is locked

 

Ohhh, are you running the AMD HD5870? Then you shouldn't worry too much, it should be easier to handle the power with the before mentioned tips. I had an old GX660R with basically the same specs and it ran on a 120W PSU. When I upgraded to an intel 920xm, I had to switch to a 150W PSU otherwise my system would power off at intensive tasks haha

 

yes it is the one with HD5870, the very early ones. I preordered it (thanks to some early leads by -=$tR|k3r=-) and it does draw full 150W when fully loaded. I had a problem with the power jack in my power brick (it wore off became loose) and i bought a aftermarket power brick. But it didnt go well. I guess it was not providing full juice. The laptop would randomly switch to battery mode for few seconds as if no power supply is connected.
In the end i had to cut off the power jack and attach it with my old brick. (hence the joint i mentioned in my previous post).