[kbalor]

So I have Lenovo i5. Nvidia 740m 6GB ram and 1 TB hd space. Now when I unplug the charger I noticed that the game became laggy and you can really see the difference when the charger is plugged in and unplugged. I already set the maximum performance when the charger is unplugged and plugged in. Even though it is still laggy.

[iZN]

You will need to look the settings of nVidia. I'm sure there is something related to this. I'm not sure about nVidia because I've ATI card in my laptop and there is Catalyst program for it where I've set to High Performance for every game which needs good GPU.

[gtakillerIV]

Check your battery settings. It's probably set to "balanced" or so when unplugged.

EDIT: Oh.. Sorry, seems that you've already done that..

[justsomeguy]

I don't think there is anything you can do other than change your game settings to low and lower your screen brightness and such.
I think it's because without charger your laptop is having issues balancing the power(videocard and screen and CPU)

[kbalor]

I saw this post somewhere at tomshardwa** forums.

Quote:

Most laptops have features that throttle down both the GPU and the CPU when you run on battery in order to save power. For the CPU, the feature is called speedstep for Intel CPUs. You have to go into the BIOS to disable this feature. For your GPU since it's a NVidia card, you'd most likely have to go into the NV control panel and either look for power settings or a section called PowerMizer. Note: your battery life will drop like a rock since both the CPU and GPU will run full tilt.

It seems that making Nvidia settings nor Battery settings to high performance will not work. And as what the guy said it looks like it is built in settings for Intel CPUs.

[TDM]

buy new pc or laptop , if you cant fix this prob

[kbalor]

Quote:

Originally Posted by TDM buy new pc or laptop , if you cant fix this prob

Wow that was so helpful. For your information I just bought it yesterday.

[KingHual]

I'm guessing your integrated graphics card (probably an Intel HD) is switched to when you unplug your laptop. I'm not experienced with nVidia cards, but take a look around the control panel for something like 'disable integrated graphics card'.

[Cameryn]

Probably a built-in throttling system on your BIOS.