Hi,


I have this silly question nagging since I started using MBPro. This probably I am Dell laptop user for many years. Dell laptop allows you to lower the CPU processing speed while it is on battery to lengthen battery / usage time. Does this apply to MBPro too? If it does, how to I configure this? Thanks.

/lim/

With the new Intel Macs they've taken this feature away. The Core 2 Duo automatically adjusts, but I miss the feature. I would like the ability to keep the speed low when I really want the battery to last or to keep the laptop cooler.

Its very simple. Just simply select the battery icon and set it to Better Energy Savings. OSX will automatically reduce GPU , CPU and HDD spin speed to extend the battery life. Its all controlled by EFI. Dont worry. It even reduces the wifi transmission power and bluetooth. So you dont worry about it

Of course you can manually override the default system parameters by using third party tools. There are couple of tools that just does that !

I do it via the Battery icon in the menu bar. Just select Battery Energy Savings. Never really looked into what's affected.

What's the downside of doing that though? Will it, for example, take programs longer to load?

What if I use custom setting? Will it reduce GPU, CPU and HDD spin speed to extend the battery life as what prasys said? I not sure about this before it only allows me to set the time for the screen and hdd to sleep but nothing mention about CPU performance.

Prasys, what r the tools you recommend to tweak the macbook pro performance?

Thanx

This post has been edited by sshark: Nov 23 2007, 04:44 PM

If you are really a geek into this kind of thing. You may try the bootcamp way. and use windows application to adjust. Windows have lots of these kind of juice around. But do it at your own risk.

While people says that the gpu inside MBP has been underclocked. i say it's done for a reason. may be to prevent overheat or something.

Well, overclocking is just not for mb yet. at least not what i know of. you may fry it. processor speed only matters when you are doing complex computation, like rendering, calculate constellations, calculate this calculate that. If not, normal usage wont use up both two cores too much and too often.

2Ghz will take care most of the tasks. No worries.

I am a geek but I not too keen in overclocking a MBP or any notebook for the matter. Overlocking sometimes involved lots of trial and error before you can get it right. It is more easily done with a desktop as you can increase cooling capacity and the power supply. these 2 essentials are not available in a notebook.

the reason I ask the question is I wanna know what is going on behind the scene in my MBP, not so much about overclocking. I believe apple setting is optimum for most situations for general users. I am not special user anyway.. just a curious user

Guys, just wanna know. Other notebooks out there can actually power up the system without battery if you use the power adapter. Can MBP do the same thing here? Need advices. Thanks.

yes, all recent laptop/ notebook Macs can run purely off the AC adapter.