MBP i5/i7 undervolting

Anyone knows how to undervolt a macbook pro running with i5/i7 processors?

coolbook doesn't work for them. I think that some features of those processors, such as 'turbo boost' makes it harder to come with something for them, regarding undervolting.


(obs.: I Know this has been mentioned in another topic, but I think it deserves a main thread, or else it will not be given focus)



Thanks!
Fernando.

 

There's only one program(I know of) that can undervolt Macbook's(in OS X) its called Coolbook, but it doesn't work with i5/i7

 

why do you want to undervolt?

 

@tHE j0KER
Yeah, this program was the only one I found, and it can't handle it yet.. :/


@pbcustom98
Because if it is done correctly, there will be no pain, and I would gain in battery lifefime and lower heat, in essence.. I hope. hahaha

 

why do you need more than 8-9 hours of estimated battery life in one sitting? with usage, you would see roughly 5-6 hours. do you need more than that?

 

mobile business user, or IT or HVAC service tech who has to run all over a building connecting to diagnostic ports??? I myself keep finding that 5-6 hours of usable time is not sufficient or myself unless I have an extremly rapid recharge rate on the battery.

 

i did some googling, and the only thing I came back with was coolbook which you said doesnt work.

aside from carrying an extra battert + screwdrivers to take the bottom cover off, I don't know of any other options.

last resort is playing with brightness/wifi/bluetooth etc.

are you a mobile business user, or IT or HVAC service tech? just curious.

 

all 3 plus business owner. so too many hats to wear.

which among another reason is why myself and my techs do not use MBP's for field use at all. with a quick replace battery they would be viable in some situations since alot of network diagnostics is done in a Linux/UNIX environment.

 

HyperMac makes external battery packs for MacBook:

HyperMac External Battery for Apple MacBook, iPhone, iPad, iPod

Too bad Apple is suing them for patent infringement for the magsafe connector they use.

 

Check out this from Duracell: http://www.duracellpower.com/portable-power/portable-chargers/powersource-mobile-100.aspx

They're $90 on eBay.

 

external batteries are good for on the go when you have to go all day... you can get a big pack in your normal laptop bag and get 24 hours of use

 

External batteries are a nice solution for who reaaally time that extra time xD

I, however, don't need it that much. I just wanted to undervolt it because it would give me some advantages such as a sliiightly better lifetime, and less heat. I don't really need those things, but, if I could do it, it would cost me nothing. And having it running a little cooler than it usually does would be really great for me. hahah


Thanks,
Fernando.

 

curious if there are any updates in regards to undervolting i5 / i7. I did it to my previous windows machine and it was awesome so I want to do it to my mac if at all possible.

 

I believe the C2duos were the last CPUs that could me manually undervolted. The new generation Intel-cpus (i3, i5, i7) handle that all by themselves, IIRC. (Although probably not to the same extent as a undervolting tinkerer and enthusiast would...)

 

Yep, it's an issue due to Intel not letting you change the voltages since it's automatically regulated by the CPU. AFAIK there is no way to undervolt them on laptops at the present time.