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Switching processors on/off has appeared in Sys Prefs...??? (MBP 17" C2D)

D

danielbriggs

macrumors 6502
Original poster
Jun 13, 2006
291
1
Manchester, UK
Hi,

My 17" C2D MacBook Pro updated itself a few days ago, and when I went into system prefs today, I noticed there was a new icon. It was called "processor". Puzzeld, I opened it, and it turned out it lets you switch your cores on and off! I've not found this feature before. Has anyone else?

I worked out what it does, but does it have any substantial hit on performance with just normal use? And how much battery life will one expect to gain with only 1 core running?)

There is also a tray icon, so I can switch them on and off at will with ease!

I've attached some screenshots...


picture1qx1.png


picture2ji6.png


picture3sr1.png


picture4sp2.png



I did a search and couldn't find much... is this a new feature?

Thanks in advance!


Dan :)
 
danielbriggs said:
A two week old 17" C2D MacBook Pro
I treated myself with the money I earnt while I was off school and working in the summer!

It is OS X 10.4.8
With all patches


Anyone else have this?
Click to expand...

I have a MB but dont have that appear in sys pref?
 
I've had this randomly pop up since when I had a PowerBook G4 (of course it was kind of useless on a PowerBook). My guess is it's one of those hidden features in OS X.
 
I had this on my iMac G5, it came as part of XCode or some of the developer tools. So if you have those installed that is where it came from.
 
As said by yellow, it's CHUD, a part of the developer tools, however usually you have to manually install it from your install discs. Wonder how you got it on your system... It's not a refurb?

With regard to battery life, it's actually worse when running on one core, as the CPU doesn't scale itself up and down anymore, rather, it constantly runs at the highest frequency, which result in a very hot CPU and a fan going at high RPM. Thus, your battery life is actually impaired when running on only one core.
 
yellow said:
You have to specifically choose CHUD Tools during the installation.
It's not part of the default install.
Click to expand...

livingfortoday said:
Yeah, it's part of the CHUD tools:
http://developer.apple.com/tools/download/

Second link.
Click to expand...

NJuul said:
As said by yellow, it's CHUD, a part of the developer tools, however usually you have to manually install it from your install discs. Wonder how you got it on your system... It's not a refurb?

With regard to battery life, it's actually worse when running on one core, as the CPU doesn't scale itself up and down anymore, rather, it constantly runs at the highest frequency, which result in a very hot CPU and a fan going at high RPM. Thus, your battery life is actually impaired when running on only one core.
Click to expand...


Thanks alot, idid the default install. Thanks again.
 
Hi,

Thanks all!


Come to mention it, I did install xcode, so I could have a play with quartz composer.

Funny how they give you that tool. Perhaps it's to do with test apps for older machines?????


Anyway, Ta!


Dan :)
 
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