Disabling one of the cores

I remember seeing iMac Core Duo reviews in which the reviewer turned one of the cores off and only used one to run his computer. Is this possible with the Macbook pro?
Macbook Pro 1.83   Mac OS X (10.4.5)  

rakghoul: check out the following thread:
http://discussions.apple.com/thread.jspa?threadID=375395&tstart=0

Similar Messages

  • Battery life after disabling one of the cores

    After installing the CHUD tool from the installation DVD #1 I tried disabling one of the cores to see if I can increase the battery life, but it seems as soon as I disable one core the frequency jumps to 1.83 GHz and constantly stays at the maximum. So it seems the battery time drops by ~30 min compared to using dual core when at idle. Since this is the battery life during idle, there may be a benefit if one constantly maxes out the frequency in dual core mode when running on battery. I don't max out the CPU frequency most of the time so disabling a core may actually decrease my battery life. Only if I can keep 1.5GHz or below with single core use...

    i was also playing around with turning on and off the second CPU after installing CHUD .. i was quite surprised that my battery time is ~30min to ~1hr less when only one CPU is on .. this is completly the oppisite of what i thought would happen. just thought it was kinda interesting.
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  • Need to disable one of the select-options in dynamic selection screen

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  • Quicktime disables one of the disks in my RAID 5 array.

    Hi,
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    Cheers,
    Mark.

    I just had the same problem. This is the second time I'm having this issue, the first time was when I installed Quicktime the first time a couple months ago, I don't remember which version it was (cannot remember if it was during the installation of the first file I played). I lost one of my drive in my RAID 0 or 1 (mirroring), fortunately I was able to rebuilt the image.
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  • Issue with Disabling one of the menu item in Forms6i

    Hi,
    I have a requirement where I need to disable the IR/PO Information (menu item) created using Form Personalization in Sales Order form.
    If the Warehouse is other than ‘FIM’ it should be disabled for that particular line.
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    Regards,
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    Bala,
    I can suggest one work around.
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    This way, the PO information screen will come up only for FIM.
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    In the actions, you can say "This menu option is not available"
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  • Want to disable one of the sub link in top menue "Goto"

    Hi All,
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    Thanks
    Dinesh
    Edited by: Dineshv on Jun 7, 2011 6:52 AM

    Hi Martin Voros,
    What you are saying is wrong i guess. Because in our company some times users complaining that they can't save reports as a local file since the "List > Save > Local File" link is disable (ash color). Once i give the autherization for object S_GUI field name ACTVT = 61, they can go ahead with that and save it as a local file.
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    Thanks
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  • How to disable one F key without disabling the rest

    OK, this is the situation:
    I don't want to disable all the keys because i use them often.
    I've already tried FunctionFlip, but it doesn't seem to work in Final Cut Pro (and the reason I need to disable one of the keys is primarily because I need it for a FCP shortcut)
    is there another way to disable only one key?
    OR - If I were to disable all F keys, how do I reassign some of them back to their default mac function? does anyone know the names of the menu commands for Volume up and down and for mute?
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    To use the F keys as assigned in FCP....

  • Disabling one processor

    Hi,
    i'm a little curious about this,
    is it possible to disable one processor manually from osx?
    Will it consume less power (perhaps half?).
    I'm asking this because i keep the macpro on all the day,
    but only a few hours i need to work hard with all the 4 cores.
    I'm not crazy, simply my energy bill this month was a bit too high and i think the guilty was the macpro.

    you can use apples chud tools to disable one or more cores: http://www.versiontracker.com/dyn/moreinfo/macosx/14358
    when you install it youll get a 'hardware' or 'processor' prefpane which will let you disable the last 3 cores of the mac. im not sure whether this actually turns them off, but they certainly get no tasks to carry out so it should use less power. you can also keep your work to just the boot drive and any other drives you have in there will spin down, thatll use less power. i cant think of much else to do really.. turn the brightness down on your monitor if its tft, those backlights eat up power. oh yea, and turn off airport and bluetooth as well as the ethernet ports if youre not using them.

  • One of the CPU disappeared !!!

    Hi,
    As many of us I guess, I'm using IStat Pro to monitor my macbook (temperatures etc.) and it seemed since 2/3 months I have CPU A still apprearing, but not the CPU B !
    My mac started to be a bit slow around the same period so I wonder if one of the core does not work anymore !!!
    Is there any other way i can check with an internal application (ie: mac internal system application) if both of the CPU are working ?
    Thanks
    Y

    It's the new Intel i7 machines that have "virtual" cores.
    The virtual cores are yet another version of Hyperthreading, hopefully better implemented then last time around.
    HT is not good for programs that operate in real-time, specifically, Logic Audio. Performance tests show Logic running more efficiently when Hyperthreading is shut of via the terminal.
    pancenter-

  • How to disable one Audio port on MSI MB with Realtek HD Audio

    Hello MIS gurus.
    I have MSI p45t-c51 MBoard with ALC889 Audio chipset. On this board i installed Win XP Pro with Realtek HD Audio Driver 5.10.0.6101.
    On back audio plate i use Edifier 2.1 audio over one of the audio port's and HeadPhones over another one.
    My question is: Is it possible to disable one of the ports so the sound only come from 1 of the audio devices instead of both.
    At this moment, what i do is in the Realtek HD Audio Manager, i set LINE IN for the device i do not want to hear. - Advice if that is bad for the device that is plugged in at that port!
    Thanks to all.
    Regards.

    Just disable the Onboard Audio from BIOS.

  • I have a problem with my iPhone 5 stopped working the sleep / power and simultaneously refused to obey the HOME button. I can not use either one or the other. I can not enable or disable the device, display lights up when you plug the charger. same displa

    I have a problem with my iPhone 5 stopped working the sleep / power and simultaneously refused to obey the HOME button. I can not use either one or the other. I can not enable or disable the device, display lights up when you plug the charger. same display works fine as it is surprising. or maybe someone knows what is the reason for this? is there any way to solve this problem?

    More than likely its a hardware issue, I have never encountered such a problem and best bet is to just go get it replaced. If you have insurance on your device apple will replace it as long as there was no water damage, if you dont have insurance they will charge $200 more or less. Hope you get it fixed

  • I can disable one of my MacBook's two CPUs using the CPUPalette application.  How can I do it under control of a script?

    I can disable one of my MacBook's two processors using the CPUPalette application.  How can I do it under control of a script?
    I want to do this because the MacBook is overheating.  I will soon get it repaired, but in the meantime, disabling CPU 2 is effective at preventing overheating.  Sadly CPUPalette is not scriptable, and it won't remember its setting after the computer is restarted.
    Would it be worth learning about the relevant Darwin API (supposing there is one) and writing a small command-line program for the job?  I am an experienced developer of software using Standard C.
    Comments appreciated.
    Dave

    i wonder if there is a key that is stuck cause whenever i try to turn it on again after the 60 minute lockout, it says that the password was incorrect and i am locked out for another 60 minutes

  • Disable "Estimated network bandwidth on one of the connections" check

    I have several Windows clients that hang at applying computer settings when starting up. All computers that show this behavior have 2 network adapters. One is the physical adapter another is a virtual adapter created by 3rd party software. Virtual Network
    adapter always stays enabled (even if you disable it, it comes right back to the enabled state) and has an APIPA address assigned to it. The OS sees the adapter in connected state and attempts to estimate the network bandwidth on that connection,
    but since no traffic is being passed through on this link it's  forced to wait for the time out, which causes the delay. So the question is, how do you exclude a specific network adapter from being checked for bandwidth at the OS start
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    Thanks

    Hi,
    >>One is the physical adapter another is a virtual adapter created by 3rd party software. Virtual Network adapter always stays enabled (even if you disable it, it comes right back to the enabled state
    Based on the description, it's recommended that we contact the vendor support of the software to see if they can help disable the virtual adapter or provide some suggestions regarding the situation.
    Best regards,
    Frank Shen
    Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact [email protected]

  • Disable Route through WLB to one of the 2 appservers to Discoverer

    I have an appl server farm
    On top there's a webcache loadbalancer, which divides routes to the 2 webcaches of
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    What I want is
    - Disable the route to one of the appl servers for discoverer viewer and Plus
    ( is running on both midtiers ) So the loadbalancer should route to only 1 appl server
    - Forms & reports ( also on both midtiers ) should be available on both appl servers

    If you define the URLs apart (so not / but e.g. /discoverer and /forms) in the webcache config, you can configure which server to route to.

  • I got problem on installing iTunes. When I clicked iTunes out, two windows popped out. One said the procedure entry point CFAttributed String Create Mutable could not be located in the dynamic link library Core Foundation.dll.

    I got problem on installing iTunes. When I clicked iTunes out, two windows popped out. One said the procedure entry point CFAttributed String Create Mutable could not be located in the dynamic link library Core Foundation.dll. and one just said *Itunes was not installed correctly.  Please re install I Tunes Error 7 (windows error 127) . I've tried uninstalling and reinstalling it. But either way cant work. I really need some of your help! PLS HELP ME!

    For general advice see Troubleshooting issues with iTunes for Windows updates.
    The error shares a similar pattern to that in the third box, so a similar approach should work. Look for CoreFoundation.dll in C:\Program Files (x86)\Common Files\Apple\Apple Application Support, delete it, then repair Apple Application Support.
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    Your library should be unaffected by these steps but there is backup and recovery advice elsewhere in the user tip.
    tt2

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