[andreas_g4]

http://www.swieskowski.net/icook/

Has anyone experience with that software? Especially on an iBook 900? It sounds at least interesting.

[d4nth3m4n]

looks scary

i might give it a whirl on my 700, but if he says that his ran weird at 800mhz, then i can hardly justify the risk.

might try it anyway. but how would i go about uninstalling it?

[Applefreak01]

I gave it a try on my 900MHz iBook. I set it to 1GHz and I couldn't tell the difference if any. Like 100MHz would make a huge difference anyway.

[Applefreak01]

Originally posted by d4nth3m4n:
looks scary

i might give it a whirl on my 700, but if he says that his ran weird at 800mhz, then i can hardly justify the risk.

might try it anyway. but how would i go about uninstalling it?

Just restart. You have to run the terminal and type in the code each time you want to overclock the processor. Restarting will dump the memory and set everything back to normal.

[turtle777]

Originally posted by Applefreak01:
I gave it a try on my 900MHz iBook. I set it to 1GHz and I couldn't tell the difference if any. Like 100MHz would make a huge difference anyway.

Did you run any benchmarks ?
Results anyone ?

-t

[Applefreak01]

No I didn't run any benchmarks. I ran it for about 15 minutes then restarted. It's not worth the risk.

[Dex13]

i'll try to get my friend's pic in here he showed me his attempt the other day, he has fans all over his ibook however.

[Grrr]

Originally posted by Applefreak01:
No I didn't run any benchmarks. I ran it for about 15 minutes then restarted. It's not worth the risk.

What risk? The CPU won't go Pop! you know.. Worst that can happen is the odd crash or freeze.. In which case, restart and try a slower speed.
(This is essentially what happened with my eMac, although thats a hardware hack. Either way, it's running just fine now with a 20% speed boost. It didn't like a 33% boost however)

[Dex13]

OverClked to 1Ghz

[macaddict0001]

cool. but it probably doesn't need all those fans and that stand because at least on apples website the ibook will not overheat with external tempuratures just a few degrees below body temperature.

oh well precautions are always good when overclocking.

[d4nth3m4n]

finally got around to playing with this. bumped up my 700 to 800. xbench is higher and the overall experience is snapper�.

worth a look. just wish the developer had a last name like smith...

[TeknoTurd]

Hrm, I tried this on my 700mhz iBook with 640mb of ram running 10.3.5. The program installs and the iCook kernal loads fine. I checked the current settings, and of course it reported that it was running at 700mhz. Everything was going fine until I tried to change the speed to 800mhz, when i typed in this command (copy/pasted it from the ReadMe actually, to ensure it was correct) the computer immediatley went into a kernal panic. Has anyone else experienced this? I changed all my Energy Panel prefs to the highest setting for processor power when plugged in or running off battery power and can't think of any other reason for the problem. Any ideas?

[babywriter2]

Stupid question, but...here goes.....

Is there any way to software overclock an original blueberry G3 iBook?
I'd love to get things a bit "snappier" on that.

- b

[WhyNot]

I have a 600mhz, with 640mb ram and I am up to 750mhz without a problem, this really is does seem quicker. I will run benchmarks soon. This is a life saver for 600mhz ibooks.

I think they really are "under-clocked" so they have room to go safely to 700mhz, minumum.

[TeknoTurd]

OK after some more investigating I discovered that the only speed that I was able to successfully overclock my 700mhz iBook to was 750mhz. 800 results in a kernal panic, 850 and 900 just locks the system up completley, but does not give me a kernal panic. Is anyone else in a similar position?

[Timan]

Is there anything like this for the G4 line of iBooks?

[klinux]

Originally posted by TeknoTurd:
OK after some more investigating I discovered that the only speed that I was able to successfully overclock my 700mhz iBook to was 750mhz.

Is the difference noticable in your opinion?

[TeknoTurd]

Not between 700 and 750. That's why I'm really trying to get 800 to work.

[theJoKell]

Successfully oc'ed my 700 to 800, seems to be pretty stable. However if you choose the "About this Mac" it still displays 700Mhz.

I haven't noticed a whole lot of difference, but it may be faster (snappier�???).

[C o r p]

will a 500mhz ibook work? (the original white ibook)

...nevermind its only a PPC 750

[theJoKell]

Also, settings reset after you put it to sleep. So you have to load it often if you sleep your iBook a lot... Kinda sucks in that regard.

[awaspaas]

kernal??

[datm]

Originally posted by C o r p:
will a 500mhz ibook work? (the original white ibook)

...nevermind its only a PPC 750

iCook is a small OS X kernel extension that allows simple overclocking of the IBM 750FX processor found in some Apple iBooks. It should be compatible with all iBooks that have more than 16 megabytes of video RAM, but not the new iBook G4s. At this time iCook requires OS X 10.3 or higher, however this will change in a future version.

[datm]

Oops. Well it took me a while to register. Oh well. Sorry.

[nosono]

This software method won't work for the original iBook AFAIK, but there is a hardware overclock available for those. It requires some disassembly and soldering, but I've done it and it works very well. The big boost isn't the CPU speed, but the switch from a 66MHz to 100MHz bus. All late-2001 iBooks and probably most of the dual-USB ones should be able to handle that, and virtually all of the late-2001 models can handle a switch from 500 to 600MHz.

For the late-2001 iBooks this isn't so much an overclock as allowing the machine to run as fast as it was supposed to. Apple was selling 600MHz models for more at the time, but they all use the same hardware; underclocking the 500MHz ones was simple product positioning, much as they did with the 20MHz IIsi back in the day (those too could be "repaired" to run at 25MHz - a 25% gain! ;).

http://norum.homeunix.net/~carl/mods/index.html

[CobaltGT]

my 900 hums along at 1ghz just fine, haven't tried higher yet