iBook "overclocking"

banana nut bread · August 16, 2002 12:38PM

I seem to recall reading somewhere that the 14.1" iBook could, via a software setting, have its CPU ramp up to 800Mhz and its FSB go from 100 to 200Mhz.

First of all, can anyone verify that this is true?

Secondly, if true, can someone give me a breakdown of the following:

A) What good things will it do for my computing experience

What bad things might it do to the iBook

C) How would I go about making said modifications?

Thanks in advance!

brianmacos · August 16, 2002 4:30PM

Yes it is possible to do it but it isn't done by software... you have to open your iBook and change a few things on the motherboard... for 100mhz extra it isn't worth it.

digitalandres · August 16, 2002 4:59PM

I don't want to make a new thread for this since it's a simple iBook question.

How long is the battery life? Apple claims up to 6 hours, but that's likely with all sorts of power saving settings and whatnot on. How long is the battery in practicle use? Like say, sitting under a tree webbrowsing or watching a DVD?

alcimedes · August 16, 2002 5:06PM

you can do it on the new ones using a software tool.

i believe they were the CHUD tools. the new version won't do it though.

it will increase speed.

it has a decent chance of frying your iBook forever.

and yes it does work.

aquatic · August 16, 2002 6:31PM

What/where are CHUD tools? Alcimedes I think you just messed up but you said this WILL and will NOT work on new (700mhz) iBooks:

[quote] you can do it on the new ones using a software tool.

i believe they were the CHUD tools. the new version won't do it though. <hr></blockquote>

Can you please clarify? Maybe you meant new version of CHUD? I have a friend who recently got a 700mhz iBook and wants to overclock it.

Alcimedes have you personally done this? How likely is it the iBook will fry? :eek:

Also is it possible in software (CHUD?) to clock the bus to 133mhz since the soldered RAM is actually PC 133?

paul · August 16, 2002 7:31PM

what about the 600MHz low-end?

sc_markt · August 16, 2002 10:19PM

If you have one of the new iBooks, you need the CHUD tools. The CHUD version currently at Apple has been changed so you can't overclock the iBooks.

If you can find somebody with an older version of CHUD tools, have them get a copy of it to you. I think <a href="http://www.xlr8yourmac.com/"; target="_blank">http://www.xlr8yourmac.com/</a>; has a writeup on how to use the CHUD tools to overclock it.

alcimedes · August 16, 2002 11:27PM

you need a newer iBook, one with a 100 Mhz system bus.

you also need the older CHUD tools. good luck finding them. (although they're out there)

i don't have one myself, but i know people who have done it as for whether or not it will fry your iBook, consider that 700 Mhz is the highest end iBook right now, and that that's the heat your system was designed to deal with. now thing about what happens when you mess that up.

will you fry it? dunno. is it possible, yes.

it's your iBook. are you willing to toss $1,500 out the window on the off chance that you'll get 100Mhz extra on your laptop?

if so, go ahead. to me, it wasn't worth it. the speed increase is negligable, IMO for the price you might have to pay.

aquatic · August 16, 2002 11:32PM

Anyone happen to have the older CHUD tools?

It's not my iBook and we just wanted to see if this will work, it's my understanding that you have to re-apply this every boot time. This isn't permanent.

Thanks for the replies!

chych · August 16, 2002 11:40PM

Eh, I heard somewhere that the 700mhz iBooks have IBM G3s in them rated for 800mhz, so if that is true it should be safe. Do not overclock the bus over the speed of your RAM though.

alcimedes · August 17, 2002 12:05AM

oh yeah, and this should probably be moved to the Genius Bar. sorry, been a bit out of it today or i would have done it the first time i replied to this thread.

luca · August 17, 2002 1:30AM

I remember reading that it only works on the newest iBook generation. The older iBooks (every 500 MHz one, and the 600 MHz ones with 8MB VRAM) use the PowerPC 750cx chip, while the new 600 and 700 MHz versions use the PowerPC 750fx chip. Apparently the fx can be software-overclocked but the cx can't.

In fact, some have speculated that the current 600 and 700 MHz iBooks are just software-downclocked versions of future ones. Since iBooks now have QE-supported graphics, they're not likely to get much more than a minor change next update, so Apple may have just put downclocked chips in them until they felt they were ready to have a 700/800 MHz lineup. I'm just speculating.

BTW, any form of overclocking, be it via a software hack, a flip of a switch, or a resistor swap, will void your warranty. Just so you know (but you probably already do know).

aquatic · August 17, 2002 4:30PM

Thanks Luca, I know.

Anyone happen to have the old version of "CHUD tools?"

defiant · August 17, 2002 6:03PM

[quote]Originally posted by Aquatik:

<strong>Thanks Luca, I know.

Anyone happen to have the old version of "CHUD tools?"

</strong><hr></blockquote>

have a look at carracho...

aquatic · August 19, 2002 12:05AM

I trust people here more than on Carracho

defiant · August 19, 2002 1:33PM

[quote]Originally posted by Aquatik:

<strong>I trust people here more than on Carracho

</strong><hr></blockquote>

ou have to download it from them, not uploading money...

aquatic · August 20, 2002 10:52PM

Yes can anyone here send me the old CHUD tools without PayPal?

iBook "overclocking"

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