Overclock "Clamshell" iBook

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Overclock "Clamshell" iBook

I searched the forums here and tried searching with google, but for some reason I can't find any info on overclocking the old clamshell iBook. I'm not looking to do a major overclock I just wanted to up the bus speed a little. I know it has been done, because i read an article last year. If anyone has done this, or remembers reading about it, please post a link or comment.

Thanks in advance for any help.

-Tech

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Marc Schrier's clock-chipping/overclocking page . . .

is always a good place to start.
http://homepage.mac.com/schrier/mhz.html

here's where i go the details to overclock my Blueberry 300 (to 400mhz.)
http://www.bekkoame.ne.jp/~t-imai/ibooke1.html

hth,

Dan K

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Thanks

Thank you so much! that is exactly what i was looking for!

-Tech

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Overclock "Clamshell" iBook

Ok, After playing around with my iBook and rebuilding the heatsink out of copper I got the processor up to 433mhz, and after i buy a small blower fan i'm gonna try for 466mhz. but i was wondering if there is any way to speed up the bus? right now it's at 67mhz, and i think that a higher bus would improve performance even more. if anyone has any ideas i would be very greatful. thanks for your time.

-Tech

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Uping the bus will give hardl

Uping the bus will give hardly any performance boost at all. It seems that the mac was optimised for the specific bus speed.

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Really?

Really? I always thought that a higher bus speed was better. i know on the dual usb iBook there is a huge performance jump by just upping the bus. even if it wont help much, does anyone know which jumpers to move?

-Tech

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Well I do know that it makes

Well I do know that it makes minor difference on the biege G3's...and the iMac rev A-D. As the iBook is virtual a mini iMac then I doupt it would make much difference.

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Hmm...

hmm... Well. Right now i'm using xbench to test the performance of the 1999 clamshell iBook at 300, 400, 433, 466, and 500mhz. and i wanted to see if, performance wise, it is worth it to overclock the iBook beyond 400mhz. also, i'm one of those annoying people who question everthing. ie i drop an apple (fruit, not the computer) to check that gravity exists. i just wanted to see for myself if a higher bus, when combined with a higher clock speed, makes any real difference. i've heard on other forums that it doesn't but then some of my friends say that it will... so I would like to try it for myself. and btw. later this week i'll be posting all my results online. i'll post a link here later.

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I'll definitely say that over

I'll definitely say that overclocking the bus speed of a computer makes a huge difference. I nearly doubled the XBench results on my B&W tower by going from 300Mhz/100Mhz to 360Mhz/120Mhz (15.61 vs. 27 when only testing the processor).

Unfortunately though, I can't help you with where to find the info.

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Thanks.

Thanks For The Reply. It Makes me want to speed up the bus even more. if i find anything i'll post a link here for everyone else. if anyone here knows or has done it please post a reply.

-Tech

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clamshell bus speedup

never seen any info on how it's done, you may be blazing new trails for us all if you can figger out how to do it.

As for bus speeds in general, I've only ever OCed Gossamers, every one I've had went to 83mHz without problems. Honestly, I really can't say what the effect was, I never tested nor even ever used one at 66mHz. Blum 3

I s'pose I should do a runthrough of my usual Q3A tests at 66 and 83, with cpu at same speed in both sets. That'd at least give an idea whether it's really worthwhile or not.

dan k

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Hmm...

Well, I can't find anything on the internet either. this weekend, if i get brave enough i'll look at the bord and try to figure out which jumpers to move. also on a side note the 1999 iBook does not work past 433mhz. it is very stable at 433, but at 466 and 500 the display does not come on. but it appears to boot normally otherwise.

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