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overclock iBook 800 to 900
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Senior User
Join Date: Oct 2001
Location: Indiana
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Senior User
Join Date: Oct 2001
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There's no way I'm going to solder anything on my iBook for making it 1.125 times as fast. I recently upgraded from 600 to 800 and barely noticed anything CPU-wise (going from the Rage to a Radeon did make a difference in 3D apps though), so why risk anything for 12.5%?
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Stink different.
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Senior User
Join Date: Jan 2001
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fsck, I'll do it this weekend. Thanks for the linky!! 
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"-Dodge This"
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Senior User
Join Date: Mar 2001
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What I want to see is someone who overclocks their 900 to 1Ghz! Come on all you adventurous types!
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Dedicated MacNNer
Join Date: Nov 2002
Location: CT
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well, i read/write french, so i wrote the guy an email asking if he could send me (and/or host) a step-by-step guide w/ pics if possible. I also asked him if he feels the extra speed at all, and if he could run xbench for the heck of it. Apparently all that needs to be done is remove the bridge which is pointed out on the pic. I asked him how his iBook has been doing since- if all hs fine after 1 week i'm probably going to attempt it myself aswell
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Senior User
Join Date: Oct 2001
Location: Indiana
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This is great! Can't wait to hear about what happens!
Please keep this thread alive.
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Senior User
Join Date: Jan 2001
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OK, I tried the OC tonight. I got a KP at the boot logo.
Removing the resistor above R821 which is R823 it think, gets me to 850 however.
Anyone else give it a shot?
I wonder if a voltage tweak would help out and get me stable at 900.
anyone know where the voltage registers are located and what the layout is?
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"-Dodge This"
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Dedicated MacNNer
Join Date: Mar 2003
Location: BrisVegas, Australia
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Making those mods - you are a braver person than me!! 
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Dedicated MacNNer
Join Date: Nov 2002
Location: CT
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The guys on Macbidouille are attempting to overclock the iBook 800, to 1Ghz! For those who understand french, (or who are brave nuff to read with google translator), you can follow this thread to see whats going on
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Mac Elite
Join Date: Dec 2000
Location: In support of our troops
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Originally posted by daSilVetZ:
The guys on Macbidouille are attempting to overclock the iBook 800, to 1Ghz! For those who understand french, (or who are brave nuff to read with google translator), you can follow this thread to see whats going on
Hell, if someone would only make the instructions in American talk I could do it.
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Senior User
Join Date: Jan 2001
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For all interested,
iBook 800 resistor table
0= Resistor X=No Resistor
Multiplier.........8.....8.5...9....10
R825................0......X.....0....0
R821................0......0.....X....0
R817................0......0.....0....X
R813................0......0.....0....0
R809................X......X.....X....X
R825 is closest to the CPU and R809 is closest to the RAM slot.
I settled on 850. The HS got VERY hot at 900 and would not boot past the desktop (OS9) or the boot logo (OS X).
I resoldered a few times to remove improper soldering as a variable.
YMMV
Cheers
(Last edited by milhouse; May 4, 2003 at 10:19 PM.
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"-Dodge This"
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Dedicated MacNNer
Join Date: Jan 2003
Location: San Francisco
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