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Mac Daniel's Advice
Overclocking a Slot-loading iMac
Dan Knight - 2009.02.12 - Tip Jar
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The 'iMac DV ClockUp' page was originally posted at <http://www.bekkoame.ne.jp/~t-imai/imacde1.html> and is no longer available there. We have adapted that information for the benefit of those who wish to overclock slot-loading iMacs. This may not apply to 500 MHz to 700 MHz iMacs that use the PowerPC 750CXe CPU, as they use a revised logic board. The original author is not known to us.
This infomation does not confirm stable operation. Please note that any modifications you make to your iMac are made at your own risk.
I analyzed how to increase the clock speed of an iMac DV. If
you adjust the set of resistors labeled "R35" to "R42" on the logic
board, you may configure the processor clock PLL.
First, remove the display connector cover.



Remove iMac bottom shield (6 screws).

Nonfigure the set of resistors labeled "R35" to "R42" on the logic board.

Resistor Settings
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- S: mount resistor
- x: remove resistor
P.S. Thank you for Mr.Nanko.
Not sure if you should upgrade your old Mac or replace it? Check the Mac Daniel index to see if we've already addressed your problem.
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