Overclock eMac 1.25GHz to 1.5GHz without voltage increase

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superlions16
Posts: 2
Joined: Mon Dec 31, 2018 9:18 pm

Overclock eMac 1.25GHz to 1.5GHz without voltage increase

Post by superlions16 » Fri Feb 08, 2019 7:51 pm

This guide only works with eMacs which are the USB2 models. I have not tested this on a 1.42GHz eMac, but if they have R270, R658, R673, R689, and R275, this may work.
If you don't have a soldering iron, just pick the resistors off. BE CAREFUL! I AM NOT RESPONSIBLE FOR ANY DAMAGE DONE TO YOUR eMAC, YOU ARE!
All you do is take the motherboard out, and remove the following resistors:
-R270
-R673
-R689
Image
Image
1.42GHz model (UNKNOWN, MAY NOT WORK):
-R275
-R689

People have tried getting up to higher speeds, but those don't really work unless you raise the voltage.
R453 = Vid0
R454 = Vid1
R455 = Vid2
R456 = Vid3
R457 = Vid4
Image
There is more info by another guy, but he speaks in french: https://sites.google.com/site/overclockmac/g4emac2
Image
Image

Sources:
-The french guy's site (Credit goes to him for the images)
-MacOS9Lives: http://macos9lives.com/smforum/index.php?topic=4368.0

Alex
Posts: 6
Joined: Mon Dec 31, 2018 8:52 pm

Re: Overclock eMac 1.25GHz to 1.5GHz without voltage increase

Post by Alex » Sun Feb 10, 2019 12:11 pm

Thanks for sharing.

I did something similar, went from an eMac 1GHz to 1.25GHz. Works flawlessly.

MemoriMacfr
Posts: 11
Joined: Mon Dec 31, 2018 9:32 pm

Re: Overclock eMac 1.25GHz to 1.5GHz without voltage increase

Post by MemoriMacfr » Fri Feb 15, 2019 3:09 pm

;) Interestingly, I am looking to boost a 9600 CPU card from 300 Mhz to 400 Mhz.

if you find info on these eve cards thank you. ;)

User avatar
superlions16
Posts: 2
Joined: Mon Dec 31, 2018 9:18 pm

Re: Overclock eMac 1.25GHz to 1.5GHz without voltage increase

Post by superlions16 » Tue Feb 19, 2019 7:49 pm

I did something similar, went from an eMac 1GHz to 1.25GHz. Works flawlessly.
Was it an ATI graphics model? I know those can go to 1.33GHz.
I am looking to boost a 9600 CPU card from 300 Mhz to 400 Mhz.
Refer to this: https://web.archive.org/web/20000418021 ... cpce1.html

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