Chipping the Mac

Chipping the Centris

Many Mac models can be "chipped" to run at a higher speed. These pages provide information on the maximum reliable speed. This may vary from one machine to the next. Chipping is not authorized by Apple. Any modifications you perform on your Mac may damage it and will void any warranty. Modifications are done at your own risk.

Be sure to visit Marc Schrier's Clock Chipping Home Page, the definitive resource on chipping the Mac.

Centris 650

The Centris 650 has a 12.5 MHz oscillator which runs the processor at 25 MHz. The max oscillator you can replace it with while keeping the serial ports functional is 14.7456 MHz, to run the processor at 29.4912 MHz. If you don't need to use the serial ports, you can put in a 20 MHz oscillator, to run the processor at 40 MHz.

If you perform the Centris 650 Serial Port Modification, you can make the computer run at much higher speeds. The maximum oscillator while keeping the serial ports functional will now be 20 MHz, to run the processor at 40 MHz. With an Apple PPC card installed, the max oscillator you can use is 19.44755 MHz, to run the 68040 at 38.8951 MHz, and the PPC card at 77.7902 MHz.

Info from Machine Specifics

Join us on Facebook!, follow us on Twitter, use our Google+ page, or read our RSS news feed

Links for the Day

Mac of the Day: Mac mini Core Solo, introduced 2006.02.28. The only Mac to use a Core Solo CPU, this model ran at 1.5 GHz, has integrated graphics, and includes a Combo drive
Support Low End Mac

Recent Deals

About LEM Support Usage Privacy Contact

Low End Mac is an independent publication and has not been authorized, sponsored, or otherwise approved by Apple Inc. Entire Low End Mac website copyright ©1997-2012 by Cobweb Publishing, Inc. unless otherwise noted. All rights reserved. Low End Mac, LowEndMac, and lowendmac.com are trademarks of Cobweb Publishing Inc. Apple, the Apple logo, Macintosh, iPad iPhone, iMac, iPod, MacBook, MagSafe, Mac Pro, Apple TV, and AirPort are registered trademarks of Apple Inc. Additional company and product names may be trademarks or registered trademarks and are hereby acknowledged.
Advice is presented in good faith, but what works for one may not work for all. Please report errors to .
LINKS: We allow and encourage links to any public page as long as the linked page does not appear within a frame that prevents bookmarking it.
Email may be published at our discretion unless marked "not for publication"; email addresses will not be published without permission, and we will encrypt them in hopes of avoiding spammers. Letters may be edited for length, context, and to match house style.
PRIVACY: We don't collect personal information unless you explicitly provide it. For more details, see our Terms of Use.

Custom Search

Follow Low End Mac on Twitter
Join Low End Mac on Facebook

Low End Mac Reader Specials

Macsales for the Right Mac Memory. Easy to Use Online Guide for no Guesswork! Mac Pro up to 128GB, iMac up to 32GB. MacBook/MB Pro, & Mac mini up to 16GB. - Macsales.com

Don't install Parallels to play poker online! Macpokeronline.com will show you how to download and play Poker on a Mac natively on your Mac in just minutes.

Affiliates

Amazon.com
The iTunes Store
PC Connection Express
Parallels Desktop for Mac
eBay