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. Modifications are done at your own risk.
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Some of the first generation Power Macs can be significantly boosted by overclocking their CPUs.
The DayStar PowerPro and Sonnet PrestoPPC upgrades made it possible to run a 68040-based Mac with a PowerPC 601 CPU, taking it to the next generation of CPU technology. The 80 MHz version can be overclocked to further improve performance, and it may be possible with the 100 MHz card as well.
Apple’s PowerBook Duo notebooks were very lightweight and very portable, but they are very limited in connectivity unless you can acquire a Duo Dock. The Duo 201, 230, and 280c can all be overclocked. If other Duos can be overclocked, we have not found reports.
The Sonnet QuadDoubler replaces the CPU in a Centris or Quadra Mac with one that runs twice as fast as the original ‘040 processor, and by overclocking the logic board, you may be able to achieve even better performance.
The Centris series of Macs only included three models: the 20 MHz Centris 610, the 25 MHz Centris 650, and the Centris 660av, which is identical to the Quadra 660av. The 660av is covered on Overclocking the Quadra AV Models.
Every Mac Quadra can be overclocked, although the method varies among models. The Centris/Quadra 660av and Quadra 840av are covered on a separate page.
Only two Mac LC models can be overclocked to improve performance. The LC II and LC III can be chipped; the original LC and LC III+ cannot be overclocked. You can also upgrade LC models using third-party accelerators the plug into the LC processor direct slot (PDS), which will bring more performance at a higher […]
Some of the old 68030 and 68040 PowerBooks can be overclocked to achieve improved performance. This page has information on the PowerBook 140, 145, 150, 160, 170, 180, and 520 and 520c.
Not all Macs can be over clocked, but three models in the Mac II lines can – the IIsi, Iivx, and “wicked fast” IIfx. These pages provide information on the maximum reliable speed, which may vary from one machine to the next.
Many Mac models can be “chipped” to run at a higher speed, but none of the compact Macs can. That said, some can be upgraded with third-party accelerators, so you’re not necessarily stuck with the original CPU speed – although finding those upgrades nowadays may be difficult.
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.
The iMac ClockUp page was originally posted at <http://www.bekkoame.ne.jp/~t-imai/imace1.html> and is no longer available there. We have adapted that information for the benefit of those who wish to overclock tray-loading iMacs. The original author is not known to us.
Last time we discussed overclocking your Macintosh, but we never really got into the nitty-gritty of actually changing the settings inside your computer, since this can be come a very complicated thing to do. This time we’re finally going to get into it and actually do some over clocking. Today we’ll be learning how to […]
One of the most common complaints computer owners have is that their computer is too slow. Unless you own a shiny new G4, you have probably had this complaint in one form or another throughout daily use of your computer.
Apple has done some remarkable things with its third generation Power Mac, the Beige G3s. (The first generation Power Macs used NuBus, and the second switched to PCI.) The motherboard is smaller than in earlier Power Macs, leaving room for one more drive in the same type of desktop case used for the 7200-7600.
