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The PowerMac G5 is a desktop computer first produced in 2003 by the Apple Corporation. This guide will review the repair process of an Apple PowerMac G5 model number A1047 EMC 2061 from 2004. It was discontinued in 2006 as part of the Intel switch first to developers then consumers.

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Dual CPU, configure it to run on one CPU

I have a dual CPU G5, after about be on for 5 to 10 minutes It locks up. Can it run on one CPU??

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You've probably already addressed the issue, so this is more for others:

If you're looking to disable one of the DP/DC "processors," you can install processor.prefPane (it installs automatically to system prefs) by:

1. Insert Mac OS X disc (can also access this via mounting 10.5.7 pkg update or later). On the Mac OS disc, click on "optional installs" and install XCode.pkg.

2. Open "Developer" Folder under Main HDD Menu... open "extras" and then submenu item "PreferencePanes".

3. Look for processor.prefPane and drag that file (10.5.7 or later) to System/Library/PreferencePanes. Once installed, you can click on Sys Preference and there should be a new preference pane item called "processor". Click on it, and there are options to select dual or single processors, a processor visual palette window, and a "nap option nullify".

NOTE: In <= 10.5.6, you could just double click the prefPane when you found it in the developer folder.


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Depending on the model, in Early Dual processor Models, you could remove one of the Processors's if you think theres something wrong with it. Some models have dual, or Quad Processors all mounted to a block. so removing one is impossible.

on another note, the processor is probably the last thing to be bad on a Powermac G5. test more obvious reasons for a machine locking up, RAM, Hard drive, or Software Problems.

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or, you could try re-seating the CPU, that will resolve any eerrors caused by a bad connection from the CPU to the logic board, also known to cause freezes, lockups, etc.

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John Stemple will be eternally grateful.
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