10.5: Monitor and disable CPU cores in 10.5

Nov 06, '07 07:30:00AM

Contributed by: semaja2

If you would like to see how well your computer runs with only one CPU core, or possibly save power by turning one or more off when not in use, there is a wonderful utility named CPUPalette located in /Library » Application Support » HWPrefs

It will provide you with CPU usage information, as well as let you disable one or more cores.

Update: As noted in the comments, this app comes from the Developer Tools, which you'll find in the Optional Installs folder on the Leopard DVD. It does not exist, at least on my machine, in 10.4 (there's an app called CHUD that will do it, but this is different).

[robg adds: In playing with this little app, I discovered a semi-hidden settings mode: just click the oblong "options" widget in the top right of the menu bar, and a settings area will appear at the top of the window (click the image for the full-size version). You can control transparency, sample interval and history, switch from an area to a bar chart, and add a background grid. To quit the app (drag it to your dock, sidebar, or toolbar for fast future access), just click the red close button, as there aren't any menus in CPUPalette.]

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