MenuMeters

Nice little discovery for those who (as I am) are attempting to eke out every last drop of horsepower from an aging MacBook Pro:

http://www.ragingmenace.com/software/menumeters/

The package comes with CPU, disk activity, memory and network usage meters. Setup is a breeze and the meters live unobtrusively in the menu bar (hence the clever name). It is released as open source freeware - please consider donating if you find it useful.

Very nice tool.

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