How to Find out if Your Mac Is a 32 or 64-Bit


It is important to know if your Mac's Intel processor is 32 or 64 bits so you can take advantage of the latest features offered by Mac OS X and so you can select programs that are appropriate for 32- or 64-bit Macs. According to Apple, 32-bit applications can only use 4 GB of RAM at a time, but 64-bit applications can use a theoretical 16 exabytes of RAM at a time. This allows your computer to operate more efficiently by speeding up calculations and tasks.

  • Click the "About this Mac" option on the "Apple" menu. Click the "More Info" option.

  • Click the "Hardware" option located under the "Contents" menu on the left side of the window.

  • Look at the "Hardware Overview" on the right side of the menu, and locate the "Processor Name."

  • Determine whether your processor is 32- or 64-bit by locating your processor's name from below:

    32-Bit Processors: Intel Core Solo and Intel Duo

    64-Bit Processors: Intel Core 2 Duo, Quad-Core Xeon, Dual-Core Xeon, Quad-Core Xeon, Core i3, Core i5 and Core i7

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  • Photo Credit Justin Sullivan/Getty Images News/Getty Images
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