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The processor socket type (or lack thereof) for each recent -- G3 and later -- Mac is listed below. Some models have processors than can be officially or unofficially upgraded and others do not. For complete specs on a particular system, click on the name of the Mac (left column). For all Macs that match a specific processor socket type -- courtesy of EveryMac.com's Ultimate Mac Sort -- click the processor socket of interest (right column).
Please also be mindful of asterisks, as these indicate that particularly important details (such as different "official" information) are provided on the complete specs page. Complete specs pages have links to upgrade instructions for many models as well.
If you are not sure which Mac you have, look it up by Order Number, Model Number, EMC Number, Model Identifier or Serial Number with EveryMac.com's Ultimate Mac Lookup feature. If you need help, refer to Mac Identification.
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