MacOS Sierra

The MacOS Sierra Compatibility List | OSXDaily

• MacBook Pro (2010 and later)
• MacBook Air (2010 and later)
• Mac Mini (2010 and later)
• Mac Pro (2010 and later)
• MacBook (Late 2009 and later)
• iMac (Late 2009 and later)

This list of supported Macs is offered directly from Apple, shown during the MacOS Sierra debut presentation at WWDC 2016 conference. The still from that presentation is shown below with the same compatibility list:

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