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Just curious if anyone has tried maxing out the ram on a late 2009 Macbook (white, not pro) to 16GB running El Capitan or Yosemite?

Everymac's page states that the max is 8GB. Why not 16GB?

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  • Late to the party I know. I don't know actually. I got a late 2009 MacBook so I'll try tomorrow. Commented May 4 at 15:42
  • I seem to remember that some Macs would actually have performance problems if too much RAM was added.
    – benwiggy
    Commented May 4 at 17:52

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The chipset and processor may not support more RAM, even though you can physically put it in. You can always try. Weird behaviour and instability result from that.

One very reputable place for documenting which parts might work reliably above what Apple officially supports is OWC.

They agree with Apple on 8 GB being the upper limit for 2009 era Mac Book Pro.

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    Correct. While they can add more RAM physically, it won't recognize it if that amount is not supported (let alone the type). Commented Jun 3, 2018 at 0:18

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