Memory upgrade for imac 27 late 2013
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MEMORY UPGRADE FOR IMAC 27 LATE 2013 INSTALL
If your iMac doesn’t start up or turn on after you install additional memory, check each of following, then try to start your iMac again.
![memory upgrade for imac 27 late 2013 memory upgrade for imac 27 late 2013](https://cdn.cultofmac.com/wp-content/uploads/2012/12/imacramreplacement.jpg)
![memory upgrade for imac 27 late 2013 memory upgrade for imac 27 late 2013](https://lfgss.microco.sm/api/v1/files/009099de2926877e8a9396799508723cc665a760.jpg)
![memory upgrade for imac 27 late 2013 memory upgrade for imac 27 late 2013](https://images-na.ssl-images-amazon.com/images/I/61atmfMdHpL._AC_SL1500_.jpg)
If your DIMMs are mixed in capacity, minimize the capacity difference between Channel A (slots 1 and 2) and Channel B (slots 3 and 4) when possible.