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I just upgraded my 13" mid-2012 MBP from the stock 4GB to 16GB, using 1 Crucial 16GB modules. On checking the system profiler, I only see one 8GB module recognized; instead of 16GB, the second port shows as empty, as I can't recall leaving the original 4GB in the port.
The MBP is quite fast, but appears I'm not getting the desired speed of 16GB.
Please advise
Lajafowokan wrote:
I just upgraded my 13" mid-2012 MBP from the stock 4GB to 16GB, using 1 Crucial 16GB modules. On checking the system profiler, I only see one 8GB module recognized; instead of 16GB, the second port shows as empty, as I can't recall leaving the original 4GB in the port.
The MBP is quite fast, but appears I'm not getting the desired speed of 16GB.
Please advise
You can try re-seating the RAM if one of the banks is not recognized.
MacBook Pro: How to remove or install memory - Apple Support
you are testing for both bad RAM or bad bank—
one stick at a time in each bank, If the RAM sticks prove to work individual—and banks work individually.
Other known issues are:
or RAM banks slightly distorted/out of flat (use shims)
Best to have matched pairs, however you can run on just one bank if necessary.
or replace bad RAM—again matched pairs (manufacturer/ same size ie 8 + 8/ exact specs)
Best to buy RAM from reliable source with the exact specs.
Usually a lifetime guarantee on RAM from third party source like:
https://eshop.macsales.com/shop/apple/memory/
Lajafowokan wrote:
I just upgraded my 13" mid-2012 MBP from the stock 4GB to 16GB, using 1 Crucial 16GB modules. On checking the system profiler, I only see one 8GB module recognized; instead of 16GB, the second port shows as empty, as I can't recall leaving the original 4GB in the port.
The MBP is quite fast, but appears I'm not getting the desired speed of 16GB.
Please advise
You can try re-seating the RAM if one of the banks is not recognized.
MacBook Pro: How to remove or install memory - Apple Support
you are testing for both bad RAM or bad bank—
one stick at a time in each bank, If the RAM sticks prove to work individual—and banks work individually.
Other known issues are:
or RAM banks slightly distorted/out of flat (use shims)
Best to have matched pairs, however you can run on just one bank if necessary.
or replace bad RAM—again matched pairs (manufacturer/ same size ie 8 + 8/ exact specs)
Best to buy RAM from reliable source with the exact specs.
Usually a lifetime guarantee on RAM from third party source like:
https://eshop.macsales.com/shop/apple/memory/
Thanks, one of the RAM wasn't seated in the slot.
13" mid-2012 MBP, upgraded to 16GB, but only one port recognized as 8GB
