An issue arising from correct (or incorrect) identification of the computer
model identifier, specification & build year/season, could be a cause of
the discrepancy about the total RAM upgrade capacity in certain models.
The i7 processor with 2.7GHz speed (per core) does not appear to relate
to a model identifier MacBook Pro6.1. In fact, the oldest model that has a
listing: 13-inch Early 2011, for 2.7 with an i7, also listed as MacBook Pro8.1
So according to MacTracker.ca database the partial specs you cite are not
correct; to be sure the RAM upgrade potential and parts match the MB/Pro
you'd need to double-check the product and be sure to communicate those
findings accurately to whomever you choose to purchase quality RAM from.
A quality professional establishment may ask you for the serial number so
as to match the upgrade or replacement part numbers most accurately.
So, if the core i7 processor in your MacBook Pro is the correct item, then
the other aspects of your identification need looking into. A MB/Pro 6.1
cannot use 16GB RAM, and that model identifier does not have 2.7GHz i7.
And from what I can tell, across the entire MacBook Pro line, the 2.7 w/ i7
can all use more than 8GB RAM. The newest models have soldered-in RAM
so that would not be user upgradeable. Some ship either w/ 8 or 16, in those.
http://mactracker.ca download database - a good reference for Apple specs
Also, early/late MacBook Pro 2.7 i7 upgrade spec RAM has a different set of numbers.
Last model with chips in slots: 204-pin PC3-12800 (1600 MHz) DDR3 SO-DIMM
Early model with chips in slots: 204-pin PC-10600 (1333 MHz) DDR3 SO-DIMM
Most recent models do not have slots, as RAM is fixed & not upgradable.
To correctly identify the computer and the parts needed is essential.
In any event...
Good luck & happy computing! 🙂
edited