Jim, yes the computer uses Intel.
Matt, the 2 old 2GB memory sticks are being replaced with 2 new 4GB for a total of 8GB.
Actually the computer belongs to my wife and the Apple Store recommended the upgrade.
I recall a few years ago when replacing memory, I was sent memory that was supposed to be
the correct upgrade but did not work.
In that case and on a different MacBook, when restarted would beep and not boot.
No harm done and reinserting the original memory, the computer once again worked.
I’m hoping this the case when I attempt the switch.