I'm thinking to upgrade memory on my iMac 27 3.2 GHz core i5 [late 2013]. It has currently built-in 8GB [4GB x 2] RAM. My questions are:
1] Can I upgrade RAM by simply adding 16GB [8GB x 2] in two empty ram slots? Or is it necessary to have 4GB x 2? Does it have to be 4GB… won't work with 8GB module? Is it that all modules have be with same capacity? Can I make it [4GB x 2 – built-in] + 8GB x 2 – to be added] 24 GB?
2] Does memory module designed for i7 work in i5?