upgrade with 2GB or 4GB memory?
My mid 2011 imac i5 has 4 memory slots - it came with 2 standard at 2GB each (total of 4GB RAM). My machine is running slow (I've upgraded to Sierra, although it was slow before), so am thinking of adding more memory. Should I add 2 x 2GB, or just 1 x 4GB?
Is this a good question?