I would like to increase the RAM in my iMac (it currently holds the standard 2 x 4GB cards with 2 empty slots). I have found some 16 GB cards for a good price and would like to increase the RAM to support my graphics programs. I know that it can only support 32GB (as per apple website).
Do you have to use all 4 slots if you increase the RAM?
Will it still work if I remove the 2 x 4GB cards and replace with 2 x 16GB cards?
Can I add just one 16GB card and leave one slot empty?