I just bought a 2nd hand Desktop PC, it has 4 RAM slots and came with 2 x 8gb 3200 cards, I have another same speed 2 x 16gb cards, if I'm going to put them in as well, is there any better option of where to place them i.e. the 2 x 8b next to each other or spaces between them i.e. 1 x 8 then 1 x...