Hello all, a couple of months ago I wanted to "futureproof" (call it silly or unnecessary if you want) and got 2 Kingston hyperX 8gbs of RAM 16gbs in total. I had 2 g-skill ripjaws 2 x 4gbs which are laying around now. I was thinking since I replaced them and added the new ones in the blue slots, same place where the older ones were. Can I just add the old 2 x 4gbs of RAM on the black slots instead of them just laying around doing nothing or will it be worse or it doesn't work at all? I'm not that tech savvy, I know a few things but unless those other slots were meant for a different type of RAM like DDR2 instead of DDR3? I know I don't need them but since they're just staying there and I don't know anyone who might want to use them. My motherboard is ASUS P8Z77-V if that helps. Thanks in advance.