Hi, I've got 16 gb of DDR4 ram at 3000mhz (2x8gb sticks) would be okay to add an extra 8 gb DDR4 stick in the third slot that is also 3000mhz (1x8gb) in a 4 slot motherboard and leave 1 slot empty? The extra stick has the exact same specs as the other 2 already in my build just a different brand (current 2 sticks are corsair, and extra stick is a gskill). My friend just had an extra stick laying around so I wanted to give it a try. I'm just wondering if there will be any repercussions using (3x8gb sticks) in a Motherboard with 4 ram slots?