Hello. So I'm cleaning my computer. And this has been a big question. I have 2 sticks of 4 gb ram. And then another 2 sticks of ram that is 2 gbs each. So in total i have 4 sticks of ram. 2 different kits. And I know that is probably making my computer lab because I'm not using that sweet duel channel bandwith. But should I downgrade to 8gb? Or keep the slower 12 gb. Thanks!