Hey everybody , I am replacing my 2x4 ( 8gb) ddr3 1333mhz ram one stick is of Samsung & one is of Corsair value with 2x8 (16gb) ddr3 1600mhz Corsair vengeance ram my motherboard is Gigabyte H81M-S2PV so my question is will I run into any comparability issues? or just plug in the new ram & boot up the computer? ( I am getting one 8gb stick right now & I'll sell the two 4gb sticks & add some money & buy another 8gb stick)