So i got 8GB ram in my pc atm 2x 4GB DDR3 pc-12800 which is 1600mhz ramspeed. I want to buy 2 more 4gb sticks to get to 16gb total ram. I never really though about this, but i need to take the same ramspeed? Or can i get 1333Mhz sticks? Thanks EDIT: got the answer already "yes, If you do then the ram will all run at 1333."