A:Answer The power supply is a 600W PS. The MB is an MSI MB andcan hold 2 video cards. The only question is if the 600W can support the power draw of the second card. Check recommendations on the GTX 1070. The card in the machine can render all games in full definition. If you are wanting to play 3400x1200 at 4K, then you will need a second card, but again just check the power draw. There is only the MB, GTX1070, and the single 3TB drive currently drawing power.