msi z97 gaming 5 LGA1150, intel z97, ddr3 1600, 3xPCI-e, vga, dvi, hdmi. (motherboard), i5-4690k @ 3.5Ghz CPU, GTX 970 GPU, I thought about upgrading by simply switching the graphic card to an rtx 2070, will that work considering my other specs? PSU is 620w.