I'm looking into getting a computer for light gaming. Looking at the desktop Skylake processors the integrated graphics, even on the top end i7, have HD 530. With the mobile integrated graphics HD 530 seems to be pushed aside for the Iris Pro 580. Some of the other mobile processors also have Iris graphics but their desktop counterparts do not. Is Iris Pro 580 better than HD 530? If so does this mean the mobile integrated graphics are better than on desktops?