For those people who don't know, any AMD GPU that is HD 7000 series or up will have mantle preinstalled. This means you'll have API software that is not only better than DX12 but will work with any version of windows. So you don't have to upgrade if you don't want to. I have an i3 CPU and have found that mantle has reduced CPU demand by over 60% particularly when all of my RAM was used up with many tabs open in IE. And the added advantage with mantle is that it comes with quarterly updates whereas with DX you have to wait for the next version of windows and that could be years !