I just received my new/refurbished Mid 2015 macbook pro. I ordered the 2.5 Ghz model, but I received the 2.8Ghz. I'm not complaining about that. However I did order it with the 2GB AMD graphics card. But when I go to "About my Mac" It just shows the Iris integrated graphics card. So do I have the AMD card and how do I find out for sure. Thanks.