I have a Mac Mini (end 2014) 16 DDR3 memory go, 3GHz Intel Core I7 ... with a "card" Intel graphic Iris 1536 MB At MacMini can not do better. Now this "graphics card" does not manage above 60 Hz. So the 144 hz advertised can not be displayed. Whether HDMI or DVI: 60 hz and nothing else ... not even 100 Hz or 80 Hz, 60 Hz and basta! For MacMini, it is understandable. So I plugged this screen on a PC with a graphics card more punchy: Nvidia Quadro FX 1700. Good! it's no lightning, but I hoped still up to 80 hz. Well, no: 60 hz too ... and nothing else. So in short: to enjoy good, maximum, this screen requires a gammer graphics card. Nevertheless, this is an excellent screen! ... I'm very happy.