INNO3D NVIDIA-Geforce-GTX 970OC 4GB-Video-Card Overclocked Dual DVI 3X Display Port 256bit, Support 4K, 4 Monitors GTX 970 OC Support 4 monitors,3 active monitors in 3D mode + 1 montor in 2D mode PCI-E3.0 X16 256 bit 4GB DDR5 NVIDIA SLI Ready Support 4K DVI-I HDMI 2.0 x1, DisplayPort 1.2 x3 Overclocked, boosted performance