Gigabyte GTX 750 GDDR5-2GB 2xDVI-I/DVI-D/2xHDMI OC Graphics Card GV-N750OC-2GI 10 cm Large Fan Ultra Durable 2 Series OC Edition - Core Clock: Base 1059MHz / Boost 1137MHz(Standard Clock: Base 1020MHz / Boost 1085MHz) Features Dual-link DVI-I / DVI-D / HDMI2 Support PCI Express 3.0 x16 bus interface System power supply requirement: 400W Supports 4K at60Hz via two HDMI