Gigabyte GTX 750 GDDR5-1GB 2xDVI-I/DVI-D/2xHDMI OC Graphics Cards GV-N750OC-1GI Ultra Durable 2 Series OC Edition : Base 1059MHz/Boost 1137MHz 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