Gigabyte GTX650 GDDR5-4GB 2xDVI/HDMI/D-SUB OC Graphics Card GV-N650OC-4GI 10 cm Large Fan with Triangle Cool Heatsink Technology Ultra Durable 2 Series OC Edition - Core Clock: 1110 MHz (Standard Clock: 1058MHz) Features Dual-Link DVI-D2 / HDMI / D-Sub Support PCI Express 3.0 x16 bus interface System power supply requirement: 400W