Gigabyte GTX 770 GDDR5-4GB 2xDVI/HDMI/DP OC WINDFORCE 3X Graphics Card (GV-N770OC-4GD) Ultra Durable VGA Components: GPU Temperature 5%-10% Down - Overclocking Capability 10%-30% Up - Power Switching Loss 10% - 30% Down WINDFORCE 3X 450W Cooling systen Features Dual-link DVI-I/ DVI-D / HDMI / DisplayPort Power requirement : 600W (with one 6-pin and one 8-pin external power connectors)