Gigabyte Radeon HD 7970 WF 3X GHz Edition 3GB GDDR5 PCI-Express 3.0 DVI-I/HDMI/2x mini-DP Crossfire Ready Graphics Card GV-R797TO-3GD Ultra Durable VGA Components - GPU Temperature 5%-10% Down - Overclocking Capability 10%-30% Up - Power Switching Loss 10% - 30% Down Equipped with WINDFORCE 3X Triple Fan Heatsink w/ Triangle Cool technology Features DVI-I / HDMI / 2x mini-Displayport outputs with HDCP protection Core Clock: 1100MHz - Memory Clock: 6000MHz Recommended minimum Power Supply 600W or greater with one 8pin and one 6pin power connectors Supports AMD Eyefinity / Eyespeed / CrossfireX / Avivo HD Technologies