Gigabyte AMD Radeon HD 7970 OC 3GB GDDR5 DVI-I/HDMI/2x Mini-Displayport PCI-E 3.0 Graphics Card GV-R797OC-3GD Ultra Durable VGA materials - GPU Temperature 5%-10% down - Overclocking Capability 10%-30% Up - Power Switching Loss 10%-30% down. WINDFORCE 3X with "Triangle Cool" Technology for the absolute best cooling performance at whisper silent operation. Factory Overclocked Edition: Core Clock: 1000MHz (Std 925MHz) Supports PCI-Express 3.0 Interface; Supports AMD CrossFire, Avivo HD, Eyefinity 2.0, and EyeSpeed technologies. Features DVI-I/HDMI/2x mini-Displayport outputs with HDCP protection. Minimum Recommended Power System Power Supply unit 550W.