ASUS AMD Radeon HD 7970 with GPU Tweak and PCIe 3.0 Bus Graphics Cards HD7970-3GD5 Interface: PCI Express 3.0 x16 (Compatible with PCI Express 2.0), Core Clock 925MHz, 2048 Stream Processors. Effective Memory Clock 1375MHz (5.5Gbps) Memory Size 3GB Memory Interface 384-bit Mem Ports: HDMI 1 x HDMI Display Port 2 x Mini Display Port, 1 x DVI HDMI supports a Max Resolution of 4096 x 2160, DL-DVI supports a Max Resolution of 2560 x 1600 with Eyefinity Support and CrossFireX, Cooler With Fan / Dual-Link DVI Supported / HDCP Ready Supply Requirements: six pin connector and eight pin connector