ZOTAC AMP! Edition NVIDIA GeForce GTX 680 2 GB DDR5 2DVI/HDMI/DisplayPort PCI-Express Video Card ZT-60102-10P Chipset: NVIDIA GeForce GTX 680 RAMDAC: 400MHz Video Memory: 2 GB DDR5 Memory Clock: 6600MHz Memory Interface: 256-bit Bus: PCI-Express 3.0 x16 Max Resolution:?3840 x?2160