VisionTek Radeon HD6770 1 GB GDDR5 HDMI, DVI, VGA Graphics Card (900368) 76.8 GB/s memory bandwidth (maximum) TeraScale 2 Unified Processing Architecture, 800 Stream Processors PCI Express 2.1 x16 bus interface Full DirectX 11 support Shadier Model 5.0 Direct Compute 11 Programmable hardware tessellation unit HDR texture compression