Sapphire HD 7770. Graphics processor: Radeon HD 7770, Maximum resolution: 4096 x 2160 pixels, Graphics processor family: AMD. Graphic adapter memory: 1024 MB, Graphics adapter memory type: GDDR5-SDRAM, Memory bus: 128 bit. Interface type: PCI Express 3.0. Shader model version: 5.0, OpenGL version: 4.2, HDMI version: 1.4a. Bundled software: AMD Catalyst Control Center