HIS HD 6990. Graphics processor: Radeon HD6990, Maximum resolution: 2560 x 1600 pixels, Graphics processor family: AMD. Graphic adapter memory: 4096 MB, Graphics adapter memory type: GDDR5-SDRAM, Memory bus: 256 bit. Interface type: PCI Express x16. Shader model version: 5.0, OpenGL version: 4.1. Depth: 320 mm, Height: 128 mm, Width: 42 mm