Gigabyte Radeon HD 5870. Graphics processor: Radeon HD5870, Maximum resolution: 2560 x 1600 pixels, Graphics processor family: AMD. Graphic adapter memory: 1024 MB, Graphics adapter memory type: GDDR5, Memory bus: 256 bit. Interface type: PCI Express 2.1. Shader model version: 5.0, OpenGL version: 3.1. Compatible operating systems: Windows Vista/7