Sapphire RADEON HD 2600PRO 256 MB. Graphics processor: Radeon HD2600 Pro, Maximum resolution: 2560 x 1600 pixels, Graphics processor family: AMD. Graphic adapter memory: 256 MB, Graphics adapter memory type: GDDR3, Memory bus: 256 bit. Interface type: PCI Express. Shader model version: 4.0, OpenGL version: 2.0. Compatible operating systems: Microsoft Windows 98SE/Me/2000/XP