Gigabyte GV-RX24P256H. Graphics processor: Radeon HD2400 Pro, Maximum resolution: 2560 x 1600 pixels. Graphic adapter memory: 256 MB, Graphics adapter memory type: DDR2, Memory bus: 64 bit. Interface type: PCI Express. Shader model version: 4.0, OpenGL version: 2.0. Compatible operating systems: Windows 2000/XP/Vista