Zotac GeForce 9800GT 1024MB. Graphics processor: GeForce 9800 GT, Maximum resolution: 2560 x 1600 pixels, Processor clock speed: 660 MHz. Graphic adapter memory: 1024 MB, Graphics adapter memory type: GDDR3, Memory bus: 256 bit. Interface type: PCI Express x16. DirectX version: 10.0, Shader model version: 4.0, OpenGL version: 2.0. Compatible operating systems: Vista, Windows XP