Gainward 8400GS 512MB. Graphics processor: GeForce 8400 GS, Maximum resolution: 1920 x 1200 pixels, Processor clock speed: 567 MHz. Graphic adapter memory: 512 MB, Graphics adapter memory type: DDR2, Memory bus: 64 bit. Interface type: PCI Express 2.0. OpenGL version: 2.1. Compatible operating systems: Microsoft Windows 2000, XP, Vista