CLUB3D VGA Radeon HD4850 512MB DDR3 2xDVI PCIe. Graphics processor: Radeon HD4850, Maximum resolution: 2560 x 1600 pixels, Processor clock speed: 625 MHz. Graphic adapter memory: 512 MB, Graphics adapter memory type: GDDR3, Memory bus: 256 bit. Interface type: PCI Express x16. DirectX version: 10.1. Compatible operating systems: Windows XP Windows MCE Windows XP64 Windows VISTA 32bit Windows VISTA 64bit