CLUB3D HD4670. Maximum resolution: 2560 x 1600 pixels, Processor clock speed: 750 MHz, Graphics adapter RAMDAC: 400 MHz. Graphics adapter memory type: GDDR4, Memory bus: 128 bit, Memory clock speed: 1800 MHz. Interface type: PCI Express 2.0. DirectX version: 10.1, OpenGL version: 3.2. Minimum system requirements: CD-ROM, Minimum RAM: 1024 MB, Minimum system power supply: 400 W