PowerColor AX4670 512MK3-PH. Maximum resolution: 2560 x 1600 pixels, Processor clock speed: 750 MHz, Graphics adapter RAMDAC: 400 MHz. Graphic adapter memory: 512 MB, Graphics adapter memory type: GDDR3, Memory bus: 128 bit. Interface type: PCI Express 2.0. DirectX version: 10.1, Shader model version: 4.1, OpenGL version: 2.0