Gainward HD 4870 512MB. Graphics processor: Radeon HD4870, Maximum resolution: 2560 x 1600 pixels, Graphics adapter RAMDAC: 400 MHz. Graphic adapter memory: 512 MB, Graphics adapter memory type: GDDR5, Memory bus: 256 bit. Interface type: PCI Express 2.0. Cooling type: active. DirectX version: 10.1, Video formats supported: MPEG-1, MPEG-2 & DivX