PowerColor PCS HD4730 512MB GDDR5 HDMI. Graphics processor: Radeon HD4730, Maximum resolution: 8192 x 8192 pixels, Maximum analog resolution: 1920 x 1200 pixels. Graphic adapter memory: 512 MB, Graphics adapter memory type: GDDR5, Memory bus: 128 bit. Interface type: PCI Express 2.0. DirectX version: 10.1, OpenGL version: 3.0