Gigabyte Radeon X1650 Pro 256MB DDR3. Graphics processor: Radeon X1650 Pro, Maximum resolution: 2560 x 1600 pixels, Graphics adapter RAMDAC: 400 MHz. Graphics adapter memory type: GDDR3, Memory bus: 256 bit. DirectX version: 9.0c, Shader model version: 3.0, OpenGL version: 2.0. I/O ports: 2x DVI. External video modes refresh rate (max): 85 Hz