Sapphire HD5750 1GB GDDR5 PCIE. Graphics processor: Radeon HD5750, Maximum resolution: 2560 x 1600 pixels, Processor clock speed: 700 MHz. Graphic adapter memory: 1024 MB, Graphics adapter memory type: GDDR5, Memory bus: 256 bit. Interface type: PCI Express 2.1. OpenGL version: 3.2, HDMI version: 1.3. Compatible operating systems: Windows 7