Sparkle Technology GeForce GTX 285. Graphics processor: GeForce GTX 285, Maximum resolution: 2560 x 1600 pixels, Processor clock speed: 648 MHz. Graphic adapter memory: 1024 MB, Graphics adapter memory type: GDDR3, Memory bus: 512 bit. Interface type: PCI Express 2.0. Shader model version: 4.0, OpenGL version: 2.1