Zotac GeForce 8600 GT ZONE Edition Passive. Graphics processor: GeForce 8600 GT, Maximum resolution: 2560 x 1600 pixels, Processor clock speed: 540 MHz. Graphic adapter memory: 256 MB, Graphics adapter memory type: GDDR3, Memory bus: 128 bit. Interface type: PCI Express. Shader model version: 4.0, OpenGL version: 2.0