Gainward GeForce GTX 680 Phantom 4GB. Graphics processor: GeForce GTX 680, Graphics processor family: NVIDIA, Processor clock speed: 1006 MHz. Graphic adapter memory: 4096 MB, Graphics adapter memory type: GDDR5-SDRAM, Memory bus: 256 bit. Interface type: PCI Express x16. Shader model version: 5.0, OpenGL version: 4.2, HDMI version: 1.4a. Supplementary power connectors: 1x 6-pin, 1x 8-pin