MSI GeForce GTX 660 2GB Twin Frozr III OC. Graphics processor: GeForce GTX 660, Graphics processor family: NVIDIA, Processor clock speed: 1033 MHz. Graphic adapter memory: 2048 MB, Graphics adapter memory type: GDDR5-SDRAM, Memory bus: 192 bit. Interface type: PCI Express 3.0. Shader model version: 5.0, OpenGL version: 4.2, HDMI version: 1.4a. Supplementary power connectors: 1x 6-pin