Zotac ZT-50403-10L nVidia GeForce GTX550 Ti 1GB DDR5 2DVI/2HDMI/Displayport PCI-Express Video Card Chipset: GeForce GTX550 Ti Engine Clock: 900 MHz Video Memory: 1GB DDR5 Memory Clock: 4100 MHz Memory Interface: 192-bit RAMDAC: 400 MHz Connectors: Dual DVI; 2x HDMI; Displayport Bus: PCI-Express 2.0 x16