Diamond Viper ATI  X1650PRO PCIE  512MB Video Card Powered by the ATI RADEON X1650 PRO graphics processing unit (GPU) Compatible with PCI-Express x16 systems 512MB of on-board video memory Capable of connecting to DVI, VGA, component, S-Video and composite display devices Optimize your gaming performance by connecting two cards together on CrossFire-compliant motherboards