Graphics Processing Unit GeForce GTX 660 Ti Interface PCI Express x16 3.0 Core Clock Speed (MHz) 941 (Boost Clock:1019.5 ) Memory Size (MB) 2048 Memory Type GDDR5 Memory Interface 192 bits Memory Clock Speed (MHz) 6008 DVI Connectors 2 (Dual-link DVI-I x 1, Dual-link DVI-D x 1) HDMI Connectors 1 (version 1.4a) DisplayPort 1 (version 1.2) HDCP Support Y RAMDAC speed (MHz) 400 DirectX Version Support 11.1 API (feature level 11_0) OpenGL Version Support 4.2 Card Dimension(mm) 245x98x39 mm Card Weight 597g