Graphics Engine NVIDIA GeForce GTX780 Interface PCI Express x16 3.0 Memory Type GDDR5 Memory Size(MB) 3072 Memory Interface 384 bits Core Clock Speed(MHz) 863 (Boost Clock: 902) Memory Clock Speed(MHz) 6008 DVI Output 2 (Dual-link DVI-I x 1, Dual-link DVI-D x 1) HDMI-Output 1 (version 1.4a) DisplayPort 1 (version 1.2) HDCP Support Y HDMI Support Y Dual-link DVI Y Display Output (Max Resolution) 2560x1600 RAMDACs 400 DirectX Version Support 11.1 API (feature level 11_0) OpenGL Version Support 4.3 SLI Support Y 3-way SLI Y Card Dimension(mm) 267x98x39mm