Graphics Engine NVIDIA GeForce GT 640 Bus Standard PCI Express 3.0 Video Memory DDR3 2GB Engine Clock 901 MHz Shader Clock 1802 MHz Memory Clock 1782 MHz ( DDR3 ) Memory Interface 128-bit Resolution D-Sub Max Resolution : 2048x1536 DVI Max Resolution : 2560x1600 Interface D-Sub Output : Yes x 1 DVI Output : Yes x 2 (DVI-D) HDMI Output : Yes x 1 HDCP Support : Yes Software ASUS Driver& Utilities GPU Tweak ASUS Features Super Alloy Power Dimensions 8.27 " x 4.92 " Inch