Powered by NVIDIA GeForce GTX 660 GPU Integrated with the first Graphics Processing GeForce GTX 660 I/O Dual-link DVI-I*1 DVI-D*1 DisplayPort*1 HDMI*1 Core Clock Base clock: 1033 MHz Boost clock: 1098 MHz (standard Base clock: 980 MHz Boost clock: 1046 MHz) Process Technology 28 nm Memory Clock 6008 MHz Memory Size 2048 MB Memory Type GDDR5 Memory Bus 192 bit Card Bus PCI-E 3.0 Digital max resolution 4096 X 2160(via a single HDMI connector or DisplayPort and not supported with two DVI connectors) Multi-view 4 Card size H=43, L=256, W=131 mm PCB Form ATX DirectX 11.2 OpenGL 4.4 Recommended PSU 450 W Analog max resolution 2048 x 1536