Gigabyte GeForce GT 640 2GB DDR3 PCI Express 3.0 2x DVI-D/D-SUB/HDMI Graphics Card GV-N640OC-2GI PCI-E 3.0 interface GIGABYTE latest ultra large 100mm Fan cooling design Features x2 DVI-D/D-SUB/HDMI with HDCP protection Ultra Durable 2 - Ultra Cooling - Low RDS(on) MOSFET Design - Low Power Loss - Ferrite Core Choke Design - Longer Life - All Solid Capacitor Design Gold plated HDMI for optimum signal transfer between connections Core Clock: 1050MHz/Memory Clock: 1800MHz Supports NVIDIA PhysX/CUDA/3D Vision Technology Minimum Recommended Power Supply 350W