Gigabyte nVidia GeForce GT520 1 GB DDR3 DVI/VGA/HDMI Low Profile PCI-Express Video Card (GV-N520OC-1GI) Chipset: GeForce GT520 Engine Clock: 830 MHz Video Memory: 1GB DDR3 Memory Clock: 1800MHz Memory Interface: 64-bit Bus: PCI-Express 2.0 x16 RAMDAC: 400 MHz Max. Resolution: 2560 x 1600 Connectors: DVI, VGA, HDMI Thermal: Fansink Support Microsoft Window 7 Support nVidia PhysX Technology Support nVidia CUDA Technology Support HDCP - High-bandwidth Digital Content Protection Support Microsoft DirectX 11 and OpenGL 4.1 Minimum 300W or greater system power supply Low Profile design RoHS Compliant