Zotac GeForce GT 630 2GB GDDR3 PCI Express 2.0 DVI HDMI VGA Passive Cooling Graphics Card ZT-60409-20L NVIDIA GeForce GT 630 GPU384 processor cores 64-bit memory bus Engine clock: 902 MHz, Memory clock: 1800 MHz PCI Express 2.0 (compatible with 1.1) DVI (Up to 2560 x 1600)HDMI 1.4a (with audio (8-channel)) VGA Triple simultaneous display capable HDCP compliant ED 480p HD 720p HD 1080i Full HD 1080p NVIDIA GeForce driver Microsoft DirectX 11.1 (feature level 11_0) OpenGL 4.3 Microsoft Windows 7/8 x86/x64