NVIDIA GeForce GT 420 1GB DDR3 PCI Express (PCI-E) DVI/VGA Video Card w/HDMI & HDCP Support NVIDIA GeForce GT 420 1GB DDR3 PCI Express Video Card General Features: NVIDIA GeForce GT 420 graphics processing unit (GPU) 48 CUDA cores 700 MHz core clock 1400 MHz shader clock 1 GB DDR3 memory 128-bit memory interface 800 MHz memory clock PCI Express x16 2.0 interface Microsoft DirectX 11 w/Shader Model 5.0 Open GL 4.1 support NVIDIA CUDA Technology