NVIDIA GeForce GT 520 1GB DDR3 PCI Express (PCI-Express) DVI Low Profile Video Card w/HDMI & HDCP Support NVIDIA GeForce GT 520 1GB GDDR3 PCI Express Low Profile Video Card General Features: Low profile PCB NVIDIA GeForce GT 520 graphics processing unit (GPU) 48 CUDA cores 810 MHz core clock 1620 MHz shader clock 1 GB GDDR3 memory 64-bit memory interface 897 MHz memory clock PCI Express 2.0 x16 interface Microsoft DirectX 11 support OpenGL 4.1 support