paolo@PaoloPC:~$ dpkg -l | grep nvidia 
ii  nvidia-346                                           346.59-0ubuntu1                            amd64        NVIDIA binary driver - version 346.59
ii  nvidia-opencl-icd-346                                346.59-0ubuntu1                            amd64        NVIDIA OpenCL ICD
ii  nvidia-prime                                         0.8.1                                      amd64        Tools to enable NVIDIA's Prime
ii  nvidia-settings                                      346.59-0ubuntu1                            amd64        Tool for configuring the NVIDIA graphics driver
paolo@PaoloPC:~$