Are you on Mac or PC?
Please, if you are under Windows, go to Control Panel/Device Manager/Display adapters, and share a screenshot:
Then go to Control Panel/Nvidia Control Panel, press the System Informations link, and share another screenshot:
If you are under Mac, please go to Apple
menu About this Mac
, click on the osx version to show the exact number, and share a screenshot.
Then go to System Preferences/CUDA
and share another screenshot, thanks.