Is a graphics card needed for Revit when the CPU is an intel i7 ?

I am building a computer from components for the purpose of using revit architecture.

I think intel i7 have its own in build graphics. I am not sure if I need to buy a separate graphics card as well.

Thank you very much for your time and help.

Faithfully,

Nicholas

P.S. Are graphic cards and video cards the same thing?