Users only need to download the Tableau Public client. The technical specifications for Tableau Public mirror those of Tableau Desktop Personal and are listed on the Tableau website at http://www.tableau.com/products/desktop.
According to Tableau system requirements, PC users require the following minimum specifications:
Microsoft Windows Vista SP2 or newer (32-bit and 64-bit)
Microsoft Server 2008 R2 or newer (32-bit and 64-bit)
Intel Pentium 4 or AMD Opteron processor or newer (SSE2 or newer required)
2 GB memory
750 megabytes minimum free disk space
Internet Explorer 8 or newer
And Mac users need the following specifications in their system: