<page_title> Windows Vista editions </page_title> <section_title> Comparison chart </section_title> <table> <cell> Maximum RAM on x64 <col_header> Features </col_header> <col_header> Licensing scheme </col_header> <col_header> Maximum RAM on IA-32 </col_header> </cell> <cell> 8 GB <col_header> Home Basic1,2 </col_header> <row_header> Maximum RAM on x64 </row_header> </cell> <cell> 16 GB <col_header> Home Premium2 </col_header> <row_header> Maximum RAM on x64 </row_header> </cell> <cell> 128 GB <col_header> Business1,2,3 </col_header> <row_header> Maximum RAM on x64 </row_header> </cell> <cell> 128 GB <col_header> Enterprise1,2 </col_header> <row_header> Maximum RAM on x64 </row_header> </cell> <cell> 128 GB <col_header> Ultimate2 </col_header> <row_header> Maximum RAM on x64 </row_header> </cell> </table>
The Windows Vista 64-bit edition of Home Basic supports 8 GB of RAM, Home Premium supports 16 GB, and the Business, Enterprise, and Ultimate editions support 128 GB of RAM.