| {{Not}}
| {{sit}}
| {{sit}} (USB 2.0 with update or SP4)<ref>{{citeCita web|titletitolo=Updated USB 2.0 Drivers Are Available in Windows 2000 Service Pack 4 (SP4)|url=http://support.microsoft.com/kb/819332|publishereditore=Microsoft Support|accessdateaccesso=February 5, febbraio 2012}}</ref>
| {{sit}}
| {{sit}}
| {{sit}}
| {{sit}} (solo l'edizione professionale)
| {{sit}} (USB 2.0 con aggiornamento o SP1+)<ref>{{citeCita web|lastcognome=Jones|firstnome=Don|titletitolo=USB 2.0 Support in Windows XP: High Speed at Last|url=http://www.microsoft.com/windowsxp/using/networking/learnmore/jones_02august05.mspx|publishereditore=Microsoft|accessdateaccesso=February 5, febbraio 2012|archiveurlurlarchivio=https://web.archive.org/web/20041231055938/http://www.microsoft.com/windowsxp/using/networking/learnmore/jones_02august05.mspx|archivedatedataarchivio=December 31, dicembre 2004|datedata=August 5, agosto 2002}}</ref>
| {{sit}}
| {{sit}}
| {{sit}}
| {{sit}}
| {{sit}} (USB 2.0)<ref>{{citeCita web|titletitolo=USB 2.0 and Windows Operating Systems|url=http://msdn.microsoft.com/en-us/windows/hardware/gg463432.aspx#EY|publishereditore=Windows Hardware Development|accessdateaccesso=February 5, febbraio 2012|datedata=May 11, maggio 2007}}</ref>
| {{sit}}
| {{sit}}
|-
| [[Windows XP 64-Bit Edition]]
| 700 MHz [[Itanium]]<ref name="xp64">{{citeCita web |url=https://support.microsoft.com/kb/306856 | titletitolo=Release Notes for Windows XP 64-Bit Edition Setup | publishereditore=Microsoft |accessdateaccesso=2 Septembersettembre 2014}}</ref>
| 1 GB<ref name="xp64"/>
| {{dunno}}
| 800 MHz
| rowspan="2" | 384 MB <small>(Starter)</small><br />512 MB <small>(altri)</small><br/>
<ref>{{citeCita web | url=http://www.microsoft.com/presspass/newsroom/windows/factsheets/WinVistaStarterFS.mspx | titletitolo=Windows Vista Starter Fact Sheet | publishereditore=Microsoft | datedata=December 2007 | accessdateaccesso=}}</ref>
| 2 GB
| 15 GB <br/>(~6.5 GB for OS)
|512 MB ECC
2 GB con Desktop Experience installata<ref>{{CiteCita web|url=https://docs.microsoft.com/en-us/windows-server/get-started/system-requirements|titletitolo=System Requirements|lastcognome=jaimeo|websitesito=docs.microsoft.com|languagelingua=en-us|access-dateaccesso=24 maggio 2018-05-24}}</ref>
|dipende dal ruolo
|32 GB
==Limiti della memoria fisica==
I limiti massimi della memoria fisica ([[RAM]]) che Windows può indirizzare variano a seconda della versione di Windows e tra le versioni di [[IA-32]] e [[x64]]
.<ref name="RAMlimitWindows">{{citeCita web |url=http://www.crucial.com/kb/answer.aspx?qid=3743 |titletitolo=What is the maximum amount of RAM the Windows operating system can handle? |publishereditore=Crucial |accessdateaccesso=February 5, febbraio 2012 |deadurlurlmorto=yes |archiveurlurlarchivio=https://web.archive.org/web/20110511193445/http://www.crucial.com/kb/answer.aspx?qid=3743 |archivedatedataarchivio=May 11, maggio 2011 |df= }}</ref><ref name="MicrosoftRAMlimitWindows">{{citeCita web|url=http://msdn.microsoft.com/en-us/library/aa366778(VS.85).aspx |titletitolo=Memory Limits for Windows Releases |publishereditore=Microsoft |accessdateaccesso=February 5, febbraio 2012}}</ref>
==={{Anchor|memlim-9x}}Windows 9x===
* Windows 95: 480 MB<ref>{{citeCita web|url=http://blogs.msdn.com/b/oldnewthing/archive/2003/08/14/54640.aspx |titletitolo=Windows 95 doesn't boot with more than 1GB of RAM |lastcognome=Chen |firstnome=Raymond}}</ref>
* Windows 98: 1 GB
* Windows Me: 1,5 GB
|