You may receive a computer as a gift, and want to find out whether the system is installed with a 32-bit or 64-bit (Microsoft labels them as x86 or x64) based operating system, which requires specifically built software application (See x86 or x64 OS). For computer or PC that has been installed long time ago and user forgets about its version, or has changed owner several times, and user no longer sure whether he or she is running a 32-bit or 64-bit (x32 or x64) version of Windows operating system, use following methods to determine and find out which version actually it’s.
Windows Vista
Method 1
- Click Start, then click on Run or Start Search.
- Type msinfo32.exe and then press Enter key.
- In “System Information”, review the value for the System Type item:
- For 32-bit editions of Windows, the value of the System Type item isx86-based PC.
- For 64-bit editions of Windows, the value of the System Type item isx64-based PC.
- Click Start, type system in the “Start Search” box, and then clicksystem in the “Programs” list.
- The operating system appears as follows:
- For a 64-bit version operating system: 64-bit Operating Systemappears for the “System type” under “System”.
- For a 32-bit version operating system: 32-bit Operating Systemappears for the “System type” under “System”.
- Click Start, type system in the “Start Search” box, and then clickSystem Information in the “Programs” list.
- The operating system appears as follows :
- For a 64-bit version operating system: x64-based PC appears for the “System type” under “Item”.
- For a 32-bit version operating system: x86-based PC appears for the “System type” under “Item”.
Microsoft Windows XP Professional
Method 1
- Click Start, then click on Run or Start Search.
- Type msinfo32.exe and then press Enter key.
- In “System Information”, review the value for the System Type item:
- For 32-bit editions of Windows, the value of the System Type item isx86-based PC.
- For 64-bit editions of Windows, the value of the System Type item isx64-based PC.
Method 2
- Click Start, click Run, type sysdm.cpl, and then click OK.
- Click the General tab. The operating system appears as follows:
- For a 64-bit version operating system: Microsoft Windows XP Professional x64 Edition Version
appears under System. - For a 32-bit version operating system: Microsoft Windows XP Professional Version
appears under System.
Note is a placeholder for a year.
Method 3
Method 3
- Click Start, click Run, type winmsd.exe, and then click OK.
- In the details pane, locate Processor under Item. Note the value.
- If the value that corresponds to Processor starts with x86, the computer is running a 32-bit version of the Windows operating system.
- If the value that corresponds to Processor starts with ia64 or AMD64, the computer is running a 64-bit version of the Windows operating system.
Microsoft Windows Server 2003
Method 1
- Click Start, click Run, type sysdm.cpl, and then click OK.
- Click the General tab. The operating system appears as follows:
- For a 64-bit version operating system: Microsoft Windows Server 2003 Enterprise x64 Edition appears under System.
- For a 32-bit version operating system: Microsoft Windows Server 2003 Enterprise Edition appears under System.
Method 2
- Click Start, click Run, type winmsd.exe, and then click OK.
- In the details pane, locate Processor under Item. Note the value.
- If the value that corresponds to Processor starts with x86, the computer is running a 32-bit version of the Windows operating system.
- If the value that corresponds to Processor starts with EM64T or ia64, the computer is running a 64-bit version of the Windows operating system.
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