How to Check if Your Computer Is 64 Bit

This article explains how to determine if your Computer/Server runs the 32-bit or 64-bit version of Windows. EditMethod 1 of 3: In Windows 7/Vista/Server 2008/R2 1(1) Click on the Start Button:(2) Type 'System' in the Start Search box, and then (3) click "System" in the Programs list. 2Under "System" window it will either state "32-bit Operating System" or "64-bit Operating System." EditMethod 2 of 3: In Windows XP/2000/Server 2003 1Press the WIN+R keys (Windows key and R).Type the following: sysdm.cpl and click OK. 2Click on "System Summary":Under "System Type" it will either state "x86" if a 32-bit version of Windows is installed, or "EM64T" if a 64-bit version of Windows is installed. EditMethod 3 of 3: On MacOsX 1Launch Terminal app (see Applications/Utilities) 2At prompt, type the following:"uname -a" (without the quotes) (note the blank space between "uname" and "-a" strings. 3The terminal will display two lines of text.At the end of the 2nd line, you'll find something like either *.RELEASE_I386 i386 ; the latest "i386" means that you're running 32bits kernel *.RELEASE_X86_64 x86_64 ; the latest "x86_64" means that you're running 64bits kernel