How do I tell if I have 32 bit or 64 bit

http://www.computing.net/windowsxp/wwwboard/forum/74497.html 32 bit ---from another post--- that would be 32 bit. only the newest CPU's are running 64bit. (Bits = the maximum data size that can be processed in 1 CPU clock cycle) Thats the reader's digest version. The 64-bit chips Apple's IBM-made G5 AMD's Athlon 64 Intel's Itanium server chip The 32-bit chips Pentium 4 the Athlon XP the Motorola-made G4

Sandy, Below is the most comprehensive answer to your question I found on another forum. According to the MS XP Newsgroups, this question is being asked almost as much as questions about the Blaster virus lately. Here are a few ways that you can tell whether you have the 32 Bit or 64 Bit version. ---------------------- Right click My Computer, click Properties. If you have a 64 bit computer, *it will say 64 bit on that page*. Also 64 bit is available for Windows XP Pro *not Windows XP Home*. ---------------------- Go to Kelly's Korner XP site at the link below and scroll all the way down to: Do you have a 32 or 64 bit in XP? You'll see 2 downloads, 1 for an .exe file and 1 for a .vbs file that will tell you. Here's the link. http://www.kellys-korner-xp.com/xp_tweaks.htm NOTE: I can not personally vouch as to just what the .exe file will do, but I would trust it from her site. I did open the .vbs file and it is quite safe to run. This manual method will accomplish the same as the .vbs file above ---------------------- Manual:method Go to Start/Run/CMD and type in: systeminfo. System Type will probably read: X86 Or go to Start/Run/Regedit and navigate to this key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment. In the right pane: Processor_Architecture should read: x86 for 32 bit. You *cannot* buy XP 64-bit edition "off the shelf" in *any* software store, or off of *any* retail outlet. If you're running 64-bit WinXP, at the *minimum* you're using it in a professional engineering or scientific environment, and most likely have an IT department taking care of these things for you. I hope this helps to clear this up. HTH Tufenuf