How do you tell if you OS is 32-bit or 64-bit Tags: Control Panel RAM Windows XP Last response: February 18, 2009 1:32 PM in Windows XP Share husker92 February 18, 2009 1:26:59 PM I want to upgrade my system and I want to use my existing XP, but only if it is 64-bit (to use 4 GB of RAM). How can I tell if my current version of XP is 32-bit or 64-bit? I actually have two XP versions, Home and Pro, both are the 2002 versions. I looked in "system" from the control panel and it just says XP Home, 2002 version, but does not say wether is it 32 or 64 bit. Thanks for looking. More about : bit bit | E-mail me updates | Report abuse Register or log in to remove husker92 February 18, 2009 1:32:42 PM Nevermind, I found this archived post which tells me how (using winver). http://www.tomshardware.com/forum/50426-45-finding-wind... Note to self - do search first!!!!!! | Report abuse Ask the community Publish Tom's Hardware>Forum>Windows XP>How do you tell if you OS is 32-bit or 64-bit> Related ressources: ForumNo OS loaded how to tell if I bought 32bit or 64bit ForumHow can I tell if I have 32bit or 64bit OS ? ForumHow do i install os 64-bit on my laptop when i have 32-bit on my laptop Forum32-Bit OS on 64-Bit CPU???? ForumE6550 32bit or 64bit OS ? Forumhttp://www.tomshardware.com/forum/ [...] ws-edition Forum4GB on a 32-bit OS vs 4GB on 64-bit OS ForumHow to change 32-bit to 64-bit in windows 7 ForumWhat specify 32bit and 64bit (CPU or MOBO)?? ForumInstalling 32bit when running 64bit ForumUpgrading from 32bit to 64bit Windows 8 Forum32bit to 64bit ForumIs a 64-bit Windows 7 quicker than 32-bit in itself, as an OS ? ForumHard drive from a 64-bit OS PC readable on a 32-bit PC ForumHow to Change win7 32bit to 64bit ForumWindows 7 32-bit to 64-bit CI.dll & clfs.sys ERROR ForumInstall a 32-bit Windows 7 OS to a 64-bit Laptop ForumWindows XP Pro 32bit to Win 7 Pro 64bit Upgrade ForumHow to can I check if my XP OS is a 32bit or 64bit ? ForumHELP!!! Please with Windows XP More resources Read discussions in other Windows XP categories Configuration Customization Drivers Security Video !