re: How big a RAM can be used for a 32-bit OS Thursday, July 22, 2010 at 1:25 am Windows XP Annoyances Discussion Forum Posted by MartinM (7536 messages posted) A byte is an addressable entity, so a 32 bit addressing system can address 4 billion of them. If RAM were addressed bit by bit (which it isn't), you would be right that only 4 billion bits could be addressed. BTW if you want to know where the 2GB of RAM went (32 bits systems can address 4GB but XP only uses 2GB maximum) have a read of this: http://support.microsoft.com/kb/2267427 Written in response to: re: How big a RAM can be used for a 32-bit OS (deepblue: Wednesday, July 21, 2010 at 11:30 pm) There are presently no replies to this message. All messages in this thread [show all] How big a RAM can be used for a 32-bit OS (Ronobir Ray: Wed, Jul 21, 2010, 4:05 am) re: How big a RAM can be used for a 32-bit OS (William: Wed, Jul 21, 2010, 4:30 am) re: How big a RAM can be used for a 32-bit OS (MartinM: Wed, Jul 21, 2010, 4:52 am) re: How big a RAM can be used for a 32-bit OS (AndyP: Wed, Jul 21, 2010, 8:11 am) re: How big a RAM can be used for a 32-bit OS (Ronobir Ray: Wed, Jul 21, 2010, 8:26 am) re: How big a RAM can be used for a 32-bit OS (AndyP: Wed, Jul 21, 2010, 9:38 am) re: How big a RAM can be used for a 32-bit OS (MartinM: Wed, Jul 21, 2010, 12:30 pm) re: How big a RAM can be used for a 32-bit OS (deepblue: Wed, Jul 21, 2010, 11:30 pm) re: How big a RAM can be used for a 32-bit OS (MartinM: Thu, Jul 22, 2010, 1:25 am) re: How big a RAM can be used for a 32-bit OS (Ronobir Ray: Fri, Jul 23, 2010, 8:52 am) re: How big a RAM can be used for a 32-bit OS (AndyP: Fri, Jul 23, 2010, 7:37 pm) Reply or follow-up to this message Search this forum Start a new thread on a different subject Report abuse of the forum Return to the Windows XP Discussion Forum