re: How much RAM to add?
Monday, November 2, 2009 at 1:15 pm
Windows XP Annoyances Discussion Forum
Posted by MartinM
(5127 messages posted)
The limit is to do with the address space architecture of XP and is unaffected by
the number of cores supporting it.
What the BIOS registers, and what XP sees in My Computer, are not the same as how
much RAM XP can utilise for itself and applications. I am only guessing, but maybe
if your video card is using 500MB of RAM the BIOS can see that plus the 2GB that
XP can use ?
Anyway, if you'd like to read this up the best source article I know, written by
Microsoft engineers for hardware developers, is here.
So now you can see how the confusion arises:
"The maximum amount of memory that can be supported on Windows XP Professional
and Windows Server 2003 is also 4 GB".
BUT
"The virtual address space of processes and applications is still limited to
2 GB".
Translation: XP is aware of up to 4GB but in practice can only use 2GB (or 3GB if
the applications are written appropriately - most aren't).
- Written in response to:
- re: How much RAM to add? (MikeB: Monday, November 2, 2009 at 12:29 pm)
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