re: How much RAM to add?
Tuesday, November 3, 2009 at 6:14 am
Windows XP Annoyances Discussion Forum
Posted by MikeB
(28 messages posted)
Many thanks for that advice. I was so impressed with the dramatic increase in speed
after adding 2Gb of RAM that I had been thinking of adding more. In view of what
you say, I shall now forget about this.
On Monday, November 2, 2009 at 1:15 pm, MartinM wrote:
>
>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? (MartinM: Monday, November 2, 2009 at 1:15 pm)
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