Re: XP Pro & VISTA Memory Usage?

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"Tom" <yahoo@xxxxxxxxxxxxx> wrote:

A friend told me Windows XP Pro and MS VISTA can only use 4GB RAM is that
true?

The 32-bit versions of both XP and Vista have a 32-bit (4GB) address
space, and therefore can use a maximum of 4GB. But some of that
address space must be used to access video RAM, BIOS, etc, so you will
probably get about 3.5GB. See
http://members.cox.net/slatteryt/RAM.html

The 64-bit versions of these systems allow MUCH more RAM.

--
Tim Slattery
MS MVP(Shell/User)
Slattery_T@xxxxxxx
http://members.cox.net/slatteryt
.

Relevant Pages

  • Re: XP Pro & VISTA Memory Usage?
    ... The 32-bit versions of both XP and Vista have a 32-bit address ... address space must be used to access video RAM, BIOS, etc, so you will ... Tim Slattery ...
    (microsoft.public.windowsxp.general)
  • Re: XP Home and 4GB RAM OK?
    ... Gb is available to the user - hardware takes some of it. ... That 4GB address space is used to access video RAM, ROM BIOS, ... Tim Slattery ...
    (microsoft.public.windowsxp.general)