On Wed, 2008-10-01 at 12:13 -0500, Roger Heflin wrote:
The chipset is not capable of remapping under certain conditions, or
the bios
won't do it because it would cause lower memory availability with
windows. Some
bios can only remap entire dimms, and that would result in less memory
for a
32-bit only OS so they don't do it even though it would result in more
memory
for a 64-bit/PAE os.
>
> b) How do XP and Vista handle this ? Are they limited to 3GB of RAM
> too ?
In the case of a bios limitation they would also be limited to only
3GB.
Here is the spec sheet for my laptop.
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01490775&cc=us&a...
It says:
"Memory 4096 MB Memory Max Up to 4GB DDR2 (Up to 1 GB may not be
available due to 32-bit operating system resource requirements)"
This machine ships with a 64 bit version of Vista. I didn't think to
check what the available memory was under Vista. I don't have it
installed anymore.