Re: 4GB Memory on my 32 bit CPU
- From: "Robert Miles" <robertmiles@xxxxxxxxxxxxxxxxxxx>
- Date: Mon, 23 Mar 2009 03:04:25 -0500
Your header says you're using the Windows Mail program, which only
runs under the Vista versions of Windows. 32-bit Vista can use 4 GB
of memory, but with about 0.5GB reserved for the use of the Vista
operating system (mainly to reach peripherals such as graphics boards),
and not the programs you tell it to run, even if more memory is installed.
Some of the other 3.5 GB may be needed to hold what you intend to
send to the graphics board.
You might want to ask in the following newsgroup whether your
nVidia board implements its memory it a way that makes it also usable
as non-graphics memory and whether doing this messes up the graphics:
alt.comp.periphs.videocards.nvidia
There's a possibility that you may want to switch to a 64-bit version of
Vista to be able to use both the entire 4 GB or more and the graphics
board at the same time, but check whether any programs you want
to run that didn't come as a part of Vista will run under 64-bit versions
of Vista; there's a good chance some of them won't and some of them
may require you to upgrade to a 64-bit version first. 64-bit versions of
Vista are likely to need at least 0.5 GB or reserved space as well, but
are able to place it at a higher address than 32-bit programs can reach
directly. Many 32-bit programs are able to run under 64-bit versions
of Vista, though.
Robert Miles
"SF-East Bay'r" <not_real@xxxxxxxxxxx> wrote in message
news:sQyxl.14910$W06.9657@xxxxxxxxxxxxxxxxxxxxxxx
I have 3GB installed. I just wondered whether 4GB would make any
difference.
Tom
"rjn" <email4rjn@xxxxxxxxx> wrote in message
news:209ea366-f0d4-40a3-b583-bdb0b78e6478@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Benjamin Gawert <bgaw...@xxxxxx> wrote: >
If I added more memory to get to 4GB, would the built-in shared
memory nVidia GeForce use any of the 4GB memory that the OS can't use ?
No.
That suggests that most IGP/UMA graphics, under
32-bit Windows, effectively consume twice as much
memory as you'd expect:
* once to grab some from low memory for use,
* and again to map it into high memory
My latest build, with 4GB RAM, uses ATI IGP with 128MB
sideport (dedicated graphics RAM on motherboard),
and I set the BIOS to tell it to use only sideport.
Windows XP/32 reports
3.50 GB available. I was actually surprised.
The OP might still get some benefit to installing 3GB,
or 4GB if that's not much more expensive.
--
Regards, Bob Niland mailto:name@xxxxxxxxxxx
.
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