P5W-DH-Deluxe how to get 3gb memory to be used in 32bit XP..

On Feb 26, 8:22 pm, It's Not Me <l....TakeThisOut@nowhere.com> wrote:
> I show in bios 3072mb ram, and memtest show the full gb also. I boot
> into windows XP pro sp2 with all latest updates using auto-patcher. In
> windows it only show 2gb memory. I read about the 4gb limitation but I
> am only trying to get 3gb working.


The memory addressing needs of your particular hardware configuration
are greater than 1GB, which is not unusual in full-featured
contemporary motherboards with lots of bells and whistles. The total
range of this memory space required by your hardware to function is
often referred to as the PCI memory hole.

Three or four years ago, the typical PCI memory hole was 512MB ~
768MB. Today, its much larger on all but the most basic motherboards
using entry-level chipsets with no discrete controller chips for mass
storage, firewire, and the like. Your Intel ICH/MCH/FMW alone
requires 768MB out of the gate according to Intel white papers, not
including a graphics card or any other discrete PCI devices.

Windows doesn't decide how much memory gets reserved for your
hardware. The BIOS does based on the enumerated memory space
requirements of your hardware, the chipset design, the BIOS writer's
design choices, and industry standards (e.g. PCI Spec), then
communicates to Windows what memory is available to it.

As for physical address extensions (PAE), Microsoft changed the
behavior of PAE kernel mode in Windows XP starting with Service Pack
2. Support for more than 4GB of physical memory via 36-bit PAE was
effectively disabled, because 36-bit PAE exposed a class of driver
bugs that were too widespread to let 36-bit PAE go 'into the wild' on
desktop operating systems, which need to work with the broadest range
of hardware available including older hardware that isn't even
supported anymore. 36-bit PAE is still available on Microsoft's 32-
bit server or enterprise operating systems (e.g. Windows Server 2003
Enterprise and Windows 2000 Advanced Server).

So PAE will not do anything for your PCI memory hole issue on Windows
XP unless it is pre-SP2. Even then, it doesn't reclaim all of it, but
you get some memory space back, at the significant risk of driver bugs
and other problems.

Lastly, if you have an option in BIOS for S/W or H/W memory remapping,
it is of no use on Windows XP SP2, and can actually increase the PCI
memory hole size that you otherwise would have. Disable it unless
your operating system supports more than 4GB RAM via 64-bit OS or 36-
bit PAE.

Regards,

Tim
 >> Stay informed about: P5W-DH-Deluxe how to get 3gb memory to be used in 32bit XP.. 

Bill Jemison wrote:
> I posted a similiar question on 2/17 with the subject > Why less than 3
> GB RAM recommendation in A8N31-SLI deluxe
>
> Read all the posts but in nutshell it is a software (Windows XP 32 bit
> doesn't recognize all the available RAM) issue not a hardware issue.
>

Yet my P5P800 shows all of my 3 GB of RAM under XP Pro. It originally
had 1 GB and I later added another 2 GB of RAM.


> It's Not Me wrote:
>> I show in bios 3072mb ram, and memtest show the full gb also. I boot
>> into windows XP pro sp2 with all latest updates using auto-patcher. In
>> windows it only show 2gb memory. I read about the 4gb limitation but I
>> am only trying to get 3gb working. It shows Physical Address Extension
>> in system properties as I read somewhere this has something to do with
>> over 2gb memory usage in windows. I have re-installed windows to no
>> avail. I tried Xp Pro x64 edition, and it shows all 3gb memory. I
>> don't want to use 64 bit though as none of my software is 64 bit and
>> some even will not run in 64 bit Xp.
>>
>> I have a DFi infinity 975g/x which is also the Intel 975 chipset with
>> 3gb of 2x512 2x1204 of OCZ pc5400 memory, and it works perfectly sees
>> the memory just fine in XP.. So what gives?????
 >> Stay informed about: P5W-DH-Deluxe how to get 3gb memory to be used in 32bit XP.. 

On Mon, 26 Feb 2007 21:54:39 -0800, Bill Jemison <moggie.RemoveThis@europa.com>
wrote:

>I posted a similiar question on 2/17 with the subject > Why less than 3
>GB RAM recommendation in A8N31-SLI deluxe
>
>Read all the posts but in nutshell it is a software (Windows XP 32 bit
>doesn't recognize all the available RAM) issue not a hardware issue.
>
>It's Not Me wrote:
>> I show in bios 3072mb ram, and memtest show the full gb also. I boot
>> into windows XP pro sp2 with all latest updates using auto-patcher. In
>> windows it only show 2gb memory. I read about the 4gb limitation but I
>> am only trying to get 3gb working. It shows Physical Address Extension
>> in system properties as I read somewhere this has something to do with
>> over 2gb memory usage in windows. I have re-installed windows to no
>> avail. I tried Xp Pro x64 edition, and it shows all 3gb memory. I
>> don't want to use 64 bit though as none of my software is 64 bit and
>> some even will not run in 64 bit Xp.

It must be something with the bios on the P5W as my asus commando is
currently running just fine with XP Pro and 2x512 2x1024 of pc6400
corsair. The commando is a different chipset ( P965 ) how ever the DFI
board was a 975 chipset and it to could get Xp to see all 3gb ram.

Oh well back too asus web site and further googling for a true
solution. Thanks for responding.
 >> Stay informed about: P5W-DH-Deluxe how to get 3gb memory to be used in 32bit XP.. 

On Tue, 27 Feb 2007 06:01:57 GMT, "Michael W. Ryder"
<_mwryder DeleteThis @worldnet.att.net> wrote:

>Bill Jemison wrote:
>> I posted a similiar question on 2/17 with the subject > Why less than 3
>> GB RAM recommendation in A8N31-SLI deluxe
>>
>> Read all the posts but in nutshell it is a software (Windows XP 32 bit
>> doesn't recognize all the available RAM) issue not a hardware issue.
>>
>
>Yet my P5P800 shows all of my 3 GB of RAM under XP Pro. It originally
>had 1 GB and I later added another 2 GB of RAM.
>

Same here with my asus commando board and DFI Infinity both upgraded
to 3gb memory and windows sees it just fine. A side note the commando
does show slightly less than 3gb it shows as 2.93gb memory.
Well back to beating my head on the desk...........
 >> Stay informed about: P5W-DH-Deluxe how to get 3gb memory to be used in 32bit XP.. 

On 27 Feb 2007 04:37:05 -0800, "tcsenter" <tcsenter.DeleteThis@yahoo.com> wrote:

>On Feb 26, 8:22 pm, It's Not Me <l....DeleteThis@nowhere.com> wrote:
>> I show in bios 3072mb ram, and memtest show the full gb also. I boot
>> into windows XP pro sp2 with all latest updates using auto-patcher. In
>> windows it only show 2gb memory. I read about the 4gb limitation but I
>> am only trying to get 3gb working.
>
>
>The memory addressing needs of your particular hardware configuration
>are greater than 1GB, which is not unusual in full-featured
>contemporary motherboards with lots of bells and whistles. The total
>range of this memory space required by your hardware to function is
>often referred to as the PCI memory hole.
>
>Three or four years ago, the typical PCI memory hole was 512MB ~
>768MB. Today, its much larger on all but the most basic motherboards
>using entry-level chipsets with no discrete controller chips for mass
>storage, firewire, and the like. Your Intel ICH/MCH/FMW alone
>requires 768MB out of the gate according to Intel white papers, not
>including a graphics card or any other discrete PCI devices.
>
>Windows doesn't decide how much memory gets reserved for your
>hardware. The BIOS does based on the enumerated memory space
>requirements of your hardware, the chipset design, the BIOS writer's
>design choices, and industry standards (e.g. PCI Spec), then
>communicates to Windows what memory is available to it.
>
>As for physical address extensions (PAE), Microsoft changed the
>behavior of PAE kernel mode in Windows XP starting with Service Pack
>2. Support for more than 4GB of physical memory via 36-bit PAE was
>effectively disabled, because 36-bit PAE exposed a class of driver
>bugs that were too widespread to let 36-bit PAE go 'into the wild' on
>desktop operating systems, which need to work with the broadest range
>of hardware available including older hardware that isn't even
>supported anymore. 36-bit PAE is still available on Microsoft's 32-
>bit server or enterprise operating systems (e.g. Windows Server 2003
>Enterprise and Windows 2000 Advanced Server).
>
>So PAE will not do anything for your PCI memory hole issue on Windows
>XP unless it is pre-SP2. Even then, it doesn't reclaim all of it, but
>you get some memory space back, at the significant risk of driver bugs
>and other problems.
>
>Lastly, if you have an option in BIOS for S/W or H/W memory remapping,
>it is of no use on Windows XP SP2, and can actually increase the PCI
>memory hole size that you otherwise would have. Disable it unless
>your operating system supports more than 4GB RAM via 64-bit OS or 36-
>bit PAE.
>
>Regards,
>
>Tim

Thanks for the tip Tim I will put my gutted P5W back together again
and look for those options in bios.
 >> Stay informed about: P5W-DH-Deluxe how to get 3gb memory to be used in 32bit XP.. 

You guys see this:
http://msdn2.microsoft.com/en-us/library/ms791485.aspx?


"It's Not Me" <loser DeleteThis @nowhere.com> wrote in message
news:la29u298cl20o3kn0s2n1nmbj5ruaa5v0i@4ax.com...
> On Tue, 27 Feb 2007 06:01:57 GMT, "Michael W. Ryder"
> <_mwryder DeleteThis @worldnet.att.net> wrote:
>
>>Bill Jemison wrote:
>>> I posted a similiar question on 2/17 with the subject > Why less than 3
>>> GB RAM recommendation in A8N31-SLI deluxe
>>>
>>> Read all the posts but in nutshell it is a software (Windows XP 32 bit
>>> doesn't recognize all the available RAM) issue not a hardware issue.
>>>
>>
>>Yet my P5P800 shows all of my 3 GB of RAM under XP Pro. It originally
>>had 1 GB and I later added another 2 GB of RAM.
>>
>
> Same here with my asus commando board and DFI Infinity both upgraded
> to 3gb memory and windows sees it just fine. A side note the commando
> does show slightly less than 3gb it shows as 2.93gb memory.
> Well back to beating my head on the desk...........
 >> Stay informed about: P5W-DH-Deluxe how to get 3gb memory to be used in 32bit XP.. 

try adding this switch to boot.ini /3GB

On Mon, 26 Feb 2007 23:22:01 -0500, It's Not Me <loser DeleteThis @nowhere.com>
wrote:

>I show in bios 3072mb ram, and memtest show the full gb also. I boot
>into windows XP pro sp2 with all latest updates using auto-patcher. In
>windows it only show 2gb memory. I read about the 4gb limitation but I
>am only trying to get 3gb working. It shows Physical Address Extension
>in system properties as I read somewhere this has something to do with
>over 2gb memory usage in windows. I have re-installed windows to no
>avail. I tried Xp Pro x64 edition, and it shows all 3gb memory. I
>don't want to use 64 bit though as none of my software is 64 bit and
>some even will not run in 64 bit Xp.
>
>I have a DFi infinity 975g/x which is also the Intel 975 chipset with
>3gb of 2x512 2x1204 of OCZ pc5400 memory, and it works perfectly sees
>the memory just fine in XP.. So what gives?????
 >> Stay informed about: P5W-DH-Deluxe how to get 3gb memory to be used in 32bit XP.. 

On Mar 3, 9:11 am, John <mobi....TakeThisOut@hotmail.com> wrote:
> try adding this switch to boot.ini /3GB


The /3GB switch has nothing to do with making a 32-bit operating
system use all 4GB of RAM or somehow increase the physical address
space of 32-bit operating systems. This switch only changes the
balance between kernel mode and user mode virtual address space that
an application process can have.

Normally, every application can have up to 2GB of kernel mode virtual
address space and 2GB user mode virtual address space at its disposal
(4GB total). Using the /3GB switch changes this balance by increasing
user mode limit to 3GB while DECREASING kernel mode to 1GB (still just
4GB total).

Only applications that explicitly request this using
'LARGEADDRESSAWARE' flag can utilize the 3GB user mode virtual address
space, which currently is limited primarily to server and enterprise
class applications.


Regards,

Tim
 >> Stay informed about: P5W-DH-Deluxe how to get 3gb memory to be used in 32bit XP..