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4gb ram 32-bit pae [message #375309]

Sat, 07 March 2009 13:51

Nightma12
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Registered: August 2003

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Hey,

Im running XP SP3 Home edition 32-bit with 4GB of RAM (purchased last week Smile

) yet only 2.99gb shows up in system properties.
i
Ive already enabled PAE but nothing changed =/ - Is there anyway to reconise the missing gb without having to upgrade to 64-bit?

I read that with PAE enabled 32-bit OS is able to read up to 64GB of memory (although effectively useing masses of CPU power to read up to this point under 32bit) - Yet for me it wont budge from 2.99...

When i had vista SP1 32bit installed a few days back, that correctly picked up all 4GB of ram but Vista RTM simply picked up 2.99g

Ive included a screenshot if it helps ^_^ index.php?t=getfile&id=9716&private=0

Attachment: pae.JPG
(Size: 28.82KB, Downloaded 314 times)

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Re: 4gb ram 32-bit pae [message #375311 is a reply to message #375309]

Sat, 07 March 2009 13:57

cmatt42
Messages: 2057
Registered: July 2004

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General (2 Stars)

The short answer is no.

The long answer is also no.

You'll want to save headaches and move on to 64-bit.

GunKataGaming.net

[Updated on: Sat, 07 March 2009 13:59]

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Re: 4gb ram 32-bit pae [message #375312 is a reply to message #375309]

Sat, 07 March 2009 14:03

ExEric3
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Colonel

What is your video card? How much memory have?

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Re: 4gb ram 32-bit pae [message #375315 is a reply to message #375311]

Sat, 07 March 2009 14:12

Nightma12
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Registered: August 2003

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cmatt42 wrote on Sat, 07 March 2009 14:57

The short answer is no.

The long answer is also no.

You'll want to save headaches and move on to 64-bit.

http://www.microsoft.com/whdc/system/platform/server/PAE/PAEdrv.mspx
^^ so whats this? lol

Quote:

What is your video card? How much memory have?

Geforce 9600M GT

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Re: 4gb ram 32-bit pae [message #375316 is a reply to message #375309]

Sat, 07 March 2009 14:22

CarrierII
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Registered: February 2006
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Quote:

How much memory does your graphics card have?

Renguard is a wonderful initiative

Toggle Spoiler

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Re: 4gb ram 32-bit pae [message #375321 is a reply to message #375309]

Sat, 07 March 2009 15:30

Nightma12
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Registered: August 2003

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512mb

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Re: 4gb ram 32-bit pae [message #375325 is a reply to message #375321]

Sat, 07 March 2009 15:49

ExEric3
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Nightma12 wrote on Sat, 07 March 2009 23:30

512mb

So there is first answer. 512MB you will not see because graphic card. Sneaky

Try check bios settings section about chipset. Before it was called Aperture size (it was for AGP) now it have different name.

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Re: 4gb ram 32-bit pae [message #375330 is a reply to message #375309]

Sat, 07 March 2009 16:27

Nightma12
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all i have in my bios is time/date and boot order ^_^ lol.

Seriously though, shouldnt pae give me access to my full 4gb? (or so it claims?)

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Re: 4gb ram 32-bit pae [message #375339 is a reply to message #375309]

Sat, 07 March 2009 17:15

danpaul88
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Registered: June 2004
Location: England

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General (5 Stars)

Quote:

Windows XP (all versions)

4 GB of physical RAM*

Quote:

* Total physical address space is limited to 4 GB on these versions of Windows.

From the PAE article you linked to. The reason you can't see all 4GB is because 1.01gb (in your case) of the available address space is used by the graphics card (512mb) and other devices (every single device on your system will be allocated an address range which refers to it's input and output buffers). Hence why you only actually get 2.99gb of usable memory. The more devices you add, the lower that number will go. The reverse is also true, remove devices (or disable them in BIOS) and you will be able to access more of your RAM.

I had the same problem you did, in that I had 4gb of RAM but my 32bit installation of Vista could only access 3.5gb of it. That's why I am now running Vista x64, and have not had any problems with it, other than the hassle of upgrading.

http://steamsignature.com/card/1/76561197975867233.png

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Re: 4gb ram 32-bit pae [message #375364 is a reply to message #375315]

Sat, 07 March 2009 20:03

saberhawk
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Nightma12 wrote on Sat, 07 March 2009 16:12

http://www.microsoft.com/whdc/system/platform/server/PAE/PAEdrv.mspx
^^ so whats this? lol

See big red letters. PAE for addresses greater than 4gb isn't enabled on any consumer 32-bit version of Windows, nor is it enabled on "Standard" 32-bit server editions (http://en.wikipedia.org/wiki/Physical_Address_Extension). To make things more complicated, just about all of your devices reserve address space (but not physical memory), therefor cutting down the amount of addressable RAM. Upgrade to 64-bit if you really want to use that extra gigabyte of memory.

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