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Default Windows XP 32Bit and RAM - Only 2GB Showing

Hi, I got a computer with 4gb of RAM, and am aware that XP can only show 3.something gb with PAE on. I have PAE on, yet it only shows 2gb. Tried reseating, using different slots, and one stick at a time, none are faulty, but it only shows 2gb... ...


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  #1  
Old 9th Mar 2009, 04:45
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Default Windows XP 32Bit and RAM - Only 2GB Showing

Hi,
I got a computer with 4gb of RAM, and am aware that XP can only show 3.something gb with PAE on. I have PAE on, yet it only shows 2gb. Tried reseating, using different slots, and one stick at a time, none are faulty, but it only shows 2gb... msinfo shows 4gb, so does the BIOS, but everything else shows up as 2gb. Anyone know why this is happening?
EDIT: sorry if it's a bit hard to see, didn't notice when posting...

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Windows XP 32Bit and RAM - Only 2GB Showing-ram.jpg  
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  #2  
Old 9th Mar 2009, 05:03
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Default Windows XP 32Bit and RAM - Only 2GB Showing

What is your video card?
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My System: 日夏子

Processor(s):
Core 2 Duo E6400 2.13 -> 3.01ghz
Motherboard:
MSI P6N SLI Platinum LGA 775
RAM Memory:
2GB Patriot Extreme Performance
Graphics Card(s):
PNY 8800GTS 320MB
Sound Card:
Sound Blaster Xtremegamer 7.1
Hard Drive(s):
80GB + 500GB
Optical Drive(s):
2x SATA
Case / PSU:
Antec 900 + 620W Aerocool zeroDBA
Cooling:
4x 120mm Yate-Loon + 200mm top
Network / Internet:
Qwest
Monitor(s):
Dell 22" S2209W (1920x1080)
Operating System(s):
Windows XP + 7
  #3  
Old 9th Mar 2009, 09:11
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Default Windows XP 32Bit and RAM - Only 2GB Showing

It's 4GB for everything, so all you other items (GFX card etc.) take out of it too.
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My System: Hybr!d

Processor(s):
AMD Turion 64 x2 TL-64 2.2GHz
Motherboard:
HP nForce 560
RAM Memory:
2GB DDR2 PC2-5300
Graphics Card(s):
Nvidia 7150M Onboard Integrated
Sound Card:
5.1 Onboard Integrated
Hard Drive(s):
250GB 5400RPM SATA300
Optical Drive(s):
18x CD/DVDRW-DL ATA
Case / PSU:
Stock HP
Cooling:
Stock HP
Network / Internet:
10/100 Nic / 10MB Virgin Cable
Monitor(s):
17" WXGA+ HD BrightView Widescreen
Operating System(s):
Windows 7 Ultimate 32Bit
  #4  
Old 9th Mar 2009, 13:07
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Default Windows XP 32Bit and RAM - Only 2GB Showing

Ok, my graphics card is HD4870 1GB, since XP can only show 3gb, it takes 1gb off that right?
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  #5  
Old 9th Mar 2009, 13:42
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Default Windows XP 32Bit and RAM - Only 2GB Showing

Yep.
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"I loved the P182 so much that, when my wife's system was all noisy and needed all sorts of cleaning, I bought her one. Then, when I wanted a cat, I bought a P182. The P182 is not a cat per se, but it's still an excellent buy."
  #6  
Old 9th Mar 2009, 22:11
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Default Windows XP 32Bit and RAM - Only 2GB Showing

Ahh, okay. Programs, games etc. can still use the RAM that isn't showing though, am I correct? Thanks.
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  #7  
Old 9th Mar 2009, 23:21
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Default Windows XP 32Bit and RAM - Only 2GB Showing

No, that RAM is mapped to the video card when the kernel is loaded, it cannot be reallocated.
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"I loved the P182 so much that, when my wife's system was all noisy and needed all sorts of cleaning, I bought her one. Then, when I wanted a cat, I bought a P182. The P182 is not a cat per se, but it's still an excellent buy."
  #8  
Old 9th Mar 2009, 23:36
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Default Windows XP 32Bit and RAM - Only 2GB Showing

Wait, so I have 4gb. 1GB is mapped to the video card, so there is 3gb left... but I can only use 2gb?
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  #9  
Old 10th Mar 2009, 00:57
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Default Windows XP 32Bit and RAM - Only 2GB Showing

http://www.codinghorror.com/blog/archives/000811.html
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"I loved the P182 so much that, when my wife's system was all noisy and needed all sorts of cleaning, I bought her one. Then, when I wanted a cat, I bought a P182. The P182 is not a cat per se, but it's still an excellent buy."
  #10  
Old 10th Mar 2009, 01:47
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Default Windows XP 32Bit and RAM - Only 2GB Showing

That explains it very clearly. Thanks.
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