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I have 4gb physical memory and xp sp3 showing only 3gb

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You have a 32 bit computer. The address space in a 32 bit computer can only take a max of 4GB of RAM but the operating system will only report less than the total amount of memory in the PC. See the below link for more information.
http://msdn.microsoft.com/en-us/library/aa366778.aspx

Posted on Nov 26, 2008

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I am using asus p5kpl-am se motherboard with c2d 2.93, 4gb ddr2 ram, 1gb zotac geforce 9800 series pci card with xp sp3 os. When i check properties from my computer the memory ram is showing only 3gb...


ASUS P5KPL-AM SE supports up to 4GB RAM. I think that 1GB RAM is shared with the PCI Express Graphic Card.

For further details about your CPU and Graphic processor, I suggest that you download two small free utilities

Click here to download CPUz
Click here to download GPUz
These usefull utilities will provide you all the additional details.

Good Luck!
CreativeTECH

Nov 25, 2010 | ASUS P5KPL-AM SE Motherboard

Tip

Mamimum RAM for User @ 3GB using boot.ini switch on 4GB Physical RAM


The DOS will always take a percentage of the physical RAM on the motherboard leaving the rest for the User. By default the Windows Operating System will use 50% of the physical RAM installed on the motherboard leaving the user the remaining 50% this can be changed using a switch in the boot.ini file

The /3GB was originally meant to be used in systems that have 3GB or more of RAM something that is no longer quite as rare as it used to be Windows XP SP3 will support upto 4GB although on a 32bit (x86) version of Windows will acually see 3.25gb that is the limitation.

However, even if you don't have 3 GB or more of memory, you can still use the /3GB switch. the switch can have any value between 2048 (2 GB) and 3072 (3 GB) megabytes. It needs to be expressed in decimal notation.

The /3GB switch applies to 32-bit systems only (x86).

Example with Windows XP SP3 Home Edition with the recovery console installed this gives you the option of default 50-50% split or the 3GB switch 75-25% split.

The /noexecute parameter enables, disables, and configures Data Execution Prevention (DEP), a set of hardware and software technologies designed to prevent harmful code from running in protected memory locations using the optin switch enables DEP only for operating system components, including the Windows kernel and drivers. Administrators can enable DEP on selected executable files by using the Application Compatibility Toolkit (ACT).

The /burnmemory parameter specifies the amount of memory, in megabytes, that Windows cannot use in this example, /burnmemory=128 will reduce the physical RAM memory that is available to Windows by 128 MB.

[boot loader]
timeout=10
default=multi(0)disk(0)rdisk(0)partition(1)WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)WINDOWS="Microsoft Windows XP Home Edition 3GB Switch" /noexecute=optin /3GB /fastdetect
multi(0)disk(0)rdisk(0)partition(1)WINDOWS="Microsoft Windows XP Home Edition " /noexecute=optin /burnmemory=128 /fastdetect
C:CMDCONSBOOTSECT.DAT="Microsoft Windows Recovery Console" /cmdcons


Check out the noexecute and the 3GB switch plus all available boot.ini switches HERE

I suggest that you use AnalogX MaxMem it is a realtime physical memory management program that automatically ensures that you always have as much physical memory available as possible used with the 3GB switch you should never have memory issues ever again.



on Mar 14, 2010 | Microsoft Windows XP Home Edition for PC

1 Answer

I am using Core 2 quad and my ram is 4GB but the ram is not showing 4gb when i turn on the pc its is just showing physical memory of 1.99 GB


32 bit operating system is limited to 4 gb but on a system fitted with 4GB or RAM and a modest graphics card with 512MB of on-board memory the end user normally sees about 3GB of installed system RAM. So what this means is that the realistic upper RAM limit for a 32-bit OS is more like 3GB. If you’re adding big graphics cards with larger amounts of RAM (or using Crossfire or SLI) then you’ll need to be seriously thinking about a 64-bit OS much sooner.

But it also might be that you have a bad chip try and start the system with one chip at a time if it starts with both then you know there good. Please post the results. ;)

Jun 17, 2010 | Computers & Internet

1 Answer

My windows not shwoing whole RAM size


What you are seeing is correct. You have 4GB of physical RAM installed in the computer and it is being recognized properly by the BIOS. A 32-bit operating system can only address approximately 3.5GB of RAM. Vista may be rounding the number down to 3GB or if you are using on-board video, some of the RAM is being allocated for use by the video circuitry and is not reported as system memory. To see all of the installed RAM in your operaing system, you need to upgrade to a 64-bit version of Vista.

May 29, 2009 | Kingston 2GB Secure Digital Memory Card

1 Answer

I cannot use 4 gb ram on my laptop


All versions of Windows that are not 64Bit will not display more then 3gb.

Windows XP Pro 64Bit will show 3gb and utilize 4gb if your system is physically capable (Consult your owners manual)


If you have Vista 64Bit and still do not show your 4gb, then there could be an issue with your ram, or as previously mentioned, your system can not support it.

To check which version you have press and hold the Windows key and press the pause key.

Let us know if you run into any bumps

Apr 16, 2009 | Computers & Internet

2 Answers

Best Graphics Card, RAM for D101GGc


go for the nvidia geforce 8500, your board Support for up to 2 GB of system memory so no 4GB( too bad)

Jan 27, 2009 | Intel D101GGC Motherboard

1 Answer

Cannot upgrade lenovo y400 memory to 4gb


That is because of window's limitations. Since you only have a 32-bit operating system installed, windows can only physically see a little over 3 GB of memory. The only way you can see that other memory is by installing either XP or Vista 64-bit operating system. Oh and please give this solution a fixya rating; I'd appreciate it. Thanks!

Dec 27, 2008 | Lenovo 3000 Y410 (59012354) PC Notebook

1 Answer

OS not showing full RAM


Hi Shibbymusic, as with most Asus boards if not all! The MB
A8N-E does not show all of your 4GB memory. See this FAQ;
http://support.asus.com/faq/faq.aspx?SLanguage=en-us&model=A8N-E&os=17
Like you, I too have 4GB of memory.
Asus A8N32-SLI Deluxe w/4GB memory only see's 3GB
The bios displays 3GB during boot up & so does windows XP 32bit.
You might want to think about upgrading to 64bit os.
Updating your bios should help as well.
(See A8N-E Bios version 1010); http://support.asus.com/download/download.aspx?modelname=A8N-E&SLanguage=en-us

Thank you for using fixya!
Mike

Dec 07, 2008 | ASUS A8N-E Motherboard

1 Answer

Brand new gateway m-6846 vista 64bit


The maximum amount of memory that your system can use is actually limited in two ways — not only is there a maximum amount of memory that your computer motherboard can accept, there is also a maximum amount of memory that your operating system (OS) can accept.

For instance, when you install 4GB of memory in a 32-bit Windows system (the most common version; 64-bit systems are typically used only by high-end users), your system will see (and utilize) only 3GB or 3.5GB.
Relax, there isn't a problem with the memory. Windows allows for 4GB of memory to be addressed, but this isn't 100 percent the same as having 4GB of physical memory.

What happens is that some of the addressable memory (regardless of how much you have physically installed) is reserved for use by page files or by some of the devices that you are using, such as a graphics card, PCI card, integrated network connections, etc., so it's unavailable for use as normal main memory.

The amount of memory needed for these devices is calculated by your system at startup; if you haven't maxed out the memory in your system, it's invisible to you, and all your physical memory (the RAM that's installed) is available for use. However if you've maxed out the DRAM in your system, this amount will be deducted from your physical memory, so you can't use 100% of your DRAM.

The maximum memory limitation varies by operating system; for instance, the 4GB memory limitation doesn't exist in 64-bit versions of Windows.

Memory maximums for current Microsoft® Windows OSs include:

  • Windows XP Home: 4GB
  • Windows XP Professional: 4GB
  • Windows XP 32-bit: 4GB
  • Windows XP 64-bit: 128GB
  • Windows Vista Home Basic: 4GB
  • Windows Vista Home Basic 64-bit: 8GB
  • Windows Vista Home Premium: 4GB
  • Windows Vista Home Premium 64-bit: 16GB
  • Windows Vista Ultimate: 4GB
  • Windows Vista Ultimate 64-bit: 128GB+
  • Windows Vista 32-bit: 4GB
  • Windows Vista 64-bit: 128GB+

May 23, 2008 | Computers & Internet

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