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Ram Query Xp Pro Sp3


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#1 frazzeld

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Posted 12 August 2008 - 03:03 PM

Hi Guy's
hopefully somebody can answer my query.... I have a memory (RAM) question.
Currently have a PC with 3Gb of RAM installed, 2 Hdds.... XP Pro & Vista H Premium, dont use the Vista option very often..my query is.... the 3Gb is recognised as being 3Gb, I have just purchased another 2Gb stick & removed the 1Gb so now I have 4Gb however the PC only recognises 2.50Gb in both XP & Vista? tried both sticks on there own both show as being 2Gb

Motherboard Max Capacity: 4096
Memory Slots: 2

Both sticks 400MHz DDR2 800

Any advice

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#2 nigglesnush85

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Posted 12 August 2008 - 03:48 PM

Hello frazzeld,

From what I understand, Vista uses a portion of memory to perform other functions. This ammount is then discounted from the total.
With XP, do you have intergrated graphics? If so you may find that the graphics is using some of the RAM.
Regards,

Alan.

#3 hamluis

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Posted 12 August 2008 - 04:06 PM

I (XP Home, SP3) have 4GB of RAM installed on my other system. XP recognizes 3.37GB of it, which sounds right (after allowing for onboard video). My BIOS reports 4096MB installed, with 3,967 useable.

My understanding is that the amount of RAM reflected with 4GB and 32-bit XP...will vary according to chipset, BIOS, and other factors.

Worth reading, IMO: http://www.asisupport.com/ts_4GB_memory_info.htm

Louis

#4 usasma

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Posted 12 August 2008 - 05:19 PM

On 32 bit versions of Windows the amount of reported RAM will vary between 2.5 and 3.6 when you install 4 gB of RAM. This is a complicated subject and it is determined by the abilities of the BIOS to recognize that amount of RAM and the ability of Windows to utilize it.

Here's an article about it for Vista - but it applies to XP also: http://support.microsoft.com/?kbid&ID=929605
Here's a thread with even more info: http://www.bleepingcomputer.com/forums/ind...mp;#entry602330
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