[SOLVED] Xp Not detecting my 5gb of RAM but Bios is??

jezzer · 04-08-2008, 05:01 AM

Ive recently installed an extra 4gb of ddr2 ram to make 5gb. It is all installed correctly and has been detected by my system bios but windows only detects 3??
I am currently running windows xp home
does anyoned have any ideas why this is happening

vladimirb · 04-08-2008, 05:10 AM

Windows XP 32-bit can detect only 3,25 GB or RAM memory no matter how much you can put in.
I am not sure but I think that 64-bit XP can see more than 3,25...

jezzer · 04-08-2008, 05:21 AM

Ive heard about this
i have vista availible but not the 64bit disc but apparently they can send me it
I have an intel core 2 duo E6300 will this support 64bit?

vladimirb · 04-08-2008, 05:29 AM

If you want to install 64-bit version of XP Professional or Vista, you need to have 64-bit processor.
Your Core2Duo should be 64-bit, you can see it in your System Information.

**Aus_Karlos** · 04-08-2008, 08:03 AM

This page should help. http://www.microsoft.com/whdc/system...AE/PAEdrv.mspx
its called PAE (Physical Address Extension). What it does is enable 32-bit XP to use 4gb of RAM. However the OS will only show 3.5gb, this is because the 500mb are used for hardware resources and is unusable by XP.

jezzer · 04-09-2008, 03:04 AM

Id like to be able to use all of my 5gb of ram lol,
ive downloaded the 64bit vista (legally) i will use my original key etc with my 32bit version. This is perfectly legal as you can ask for microsoft to send you a 64bit version but you must pay postage.

Can anyone tell me if my processor is compatible with 64 bit??

Underclocker · 04-09-2008, 03:38 AM

Yes, the E6300 is 64-bit compatible, just like all Core 2 Duo processors.

http://www.intel.com/products/proces...ifications.htm

jezzer · 04-09-2008, 03:56 AM

Thanks much appreciated

04-08-2008, 05:01 AM	#1 (permalink)
jezzer Registered User Join Date: Feb 2007 Location: SW Posts: 18 OS: Windows XP Pro 64 BIT My System	[SOLVED] Xp Not detecting my 5gb of RAM but Bios is?? Ive recently installed an extra 4gb of ddr2 ram to make 5gb. It is all installed correctly and has been detected by my system bios but windows only detects 3?? I am currently running windows xp home does anyoned have any ideas why this is happening

04-08-2008, 05:10 AM	#2 (permalink)
vladimirb Hardware Team Tech Join Date: Mar 2008 Location: Orgrimar/Thunder Bluff Posts: 606 OS: xp pro sp3, Vista Ultimate My System	Re: Xp Not detecting my 5gb of RAM but Bios is?? Windows XP 32-bit can detect only 3,25 GB or RAM memory no matter how much you can put in. I am not sure but I think that 64-bit XP can see more than 3,25...

04-08-2008, 05:21 AM	#3 (permalink)
jezzer Registered User Join Date: Feb 2007 Location: SW Posts: 18 OS: Windows XP Pro 64 BIT My System	Re: Xp Not detecting my 5gb of RAM but Bios is?? Ive heard about this i have vista availible but not the 64bit disc but apparently they can send me it I have an intel core 2 duo E6300 will this support 64bit?

04-08-2008, 05:29 AM	#4 (permalink)
vladimirb Hardware Team Tech Join Date: Mar 2008 Location: Orgrimar/Thunder Bluff Posts: 606 OS: xp pro sp3, Vista Ultimate My System	Re: Xp Not detecting my 5gb of RAM but Bios is?? If you want to install 64-bit version of XP Professional or Vista, you need to have 64-bit processor. Your Core2Duo should be 64-bit, you can see it in your System Information.

04-08-2008, 08:03 AM	#5 (permalink)
Aus_Karlos Mentor, Games Team Join Date: Mar 2007 Location: Western Australia Posts: 1,571 OS: Vista Ultimate x64, Windows XP 32-bit/64-bit My System	Re: Xp Not detecting my 5gb of RAM but Bios is?? This page should help. http://www.microsoft.com/whdc/system...AE/PAEdrv.mspx its called PAE (Physical Address Extension). What it does is enable 32-bit XP to use 4gb of RAM. However the OS will only show 3.5gb, this is because the 500mb are used for hardware resources and is unusable by XP. __________________ MemTest86 / Nvidia Drivers / ATI Drivers / DirectX 9.0c / Sys Requirements / Everest Crysis Tweak

04-09-2008, 03:04 AM	#6 (permalink)
jezzer Registered User Join Date: Feb 2007 Location: SW Posts: 18 OS: Windows XP Pro 64 BIT My System	Re: Xp Not detecting my 5gb of RAM but Bios is?? Id like to be able to use all of my 5gb of ram lol, ive downloaded the 64bit vista (legally) i will use my original key etc with my 32bit version. This is perfectly legal as you can ask for microsoft to send you a 64bit version but you must pay postage. Can anyone tell me if my processor is compatible with 64 bit??

04-09-2008, 03:38 AM	#7 (permalink)
Underclocker Tech Hardware Team Join Date: Aug 2007 Location: A land girt by sea. Posts: 551 OS: Windows XP Pro SP3 My System	Re: Xp Not detecting my 5gb of RAM but Bios is?? Yes, the E6300 is 64-bit compatible, just like all Core 2 Duo processors. http://www.intel.com/products/proces...ifications.htm

04-09-2008, 03:56 AM	#8 (permalink)
jezzer Registered User Join Date: Feb 2007 Location: SW Posts: 18 OS: Windows XP Pro 64 BIT My System	Re: Xp Not detecting my 5gb of RAM but Bios is?? Thanks much appreciated