Vista x64 only sees 3326MB of RAM?!?

[gagnon.sylvain]

Hi, Dell doesn't want to help me because I changed OS from Vista Home
32bit to Vista Enterprise 64bit :-(

I've added 2 1GB PC5300 DIMMs to my existing 2 1GB PC5300 DIMMs for a
total of 4 GB. BIOS sees 4GB and yet, Vista **64Bit** (NOT 32bit) sees
only 3326MB. The system is a Dell Inspiron 530 with an Intel G33
chipset. I've added an ATI 2600XT (256MB onboard RAM) video card so I
believe I'm not sharing any RAM with the video card. BIOS is up to
date.

Anybody knows what I can do to use all (most) of the RAM? I've
searched the Web and I've seen this 'problem' mentioned with Vista
32bit but not 64 bit. System settings in Vista clearly says: 64-bit
Operating System.

Thanks.

 

[Kerry Brown]

It sounds like the motherboard itself only supports 4 GB. If that's the case
there isn't much you can do.

 

[Ian D]

Hi, Dell doesn't want to help me because I changed OS from Vista Home
32bit to Vista Enterprise 64bit :-(

I've added 2 1GB PC5300 DIMMs to my existing 2 1GB PC5300 DIMMs for a
total of 4 GB. BIOS sees 4GB and yet, Vista **64Bit** (NOT 32bit) sees
only 3326MB. The system is a Dell Inspiron 530 with an Intel G33
chipset. I've added an ATI 2600XT (256MB onboard RAM) video card so I
believe I'm not sharing any RAM with the video card. BIOS is up to
date.

Anybody knows what I can do to use all (most) of the RAM? I've
searched the Web and I've seen this 'problem' mentioned with Vista
32bit but not 64 bit. System settings in Vista clearly says: 64-bit
Operating System.

Thanks.

Check the BIOS for the Memory Remap option for 64 bit OS's. Enabling
that option will remap the hardware addresses from GB 3-4 to GB 4-5,
freeing all 4 GB for use by RAM.

 

[gagnon.sylvain]

According to this link from Intel, the chipset supports 8GB of RAM.

http://compare.intel.com/pcc/showchart.aspx?mmID=29000&familyID=10&culture=en-US

 

[gagnon.sylvain]

Check the BIOS for the Memory Remap option for 64 bit OS's. Enabling
that option will remap the hardware addresses from GB 3-4 to GB 4-5,
freeing all 4 GB for use by RAM.

There is no such option :-(

 

[Kerry Brown]

The chipset may. The motherboard may not.

http://www.ec.kingston.com/ecom/con...ell-Inspiron+530&distributor=0&submit1=Search