RAM issue

[scottws]

I just completed a new installation of Vista Business 64-bit. I decided to upgrade from Windows XP Professional 32-bit because I have 4 GB of physical RAM.

Well, I just got finished installing my drivers and I decided to look at system properties. It is seeing 3007 MB. I ran CPU-Z and it reports 4096 MB so it isn't like the BIOS isn't detecting one of the sticks. I thought one of the main reasons for the move to 64-bit was for the increased addressable memory.

Does anyone know what's going on? This kind of pisses me off.

 

[scottws]

Hmmm... CPU-Z reports the 4GB, but the BIOS does actually show 3008 MB. I'll have to figure out what I need to do on this motherboard...

 

[scottws]

Figured it out. I had to enable a "Memory Remap" feature in BIOS. Asus P5B-E btw.

 

[RebateMonger]

Microsoft: The system memory that is reported in the System Information dialog box in Windows Vista is less than you' expect if 4 GB of RAM is installed

"The BIOS must support the memory remapping feature. The memory remapping feature allows for the segment of system memory that was previously overwritten by the Peripheral Component Interconnect (PCI) configuration space to be remapped above the 4 GB address line. This feature must be enabled in the BIOS configuration utility on the computer. View your computer product documentation for instructions that explain how to enable this feature. Many consumer-oriented computers may not support the memory remapping feature. No standard terminology is used in documentation or in BIOS configuration utilities for this feature. Therefore, you may have to read the descriptions of the various BIOS configuration settings that are available to determine whether any of the settings enable the memory remapping feature."