Asus P5VD1-X does not show 4GB RAM

[pringtech]

I have placed 4 matching DIMMS of DDR-400 RAM in this motherboard. Prior to updating the BIOS firmware, it only showed 3072MB. I updated the BIOS firmware to the latest available (rev:0704), and now I'm getting 3392MB, but still not 4096MB.

Does anybody know what gives with this?

No OS involved (yet). Will eventually run a Debian distro.

Knoppix also shows a similar amount as does the Ubuntu 8 64bit live disk.

CPU: Intel 630 (@ 3.0GHz)
RAM: 4 x Kingston KVR400 1GB modules

Any advise is appreciated.

Thank you.
PR

 

[GhislainG]

Is memory remapping enabled?

 

[pringtech]

I don't know. I've got the memory functions set to AUTO at this point in the BIOS. I'll check for that setting. Where might I find it?

Thank you.

 

[tcsenter]

32-bit architecture limits. Not even Linux is going to do any better on this VIA chipset, which does NOT support memory remapping. Welcome to 2004.

 

[pringtech]

I'm finding that the hardware architecture may not be able to handle beyond 3GB even though the specs claim 4GB. I was hoping to use this as a development server using VMWare's ESXi environment, but I don't think it is going to handle it.

There is not BIOS function for "Memory Remapping" that I've found. I'm going to fall back to 2 x 1GB + 2 x 512MB and work from there.

tcsenter is probably right about the VIA chipset.

Thanks.