6 Gigs of RAM not 4

[Davie Mio]

So i see a lot of posts of people runing 32x Vista who only see 3.3 Gigs.
I'm running 64x vista Primium and have installed 6 Gigs of Ram.

Vista only sees just over 4 Gigs or ram Like 4.03 Gigs or something like
that. Anyone have any ideas?

I've seen something about maybe there's a setting in Bios or something.

 

[BigJim]

this is a guess but maybe your motherboard chipset is restricting it.

 

[Dominic Payer]

The BIOS settings to look for are Memory Hole and MTRR. You will probably
get the best advice on these settings in your motherboard manufacturer's
forums, and may need to update your BIOS.

 

[JW]

Here is the link to the MS KB article on the subject.

http://support.microsoft.com/kb/929605/en-us

Many MOBOs don't support more then 4GB and I suspect that you have one that
does not.
How much memory is reported in your BIOS?
Another possibility is that you Memory Dims are not installed as matched
pairs. What dims do you have and what slots are they in?