Re: How Does x32 Vista Map a 4GB RAM?
> Well, as we all know, x32 editions of anything cannot use a full 4 gigs of
> RAM. Instead it uses about ~3.2 gigs of the RAM. I have a laptop with 1 gig
> of RAM and Vista Home Premium x32 and a Go6150 integrated graphics card and
> i'm thinking about upgrading the RAM to either 2gigs or 4 gigs. Now how does
> Vista "choose" the ~3.2 gigs of RAM it uses? Does it randomly choose ~3.2
> gigs every time the computer boots or a specific section forever? To
> illustrate my question, I've included an anology below.
Vista doesn't choose. This is done at the hardware level. BIOS will
program the hardware at startup. And that ~3.2G section will be the same
> Also since the Go6150 is integrated and the VRAM is mapped into the main
> RAM, where will the VRAM be mapped in a 4 gig config? Can it be mapped
> outside of the OS's ~3.2 GB or inside it?
It will be mapped at the top of your usable RAM, below 4G. So you will
actually get more for your money by using integrated graphics with 4GB
of RAM, because RAM and VRAM share the same address space.