Vista - Why does 4GB RAM only show as 3GB?

02-12-2009

me <me@xxxxxx> wrote:

Quote:

>On Thu, 12 Feb 2009 02:39:20 -0600, Mike Torello
><torellom@xxxxxx> wrote:
>

Quote:

>>saeen <guest@xxxxxx-email.com> wrote:
>>

Quote:

>>>
>>>OK so 32-bit don't show the actual ram size but does it means that
>>>system can only use the displayed ram amount?

>>
>>You've got it.

>
>I have a related question.
>I have a Compaq laptop with 2 gig of memory running Vista 32 bit. The
>on-board video uses 256 meg of system memory. The laptop supports 4
>gig of memory. Would the video use part of the 3 gig Vista uses or
>would it use the 1 gig Vista doesn't use.

Yes, the video would use part of the 3Gb of memory, just as it now
uses part of the 2Gb of memory.

Your system would "see" all 3Gb.

02-13-2009

In article <ne88p4lh739ug5m7pc718rg02m3k8chs34@xxxxxx>,
nomailplease@xxxxxx says...

Quote:

>
>
> Most all computers with REAL operating systems did this. In addition,
> they provided us with the ability to tune paging to maximize system
> performance. MS-Windows swaps, it just does a very lousy job of it.

Do not mess physical address size, related to disk swapping,
and CPU address space, related to mapping memory in a out of it.

Swap files, or Linux swap partitions are pretty well sitting within CPU
address space.

--
Poutnik

02-12-2009	#21 (permalink)
Mike Torello n/a posts	Re: Why does 4GB RAM only show as 3GB? me <me@xxxxxx> wrote: Quote: >On Thu, 12 Feb 2009 02:39:20 -0600, Mike Torello ><torellom@xxxxxx> wrote: > Quote: >>saeen <guest@xxxxxx-email.com> wrote: >> Quote: >>> >>>OK so 32-bit don't show the actual ram size but does it means that >>>system can only use the displayed ram amount? >> >>You've got it. > >I have a related question. >I have a Compaq laptop with 2 gig of memory running Vista 32 bit. The >on-board video uses 256 meg of system memory. The laptop supports 4 >gig of memory. Would the video use part of the 3 gig Vista uses or >would it use the 1 gig Vista doesn't use. Yes, the video would use part of the 3Gb of memory, just as it now uses part of the 2Gb of memory. Your system would "see" all 3Gb.
My System Specs

02-13-2009	#22 (permalink)
Poutnik n/a posts	Re: Why does 4GB RAM only show as 3GB? In article <ne88p4lh739ug5m7pc718rg02m3k8chs34@xxxxxx>, nomailplease@xxxxxx says... Quote: > > > Most all computers with REAL operating systems did this. In addition, > they provided us with the ability to tune paging to maximize system > performance. MS-Windows swaps, it just does a very lousy job of it. Do not mess physical address size, related to disk swapping, and CPU address space, related to mapping memory in a out of it. Swap files, or Linux swap partitions are pretty well sitting within CPU address space. -- Poutnik
My System Specs

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