Boston Linux & Unix (BLU) Home | Calendar | Mail Lists | List Archives | Desktop SIG | Hardware Hacking SIG
Wiki | Flickr | PicasaWeb | Video | Maps & Directions | Installfests | Keysignings
Linux Cafe | Meeting Notes | Blog | Linux Links | Bling | About BLU

BLU Discuss list archive


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

4 Gig in new Prec 490 showing as 3 Gig?



On Wed, 02 May 2007 16:22:09 -0400
"Grant M." <gmongardi at napc.com> wrote:

> John Abreau wrote:
> > I ran into this about a month ago; here's what Dell's support said:
> > 
> > 
> >> Actually, your system is functioning normally. There are two main
> >> reasons why the system will report less than 4GB of memory. First
> >> of all, the system reserves 500MB of memory just to operate the
> >> PCI-Express bus at its full potential. More memory is reserved for
> >> other integrated devices. On top of that, Windows XP Professional
> >> (and any 32-bit operating system) has memory reporting limitations
> >> at 4GB of memory.
> 
> That is probably one of the most useful bits of information I've ever 
> seen from Dell. I am duly impressed.
> Grant M.
As mentioned previously, to see more than 3GB you need to have PAE
enabled. Linux will be able to access the 4GB (or in this case 3.5GB),
but on a 32-bit system your applications are limited to 3GB. 
Here is a pretty good detailed explanation:
http://kerneltrap.org/node/2450
-- 
Jerry Feldman <gaf at blu.org>
Boston Linux and Unix user group
http://www.blu.org PGP key id:C5061EA9
PGP Key fingerprint:053C 73EC 3AC1 5C44 3E14 9245 FB00 3ED5 C506 1EA9



BLU is a member of BostonUserGroups
BLU is a member of BostonUserGroups
We also thank MIT for the use of their facilities.

Valid HTML 4.01! Valid CSS!



Boston Linux & Unix / webmaster@blu.org