?
Solved

Can we use more than 4 Gb RAM on 32 bit OS/Hardware..?

Posted on 2011-02-20
8
Medium Priority
?
796 Views
Last Modified: 2012-05-11
Can we use more than 4 GB RAM on 32 bit OS/Hardware..?
Please suggest if we can use 4GB+ RAM on 32 bit H/w [Desktop/Server] or on OS..?  
And if yes. ..What would be the recommended setting to get the maximum memory benefit on 32 bit environment?
Is there any specific setting required to use 4Gb + ram on 32 bit/64 bit H/W/OS.?
0
Comment
Question by:patron
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
8 Comments
 
LVL 15

Accepted Solution

by:
Lee Osborne earned 252 total points
ID: 34937531
Depending on what version of Windows you are using, the memory limits vary for both 32bit and 64bit.

Here the MSDN article listing all memory limits for Microsoft OS's and their variations:

http://msdn.microsoft.com/en-us/library/aa366778(v=vs.85).aspx

Lee
0
 
LVL 14

Expert Comment

by:charlestasse
ID: 34937628
Won't jump on what Lee has already said, his link is the best place for making this determination
0
 
LVL 11

Assisted Solution

by:MichaelVH
MichaelVH earned 498 total points
ID: 34937723
If your OS does not support more than 4GB, there is always the /3GB switch you can use on the boot loader; which will add another 1GB to the user mode so that applications can actually use it. In a windows environment 2GB is "reserved" for the OS and "only" 2GB is available for applications.

For more information, please check:
http://technet.microsoft.com/en-us/library/bb124810(EXCHG.65).aspx
0
VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

 
LVL 70

Assisted Solution

by:KCTS
KCTS earned 249 total points
ID: 34937969
with Server ENTERPRISE EDITION ONLY - you can use the /PAE switch to address more than 4Gb RAM (the /3GB swich can be used IN ADDITION if you need it - but its the /PAE switch that allows the addtional RAM to be used.

Only ENTERPRISE editions od 32 bit windows server support the /PAE switch

64bit editions of Windows all support more than 4GB RAM natively
0
 
LVL 70

Assisted Solution

by:garycase
garycase earned 249 total points
ID: 34938066
A 32-bit OS is restricted to a 4GB address space, but there are a few ways to use more RAM ...

=>  As noted above, if you're using an Enterprise or Datacenter version of Server 2003 or 2008 you can access > 4GB

=>  If you're using XP, Vista, Windows 7, or any of the server OS's you can use DataRAM's RAMDisk Plus product to access the additional memory as a RAMDisk:
http://memory.dataram.com/products-and-services/software/ramdisk

Note that the 4GB Tuning parameter (/3GB) does NOT allow access to any more RAM ... it simply changes the size of the virtual address space available to your applications (from 2GB to 3GB).      This has nothing to do with the physical memory installed in the system (other than requiring a min of 2GB installed) -- it simply changes the virtual address space allocation from 2GB app/2GB system to 3GB app/1GB system.
0
 
LVL 11

Assisted Solution

by:MichaelVH
MichaelVH earned 498 total points
ID: 34938922
Garycase,

indeed it does NOT allow to use more than 4GB; it assigns more of the available memory to the user-space.
Sorry for my confusing english in my post earlier. ;-)

Grts,

Michael
0
 
LVL 2

Assisted Solution

by:synetron
synetron earned 252 total points
ID: 34940479
another note to consider is that the 4GB max in a Windows OS also includes the video card RAM as well, thus when you have 4GB installed on a Windows Vista 32bit OS you will see only 3 or 3.5GB listed even though you've installed 4GB physically - this is due to (for example) 4GB - 512MB of video.
0
 
LVL 1

Author Closing Comment

by:patron
ID: 35104565
Thanks
0

Featured Post

Complete VMware vSphere® ESX(i) & Hyper-V Backup

Capture your entire system, including the host, with patented disk imaging integrated with VMware VADP / Microsoft VSS and RCT. RTOs is as low as 15 seconds with Acronis Active Restore™. You can enjoy unlimited P2V/V2V migrations from any source (even from a different hypervisor)

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Background Information Recently I have fixed file server permission issues for one of my client. The client has 1800 users and one Windows Server 2008 R2 domain joined file server with 12 TB of data, 250+ shared folders and the folder structure i…
Learn about cloud computing and its benefits for small business owners.
Finding and deleting duplicate (picture) files can be a time consuming task. My wife and I, our three kids and their families all share one dilemma: Managing our pictures. Between desktops, laptops, phones, tablets, and cameras; over the last decade…
In this video, Percona Solutions Engineer Barrett Chambers discusses some of the basic syntax differences between MySQL and MongoDB. To learn more check out our webinar on MongoDB administration for MySQL DBA: https://www.percona.com/resources/we…

765 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question