Windows sees RAM but programs do not

I have 6GB of RAM, and Windows sees all the RAM when checking my computer properties. Also some computer statistics programs will see it, like "Speccy". But everything else only sees 3GB of RAM and my machine is running like it only has 3GB. I use some RAM intensive apps so I need to squeeze out as much as I can. Here's some of what Speccy reports:

Windows Vista Home Premium 32-bit SP2

AMD Athlon 64 X2 5600+
Windsor 90nm Technology

6.00GB Dual-Channel DDR2 @ 401MHz (6-6-6-18)

ASUSTek Computer INC. NARRA2 (Socket AM2 )

1024MB NVIDIA GeForce GTX 550 Ti (EVGA)

I have recently found out that since I'm running 32-bit that my RAM will be limitied to 4GB but everything else reports that I have 3GB of RAM not 4. Even DXDIAG reports only 3GB.

System Information
Time of this report: 7/4/2013, 13:30:28
Machine name: HOME-PC
Operating System: Windows Vista™ Home Premium (6.0, Build 6002) Service Pack 2 (6002.vistasp2_gdr.130501-1537)
Language: English (Regional Setting: English)
System Manufacturer: HP-Pavilion
System Model: GN561AA-ABA a6230n
BIOS: Phoenix - AwardBIOS v6.00PG
Processor: AMD Athlon(tm) 64 X2 Dual Core Processor 5600+ (2 CPUs), ~2.8GHz
Memory: 3070MB RAM
Page File: 1941MB used, 4419MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
DxDiag Version: 7.00.6002.18107 32bit Unicode


I would like to at least get it to 4GB available... is there any way?
3 answers Last reply Best Answer
More about windows sees ram programs
  1. Sadly Windows 32bit will only let you use 3GB of you RAM.
    you will need to upgrade/reinstall your computer with 64bit windows to use all 6GB of RAM.
  2. Time to buy a 64 bit version of windows OS, sorry to say.
  3. Best answer

    sometimes you are lucky and get approx 3.5GB of ram with Windows 32 bit operating systems
    (some Windows servers allowed more than 4GB to be seen by 32 bit Windows)

    You get 4GB - (space used by ROMS)
    such as BIOS & graphics card bios etc

    Upgrading to 64 bit Windows Vista will require a clean install (Format C:) and re installing all your programs

    check you have 64bit drivers for all legacy hardware such as Printers, scanners, multifunction devices etc

    The microsoft Vista upgrade readiness tool should be available at Microsoft

    If you have a Vista 64 bit DVD use that if not buy the Windows 7 version


    Mike Barnes
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