Windows 7 32Bit - Memory Usgae

Hi All..

Hoping that I have the correct forum here to ask this question...

I have a Toshiba Satellite Pro P300 laptop and the Motherboard configuration is:

Operating System Properties:
OS Name Microsoft Windows 7 Ultimate
OS Language English (United States)
OS Kernel Type Multiprocessor Free (32-bit)
OS Version 6.1.7601 (Win7 RTM)
OS Service Pack Service Pack 1
OS Installation Date 28/09/2010
OS Root C:\Windows

CPU Type Mobile DualCore Intel Core 2 Duo T9400,2533 MHz(9.5 x 267)
Motherboard Name Toshiba Satellite Pro P300
Motherboard Chipset Intel Cantiga PM45
System Memory: 3066 MB (DDR2-800 DDR2 SDRAM)
DIMM1: Micron 16HTF25664HY-800E1 2 GB DDR2-800 DDR2 SDRAM
DIMM3: Micron 16HTF25664HY-800E1 2 GB DDR2-800 DDR2 SDRAM

I noticed that even though I have two(2)2GB Memory modules installed, It appears that I am only using 3GB total.???I thought that I might have a faulty memory module and decided to see about purchasing another module, but, when I spoke to the store assistant, he told me that only x64 would be able to use the FULL 4GB of memory and that x32 has a limitation.??Can someone please confirm if this is the case or not.???



Last edited:


Fantastic Member
That is correct!


Extraordinary Member
Yea, with 32bit you are limited to roughly 3.25gb, no matter how much ram you throw in the machine.

Thanx All... That sheds a little more light on the subject..!!



This website is not affiliated, owned, or endorsed by Microsoft Corporation. It is a member of the Microsoft Partner Program.