Want to upgrade to 8GB RAM is my computer compatible ?

Hi ,
I want to upgrade to 8GB RAM (Now I'm using 1 GB RAM)
I want to know if my computer compatible with 8GB or not !
my friend told me that it depends on the processor ... Does it ??

Info:
Windows 7 professional
Processor : Intel(R) Celeron(R) CPU 900 @ 2.20GHz 2.19 GHz
Installed memory (RAM): 1.00 GB
System type: 32-bit operating system


I'm sorry if the info is not enough I don't know what is the important info to tell !!

The CPU itself is 64 bit capable,

Intel® Celeron® Processor 900 (1M Cache, 2.20 GHz, 800 MHz FSB)

but seeing it is a socket 478 CPU, it all comes down to what the motherboard will support; one bit of info you left out. Also as long as you are running 32 bit Windows anything beyond 3 GB is essentially a waste as 32 bit Windows can only use up to 4 GB, and you will lose some of that due to memory addressing of all devices in and on the motherboard.

I don't know where to find motherboard information ( How?)

Do you recommend upgrading to 64x and then use 8GB RAM ,, or I just change to 4GB ??

I'm having fears upgrading to 64x ( cause I had issue when I first install windows 7 ,, Is it possible to upgrade without format ??

This should show what the make and model of the motherboard is,

Speccy - System Information - Free Download

I wouldn't worry about 8 GB of ram and 64 bit until we know whether the motherboard can even support it.

Download Crucial's memory scanner, which will scan your system and suggest the best RAM configuration for your computer.

SDRAM, DDR2 and DDR RAM memory upgrades from Crucial.com

Motherboard
Manufacturer FUJITSU SIEMENS
Model D48 (U2E1)
Version 20
Chipset Vendor Intel
Chipset Model GL40
Chipset Revision 09
Southbridge Vendor Intel
Southbridge Model 82801IM (ICH9-M)
Southbridge Revision 03
System Temperature 36 °C
BIOS
Brand Phoenix Technologies LTD
Version V1.22
Date 08/11/2009
PCI Data
Slot UNKNOWN
Slot Type UNKNOWN
Slot Usage Available
Bus Width 32 bit
Slot Designation PEG Slot J6B2
Slot Number 0
Slot PCI
Slot Type PCI
Slot Usage In Use
Bus Width 32 bit
Slot Designation PCI Express Slot J6B1
Slot Number 1
Slot PCI
Slot Type PCI
Slot Usage Available
Bus Width 32 bit
Slot Designation PCI Express Slot J6D1
Slot Number 2
Slot PCI
Slot Type PCI
Slot Usage In Use
Bus Width 32 bit
Slot Designation PCI Express Slot J8B3
Slot Number 3
Slot PCI
Slot Type PCI
Slot Usage Available
Bus Width 32 bit
Slot Designation PCI Express Slot J8D1
Slot Number 4
Slot PCI
Slot Type PCI
Slot Usage In Use
Bus Width 32 bit
Slot Designation PCI Express Slot J7B1
Slot Number 5
Slot PCI
Slot Type PCI
Slot Usage Available
Bus Width 32 bit
Slot Designation PCI Express Slot 6
Slot Number 6

No, you can't upgrade from 32 to 64 bit without a re-install. You also can't use 32 bit drivers on a 64 bit system, so you may want to make sure you can get 64 bit drivers for all your hardware before you go that route.

4 GB max. Specs on the chipset,

Mobile Intel® GL40 Express Chipset