4GB

R

rogerlebo

Hi!

I have 4 GB.

Windows Vista 32-bits recognizes 3.327 GB.
Windows XP recognizes 3.25 GB.

Windows Vista 64-bits recognizes 4 GB.

So, it is a problem with 32-bits.

Bonne soirée! Roger
 
A

Andyistic

32-bit Windows reserves the top 2 GB (1 GB with the Memory Option) for the
system (I/O mapped memory, kernel routines, etc.)
If you want more than 3 GB for applications, you need the 64-bit version of
Windows (both XP and Vista come in 64-bit form).

-- Andy
 
K

Kevin John Panzke

You forgot to mention that you need to have a X64 (64 Bit) Processor in
order to use X64 (64 Bit) Windows. The following are X64 Processor's:
Intel Core 2 Duo, Intel Pentium D, Intel 6XX Series Pentium 4, and several
AMD Processor's (I am a Loyal Intel Customer, so forgive me for not knowing
that much about AMD Processor's).
 
A

Andyistic

I felt it was obvious that one needed a 64-bit CPU to do anything with 64
bits. :)

I am just as ignorant about AMD as you are.
What happened to Cyrix? I would love to see a new CPU from them.

-- Andy
 
R

Ralf

Cyrix was acquired by VIA
Id did finally (good thing) die in 2003 (that's the last if heard)

Ralf
 
H

Hank Keleher

Did you even look at the date and time stamp on his two messages or do you
assume that he floats back and forth through time when using newsgroups? He
asked the same question of two different people... nine hours before your
replies. So how in the world was he supposed to see your answer on the
first fork nine hours in the future before asking it of a different
individual on the second fork?

Good grief.


alexp said:
so is there a different between 4GB-3GB in 32bit os?
Click to expand...
YES YOU HALFWIT, you've just been told.


--
Conor

I'm really a nice guy. If I had friends, they would tell you.

Earn commission on online purchases, £2.50 just for signing up:
http://www.TopCashBack.co.uk/Conor/ref/index.htm
 
L

Luke Fitzwater

Yes 4GB is the limit for a 32 bit processor (2^32 = 4294967296 or 4GB).
It is also the limitation for all memory on a 32bit OS; which means try
turning off your virtual memory (aka page file or swap file), and see if
the rest of the memory can be seen.

Also, Windows XP 32bit editions have a 2GB cap for user space, the rest
of your memory would be used exclusively for higher OS functions... to
increase the cap to 3GB just modify a line in your boot.ini to look like
this:

multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP
Professional" /fastdetect /3GB

There has been rumored that there is another switch in the boot.ini that
may work to see all 4GB; however I do not run any 32bit machines with
4GB, just my 64bit ones with Vista/XP x64. Here's a snippet of what that
switch should look like:

multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP
Professional" /fastdetect /PAE

And before anyone asks, no I have not found a way to modify Vista's
32bit to see all 4GB yet either.

-Luke

XP memory trivia...

The 3GB cap was only introduced in SP2. Original XP or SP1 is unaffected.

The 3GB cap was introduced to "protect" against memory exploits in
higher memory ranges.
 
L

Luke Fitzwater

I also forgot to mention, that even tho your bios may see 4GB of memory,
you may also have to dive into the bios and enable Memory Hole or Shadow
Memory options. Consult your motherboard's manual regarding high amounts
of RAM.

The only problems I've heard with this method is that some drivers are
not capable to run properly with it turned on. Of course the main
advantage is that Windows is circumvented to show all 4GB.

-Luke

"eschew obfusication"
 

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