R
ray
EXACTLY! Just as I said, it is a 32 bit OS accessing more than 4gb.
EXACTLY! Just as I said, it is a 32 bit OS accessing more than 4gb.
N
Not Even Me
I have a V6 under the hood and a V10 in the bed of my truck, does that mean
I have a V16?
It's the same with RAM, you may be able to see it, but can you USE it all?
Due to the addressing allocation limit of 4GB in a 32 bit OS, only 4GB TOTAL
can be seen.
So if you have a 1GB video card, you're already down to 3GB.
Other overhead (NIC, Soundcard, modem, IDE controller, etc) all use a small
amount of memory and each of those reduce the total available for use by the
OS.
I have a V16?
It's the same with RAM, you may be able to see it, but can you USE it all?
Due to the addressing allocation limit of 4GB in a 32 bit OS, only 4GB TOTAL
can be seen.
So if you have a 1GB video card, you're already down to 3GB.
Other overhead (NIC, Soundcard, modem, IDE controller, etc) all use a small
amount of memory and each of those reduce the total available for use by the
OS.
I
Ian D
Bob Campbell said:
PAE uses page switching. To access, say 16GB, you would have 4
pages of 4GB each. The 32 bit OS would allow access to only one
page at a time. The page switching kludge isn't too bad for accessing
data, but running code that may cross a page boundary would present
a bit of a programming challenge.
It's all becoming irrelevant. I noticed in the latest Bestbuy flyer that
half the desktop systems have from 4 to 8 GB of RAM, and run 64
bit Vista, and all for $1k, or less. In another year only low end PCs
will be 32 bit. This may accelerate the development of true 64 bit
applications.
R
ray
True 64 bit applications have been around for years. In the mid 90's I was
running true 64 bit applications on a DEC Alpha - it is just MS who is so
far behind and trying to play catchup.
S
Shawn B.
It's all becoming irrelevant. I noticed in the latest Bestbuy flyer that
I just purchased two Dell Studio XP 435MT's (Core i7, 12GB RAM) for $1,499
including a 24" widescreen monitor with Vista 64-bit. I'm thinking there
are just two main factors that will lead to wide spread adoption of 64-bit
(from the manufacturing and software side)
1) volume of 64-bit OS sold/installed
2) Microsoft's commitment to 64-bit (their plans to only support 64-bit OS
in the future, for example, as well as whether they make a native 64-bit
version of Office or other main software). For example, Exchange server
2007+ is 64-bit only. If they did that for BizTalk, SharePoint, SQL Server,
and possibly Office, then everyone will take 64-bit more seriously.
But it isn't just Microsoft and the *NIX crowd, it's the software vendors.
Right now there is lots of software I would love to have 64-bit only but the
software vendors don't provide the 64-bit option.
Borland/CodeGear/Embarcadero Delphi for example, does not even compile to
64-bit code yet. Visual Studio, while can build 64-bit images, is still
very much a 32-bit application, as well as Office, and many device drivers.
With time, things will improve. The mere fact that most new system's sold
today are 64-bit OS (on the Windows side) is a good indication that we're on
our way to greater industry support for 64-bit everything.
Thanks,
Shawn
I just purchased two Dell Studio XP 435MT's (Core i7, 12GB RAM) for $1,499
including a 24" widescreen monitor with Vista 64-bit. I'm thinking there
are just two main factors that will lead to wide spread adoption of 64-bit
(from the manufacturing and software side)
1) volume of 64-bit OS sold/installed
2) Microsoft's commitment to 64-bit (their plans to only support 64-bit OS
in the future, for example, as well as whether they make a native 64-bit
version of Office or other main software). For example, Exchange server
2007+ is 64-bit only. If they did that for BizTalk, SharePoint, SQL Server,
and possibly Office, then everyone will take 64-bit more seriously.
But it isn't just Microsoft and the *NIX crowd, it's the software vendors.
Right now there is lots of software I would love to have 64-bit only but the
software vendors don't provide the 64-bit option.
Borland/CodeGear/Embarcadero Delphi for example, does not even compile to
64-bit code yet. Visual Studio, while can build 64-bit images, is still
very much a 32-bit application, as well as Office, and many device drivers.
With time, things will improve. The mere fact that most new system's sold
today are 64-bit OS (on the Windows side) is a good indication that we're on
our way to greater industry support for 64-bit everything.
Thanks,
Shawn
B
B. Smith
Bob Campbell said:
It is not.
And at least one of the best buy PC's with 8GB RAM is a friggen dog.
I saw it.
Ran like crap.
You must like sheit shoveled down your throat.
Crappy machines loaded down with useless RAM...low end graphics, and crapola
CPU's.
Merry Christmas....LOL.
I'd give dirt before I'd give one of those PC's.
S
Syaoran Clow
Hey guys,
You know what's weird?
My friend is running a 32bit windows XP Pro
and he is seeing 5gb of ram when he goes into task manager.
In reality he has 6gb of ram installed, but seems like windows reserved 1 gb for something else. Anyway he can see 5 not 3.... isn't that weird?
So I am basically wondering why this is possible!!!
Thanks ~
Colin Barnhorst wrote:
All 32bit operating systems can see a maximum of 4GB.
16-Dec-06
All 32bit operating systems can see a maximum of 4GB. It is a mathematical
limit, not the OS. Vista x86 like XP x86 will show a little over 3GB on
System Properties. This is normal. The "missing" ram is not really
missing. It is used by the system and not presented to the user. There is
a range of addresses at the upper end of 4GB that is reserved. In a system
with less than 4GB these are logical addresses and are handled by the system
that way. However, when the system has 4GB it must block out physical ram
to protect the reserved addresses. In addition, the BIOS will reserve some
additional address space for use by devices detected by the BIOS
Previous Posts In This Thread:
How much Memory can Vista 32 bit support?
My machine has 4 GB of RAM. I need to know absolutely if Vista 32 Bit RTM
will support this? I know for a fact that Windows XP Professional 32 bit
only supports up to 3 GB. I am certain Vista 64 will. Please do not answer
this question unless you are certain
Thank you
Hi,I'm certain that you will not be able to use all 4GB with the x86 version.
Hi
I'm certain that you will not be able to use all 4GB with the x86 version.
This is a limitation of 32-bit processing. There is only 4GB of addressing
space and some of this is used by the system. How much depends on the
hardware, but it is the remainder that can be used by memory addressing. So,
the max you can address is 4GB minus however much your system requires. This
figure could be 3.2GB, or only 2.9GB, or some other figure entirely
Yes, you are correct that the x64 version will allow you to use all 4GB.
There are a tremendously larger amount of addresses available under 64-bit
processing
--
Best of Luck
Rick Rogers, aka "Nutcase" - Microsoft MV
http://mvp.support.microsoft.com
Windows help - www.rickrogers.or
All 32bit operating systems can see a maximum of 4GB.
All 32bit operating systems can see a maximum of 4GB. It is a mathematical
limit, not the OS. Vista x86 like XP x86 will show a little over 3GB on
System Properties. This is normal. The "missing" ram is not really
missing. It is used by the system and not presented to the user. There is
a range of addresses at the upper end of 4GB that is reserved. In a system
with less than 4GB these are logical addresses and are handled by the system
that way. However, when the system has 4GB it must block out physical ram
to protect the reserved addresses. In addition, the BIOS will reserve some
additional address space for use by devices detected by the BIOS
Colin, Rick, I thank you both for the response.
Colin, Rick, I thank you both for the response. Being a technet
subscriber, I have been agonizing (yes i read the other threads on this)
whether I should go with 64 bit or 32 bit. Colin, if I understand you, the 4
GB of RAM will be used as needed by Vista 32 bit, but just not seen by the
OS, is that correct
Seasons Greetings to one and all who read this!
By the OS and the BIOS.
By the OS and the BIOS.
In a 64bit system the OS uses much higher logical address spaces so the OS
will see all 4GB of physical ram. Only when you had 128GB of physical ram
on a 64bit system would you see any physical ram reserved.
The "missing" ram is seen by the OS, just not by the user.
The "missing" ram is seen by the OS, just not by the user.
Colin, the problem I am facing is that I have an ultra ATA Adaptec card.
Colin, the problem I am facing is that I have an ultra ATA Adaptec card. It
is impossible to find 64 bit drivers. It may never be supported. I need
this card. It works fine with Vista 32 bit. However, I have 4 Gb of RAM.
My wife is arguing with me to upgrade to the 32 bit version of Vista, and
remove a RAM chip, as she believes that Vista 32 will not use it in any way.
So, my question, if I upgrade to vista 32 bit,
will the OS be able to use the extra RAM? Or will it just be a dummy chip
sitting there? I understand I won't see it except when the PC posts during
startup..
Thank You!
Thank You! It is being used, just not seen in the properties. I believe I
will go with the 32 bit version and keep the extra RAM!
I am in Henderson
Nevada, where is everyone else at?
Re: How much Memory can Vista 32 bit support?
Why not go with the 64-bit version and actually be able to USE all 4GB?
Tom Lake
Malone, NY
Whereas I do technical support VIA the phone for a living it is different when
Whereas I do technical support VIA the phone for a living it is different
when it is your own hardware. I did find an article on MS that addresses
this issue specifically: for one and all:
http://www.microsoft.com/whdc/system/platform/server/PAE/PAEmem.mspx
Re: How much Memory can Vista 32 bit support?
Tom: Because it is almost impossible to find some 64 bit drivers for my
hardware.
As I study the problem further, I see that Windows 32 bit actually does use
up to 4 GB of RAM. The system apparently reserves 1 GB of RAM for use, such
as onboard graphics, etc.
The ram allocation will done on the same principles as XP.
The ram allocation will done on the same principles as XP.
It is not a dummy chip under Vista any more than it is under XP.
It relieves the OS from having to use logical address space translation but
because it is system address space the OS must fence it off to keep user
programs from colliding with the system. There is no difference between XP
and Vista in this regard except that Vista may fence off a little more than
XP needed.
Vista does indeed use the space. The user can't tell much difference
between 3GB and 4GB but the OS sure can.
Re: How much Memory can Vista 32 bit support?
He cannot find a 64bit driver for a needed card.
I believe that the PAE swich only applies to 32bit editions of Server.
I believe that the PAE swich only applies to 32bit editions of Server.
From what I've learned, the XP boot.
From what I've learned, the XP boot.ini by default addresses 2 GB of RAM for
programs.
however, if you add a 3 GB parameter to Windows XP boot.ini, this will be
allocated as needed by the OS thus:
[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP
Professional" /noexecute=optin /fastdetect /3GB
I simply added the 3GB and restarted, with no noticeable difference. The
missing 1 GB belongs to Windows XP. I presume when I upgrade to Vista 32 bit
it will be similar.
Re: How much Memory can Vista 32 bit support?
A word of caution: You might have seen the occasional Windows Server
deployment in which there was a /3GB switch used in the server???s BOOT.INI
file. The /3GB switch changes the memory allocation so that Windows is only
allocated 1 GB of address space, and user mode processes are allocated 3 GB
of address space. Splitting the address space like this helps Windows to
better manage high demand applications such as Exchange Server. However,
Windows is configured to have a 2 GB address space for the operating system
for a reason. If you use the /3GB switch, you can severely impact Windows
ability to run multiple applications simultaneously. Furthermore, you should
never use the /3GB switch on Small Business Server or on a domain controller.
Re: How much Memory can Vista 32 bit support?
More wisdom: So what does this 4 GB limit mean for 32-bit machines running a
Windows operating system? Windows is designed to address a full 4 GB memory
space. Windows splits the 4 GB of available memory address space into two
separate 2 GB address spaces. One of the 2 GB address spaces is used by the
Windows operating system, and the other 2 GB address space is used for user
mode processes (applications).
It's not just Windows, it's all systems.
It's not just Windows, it's all systems. This is not OS specific, this is a
result of the BIOS. The system cna only "address" up to 32-bits of ram. When
hardware communicates, you're really just sending data to it just like you
would store data in memory. This is why hardware in your system uses a
"memory range".
There is no way around it in 32-bit processing, no special switches, no file
replacements, no nothing. The maximum addressable space is 4GB--period. Your
SYSTEM (not OS) has to use a certain amount of that to be able to
communicate with devices.
A 64-bit OS does not run into this limitation.
Re: How much Memory can Vista 32 bit support?
Jon Acord wrote:
1st hand experience m8...... i have 4x 1gb sticks in my rig. ran 32bit
vista, and it was the same ram limitaion than XP 32bit does - around
2.8gb seeable/useable.
for me to see ALL 4gb (4096mb to be precise) i've had to goto vista 64bit.
not quite as simple as that tho..... different versions of vista have
max limitations
see http://support.teloep.org/vistaver.htm for more info. gives both
32bit and 64bit limitations.
so just ya know, 100% definate on above info. 1st hand experience.
tim
So how much RAM does a 32 bit OS see?
Well mine sees more than 4Gb
32 bit vista home premium..do not believe then see my attachment here>>>> http://www.mypcclinic.com/forums/showthread.php?p=229028#post229028
Can anyone of you experts explain?
So first hand experiences experts how much
Well mine sees more than 4Gb
32 bit vista home premium..do not believe then see my attachment here>>>> http://www.mypcclinic.com/forums/showthread.php?p=229028#post229028
Can anyone of you experts explain?
why mine sees all of 8GB?
Ok experience experts how do u explain this?
I have 4 sticks of 2gb each pc-6400 so why does vista 32 bit home premium see 8gb of ram
do not believe..see my attachment here>>>> http://www.mypcclinic.com/forums/showthread.php?t=23401
32 bit operating systems
2 raised to the 32nd power is 4gig. So a 32 bit system can address 4gig of distinct memory space or addresses (actually 2^32 is a bit more than 4gig). The video card and other I/O devices are mapped into this same memory space, therefore, not all the ram will be used because the system cannot address both video and system memory in the same address space. It's one or the other. For instance, if you have a 256meg video card then the system can address 4gig minus 256meg of the ram. This is probably why Dell only puts 3gig of ram in their Vista machines. Now, if you have a 64 bit system then it's 2 raised to the 64th power. Reason for using 2 is because a computer is a binary machine so there are only 2 states, on or off.
Submitted via EggHeadCafe - Software Developer Portal of Choice
Silverlight: Handling Cross-Domain Images and Gifs
http://www.eggheadcafe.com/tutorial...45-6b76a40ea43d/silverlight-handling-cro.aspx
You know what's weird?
My friend is running a 32bit windows XP Pro
and he is seeing 5gb of ram when he goes into task manager.
In reality he has 6gb of ram installed, but seems like windows reserved 1 gb for something else. Anyway he can see 5 not 3.... isn't that weird?
So I am basically wondering why this is possible!!!
Thanks ~
Colin Barnhorst wrote:
All 32bit operating systems can see a maximum of 4GB.
16-Dec-06
All 32bit operating systems can see a maximum of 4GB. It is a mathematical
limit, not the OS. Vista x86 like XP x86 will show a little over 3GB on
System Properties. This is normal. The "missing" ram is not really
missing. It is used by the system and not presented to the user. There is
a range of addresses at the upper end of 4GB that is reserved. In a system
with less than 4GB these are logical addresses and are handled by the system
that way. However, when the system has 4GB it must block out physical ram
to protect the reserved addresses. In addition, the BIOS will reserve some
additional address space for use by devices detected by the BIOS
Previous Posts In This Thread:
How much Memory can Vista 32 bit support?
My machine has 4 GB of RAM. I need to know absolutely if Vista 32 Bit RTM
will support this? I know for a fact that Windows XP Professional 32 bit
only supports up to 3 GB. I am certain Vista 64 will. Please do not answer
this question unless you are certain
Thank you
Hi,I'm certain that you will not be able to use all 4GB with the x86 version.
Hi
I'm certain that you will not be able to use all 4GB with the x86 version.
This is a limitation of 32-bit processing. There is only 4GB of addressing
space and some of this is used by the system. How much depends on the
hardware, but it is the remainder that can be used by memory addressing. So,
the max you can address is 4GB minus however much your system requires. This
figure could be 3.2GB, or only 2.9GB, or some other figure entirely
Yes, you are correct that the x64 version will allow you to use all 4GB.
There are a tremendously larger amount of addresses available under 64-bit
processing
--
Best of Luck
Rick Rogers, aka "Nutcase" - Microsoft MV
http://mvp.support.microsoft.com
Windows help - www.rickrogers.or
All 32bit operating systems can see a maximum of 4GB.
All 32bit operating systems can see a maximum of 4GB. It is a mathematical
limit, not the OS. Vista x86 like XP x86 will show a little over 3GB on
System Properties. This is normal. The "missing" ram is not really
missing. It is used by the system and not presented to the user. There is
a range of addresses at the upper end of 4GB that is reserved. In a system
with less than 4GB these are logical addresses and are handled by the system
that way. However, when the system has 4GB it must block out physical ram
to protect the reserved addresses. In addition, the BIOS will reserve some
additional address space for use by devices detected by the BIOS
Colin, Rick, I thank you both for the response.
Colin, Rick, I thank you both for the response. Being a technet
subscriber, I have been agonizing (yes i read the other threads on this)
whether I should go with 64 bit or 32 bit. Colin, if I understand you, the 4
GB of RAM will be used as needed by Vista 32 bit, but just not seen by the
OS, is that correct
Seasons Greetings to one and all who read this!
By the OS and the BIOS.
By the OS and the BIOS.
In a 64bit system the OS uses much higher logical address spaces so the OS
will see all 4GB of physical ram. Only when you had 128GB of physical ram
on a 64bit system would you see any physical ram reserved.
The "missing" ram is seen by the OS, just not by the user.
The "missing" ram is seen by the OS, just not by the user.
Colin, the problem I am facing is that I have an ultra ATA Adaptec card.
Colin, the problem I am facing is that I have an ultra ATA Adaptec card. It
is impossible to find 64 bit drivers. It may never be supported. I need
this card. It works fine with Vista 32 bit. However, I have 4 Gb of RAM.
My wife is arguing with me to upgrade to the 32 bit version of Vista, and
remove a RAM chip, as she believes that Vista 32 will not use it in any way.
So, my question, if I upgrade to vista 32 bit,
will the OS be able to use the extra RAM? Or will it just be a dummy chip
sitting there? I understand I won't see it except when the PC posts during
startup..
Thank You!
Thank You! It is being used, just not seen in the properties. I believe I
will go with the 32 bit version and keep the extra RAM!
I am in HendersonNevada, where is everyone else at?
Re: How much Memory can Vista 32 bit support?
Why not go with the 64-bit version and actually be able to USE all 4GB?
Tom Lake
Malone, NY
Whereas I do technical support VIA the phone for a living it is different when
Whereas I do technical support VIA the phone for a living it is different
when it is your own hardware. I did find an article on MS that addresses
this issue specifically: for one and all:
http://www.microsoft.com/whdc/system/platform/server/PAE/PAEmem.mspx
Re: How much Memory can Vista 32 bit support?
Tom: Because it is almost impossible to find some 64 bit drivers for my
hardware.
As I study the problem further, I see that Windows 32 bit actually does use
up to 4 GB of RAM. The system apparently reserves 1 GB of RAM for use, such
as onboard graphics, etc.
The ram allocation will done on the same principles as XP.
The ram allocation will done on the same principles as XP.
It is not a dummy chip under Vista any more than it is under XP.
It relieves the OS from having to use logical address space translation but
because it is system address space the OS must fence it off to keep user
programs from colliding with the system. There is no difference between XP
and Vista in this regard except that Vista may fence off a little more than
XP needed.
Vista does indeed use the space. The user can't tell much difference
between 3GB and 4GB but the OS sure can.
Re: How much Memory can Vista 32 bit support?
He cannot find a 64bit driver for a needed card.
I believe that the PAE swich only applies to 32bit editions of Server.
I believe that the PAE swich only applies to 32bit editions of Server.
From what I've learned, the XP boot.
From what I've learned, the XP boot.ini by default addresses 2 GB of RAM for
programs.
however, if you add a 3 GB parameter to Windows XP boot.ini, this will be
allocated as needed by the OS thus:
[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP
Professional" /noexecute=optin /fastdetect /3GB
I simply added the 3GB and restarted, with no noticeable difference. The
missing 1 GB belongs to Windows XP. I presume when I upgrade to Vista 32 bit
it will be similar.
Re: How much Memory can Vista 32 bit support?
A word of caution: You might have seen the occasional Windows Server
deployment in which there was a /3GB switch used in the server???s BOOT.INI
file. The /3GB switch changes the memory allocation so that Windows is only
allocated 1 GB of address space, and user mode processes are allocated 3 GB
of address space. Splitting the address space like this helps Windows to
better manage high demand applications such as Exchange Server. However,
Windows is configured to have a 2 GB address space for the operating system
for a reason. If you use the /3GB switch, you can severely impact Windows
ability to run multiple applications simultaneously. Furthermore, you should
never use the /3GB switch on Small Business Server or on a domain controller.
Re: How much Memory can Vista 32 bit support?
More wisdom: So what does this 4 GB limit mean for 32-bit machines running a
Windows operating system? Windows is designed to address a full 4 GB memory
space. Windows splits the 4 GB of available memory address space into two
separate 2 GB address spaces. One of the 2 GB address spaces is used by the
Windows operating system, and the other 2 GB address space is used for user
mode processes (applications).
It's not just Windows, it's all systems.
It's not just Windows, it's all systems. This is not OS specific, this is a
result of the BIOS. The system cna only "address" up to 32-bits of ram. When
hardware communicates, you're really just sending data to it just like you
would store data in memory. This is why hardware in your system uses a
"memory range".
There is no way around it in 32-bit processing, no special switches, no file
replacements, no nothing. The maximum addressable space is 4GB--period. Your
SYSTEM (not OS) has to use a certain amount of that to be able to
communicate with devices.
A 64-bit OS does not run into this limitation.
Re: How much Memory can Vista 32 bit support?
Jon Acord wrote:
1st hand experience m8...... i have 4x 1gb sticks in my rig. ran 32bit
vista, and it was the same ram limitaion than XP 32bit does - around
2.8gb seeable/useable.
for me to see ALL 4gb (4096mb to be precise) i've had to goto vista 64bit.
not quite as simple as that tho..... different versions of vista have
max limitations
see http://support.teloep.org/vistaver.htm for more info. gives both
32bit and 64bit limitations.
so just ya know, 100% definate on above info. 1st hand experience.
tim
So how much RAM does a 32 bit OS see?
Well mine sees more than 4Gb
32 bit vista home premium..do not believe then see my attachment here>>>> http://www.mypcclinic.com/forums/showthread.php?p=229028#post229028
Can anyone of you experts explain?
So first hand experiences experts how much
Well mine sees more than 4Gb
32 bit vista home premium..do not believe then see my attachment here>>>> http://www.mypcclinic.com/forums/showthread.php?p=229028#post229028
Can anyone of you experts explain?
why mine sees all of 8GB?
Ok experience experts how do u explain this?
I have 4 sticks of 2gb each pc-6400 so why does vista 32 bit home premium see 8gb of ram
do not believe..see my attachment here>>>> http://www.mypcclinic.com/forums/showthread.php?t=23401
32 bit operating systems
2 raised to the 32nd power is 4gig. So a 32 bit system can address 4gig of distinct memory space or addresses (actually 2^32 is a bit more than 4gig). The video card and other I/O devices are mapped into this same memory space, therefore, not all the ram will be used because the system cannot address both video and system memory in the same address space. It's one or the other. For instance, if you have a 256meg video card then the system can address 4gig minus 256meg of the ram. This is probably why Dell only puts 3gig of ram in their Vista machines. Now, if you have a 64 bit system then it's 2 raised to the 64th power. Reason for using 2 is because a computer is a binary machine so there are only 2 states, on or off.
Submitted via EggHeadCafe - Software Developer Portal of Choice
Silverlight: Handling Cross-Domain Images and Gifs
http://www.eggheadcafe.com/tutorial...45-6b76a40ea43d/silverlight-handling-cro.aspx
G
Guest
Are you retarded
--
..
--
--
..
--
Hey guys,
You know what's weird?
My friend is running a 32bit windows XP Pro
and he is seeing 5gb of ram when he goes into task manager.
In reality he has 6gb of ram installed, but seems like windows reserved 1
gb for something else. Anyway he can see 5 not 3.... isn't that weird?
So I am basically wondering why this is possible!!!
Thanks ~
Colin Barnhorst wrote:
All 32bit operating systems can see a maximum of 4GB.
16-Dec-06
All 32bit operating systems can see a maximum of 4GB. It is a
mathematical
limit, not the OS. Vista x86 like XP x86 will show a little over 3GB on
System Properties. This is normal. The "missing" ram is not really
missing. It is used by the system and not presented to the user. There
is
a range of addresses at the upper end of 4GB that is reserved. In a
system
with less than 4GB these are logical addresses and are handled by the
system
that way. However, when the system has 4GB it must block out physical ram
to protect the reserved addresses. In addition, the BIOS will reserve
some
additional address space for use by devices detected by the BIOS.
Previous Posts In This Thread:
How much Memory can Vista 32 bit support?
My machine has 4 GB of RAM. I need to know absolutely if Vista 32 Bit RTM
will support this? I know for a fact that Windows XP Professional 32 bit
only supports up to 3 GB. I am certain Vista 64 will. Please do not
answer
this question unless you are certain.
Thank you
Hi,I'm certain that you will not be able to use all 4GB with the x86
version.
Hi,
I'm certain that you will not be able to use all 4GB with the x86 version.
This is a limitation of 32-bit processing. There is only 4GB of addressing
space and some of this is used by the system. How much depends on the
hardware, but it is the remainder that can be used by memory addressing.
So,
the max you can address is 4GB minus however much your system requires.
This
figure could be 3.2GB, or only 2.9GB, or some other figure entirely.
Yes, you are correct that the x64 version will allow you to use all 4GB.
There are a tremendously larger amount of addresses available under 64-bit
processing.
--
Best of Luck,
Rick Rogers, aka "Nutcase" - Microsoft MVP
Windows help - www.rickrogers.org
All 32bit operating systems can see a maximum of 4GB.
All 32bit operating systems can see a maximum of 4GB. It is a
mathematical
limit, not the OS. Vista x86 like XP x86 will show a little over 3GB on
System Properties. This is normal. The "missing" ram is not really
missing. It is used by the system and not presented to the user. There
is
a range of addresses at the upper end of 4GB that is reserved. In a
system
with less than 4GB these are logical addresses and are handled by the
system
that way. However, when the system has 4GB it must block out physical ram
to protect the reserved addresses. In addition, the BIOS will reserve
some
additional address space for use by devices detected by the BIOS.
Colin, Rick, I thank you both for the response.
Colin, Rick, I thank you both for the response. Being a technet
subscriber, I have been agonizing (yes i read the other threads on this)
whether I should go with 64 bit or 32 bit. Colin, if I understand you,
the 4
GB of RAM will be used as needed by Vista 32 bit, but just not seen by the
OS, is that correct?
Seasons Greetings to one and all who read this!
By the OS and the BIOS.
By the OS and the BIOS.
In a 64bit system the OS uses much higher logical address spaces so the OS
will see all 4GB of physical ram. Only when you had 128GB of physical ram
on a 64bit system would you see any physical ram reserved.
The "missing" ram is seen by the OS, just not by the user.
The "missing" ram is seen by the OS, just not by the user.
Colin, the problem I am facing is that I have an ultra ATA Adaptec card.
Colin, the problem I am facing is that I have an ultra ATA Adaptec card.
It
is impossible to find 64 bit drivers. It may never be supported. I need
this card. It works fine with Vista 32 bit. However, I have 4 Gb of
RAM.
My wife is arguing with me to upgrade to the 32 bit version of Vista, and
remove a RAM chip, as she believes that Vista 32 will not use it in any
way.
So, my question, if I upgrade to vista 32 bit,
will the OS be able to use the extra RAM? Or will it just be a dummy chip
sitting there? I understand I won't see it except when the PC posts during
startup..
Thank You!
Thank You! It is being used, just not seen in the properties. I believe
I
will go with the 32 bit version and keep the extra RAM!
Henderson
Nevada, where is everyone else at?
Re: How much Memory can Vista 32 bit support?
Why not go with the 64-bit version and actually be able to USE all 4GB?
Tom Lake
Malone, NY
Whereas I do technical support VIA the phone for a living it is different
when
Whereas I do technical support VIA the phone for a living it is different
when it is your own hardware. I did find an article on MS that addresses
this issue specifically: for one and all:
http://www.microsoft.com/whdc/system/platform/server/PAE/PAEmem.mspx
Re: How much Memory can Vista 32 bit support?
Tom: Because it is almost impossible to find some 64 bit drivers for my
hardware.
As I study the problem further, I see that Windows 32 bit actually does
use
up to 4 GB of RAM. The system apparently reserves 1 GB of RAM for use,
such
as onboard graphics, etc.
The ram allocation will done on the same principles as XP.
The ram allocation will done on the same principles as XP.
It is not a dummy chip under Vista any more than it is under XP.
It relieves the OS from having to use logical address space translation
but
because it is system address space the OS must fence it off to keep user
programs from colliding with the system. There is no difference between
XP
and Vista in this regard except that Vista may fence off a little more
than
XP needed.
Vista does indeed use the space. The user can't tell much difference
between 3GB and 4GB but the OS sure can.
Re: How much Memory can Vista 32 bit support?
He cannot find a 64bit driver for a needed card.
I believe that the PAE swich only applies to 32bit editions of Server.
I believe that the PAE swich only applies to 32bit editions of Server.
From what I've learned, the XP boot.
From what I've learned, the XP boot.ini by default addresses 2 GB of RAM
for
programs.
however, if you add a 3 GB parameter to Windows XP boot.ini, this will be
allocated as needed by the OS thus:
[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP
Professional" /noexecute=optin /fastdetect /3GB
I simply added the 3GB and restarted, with no noticeable difference. The
missing 1 GB belongs to Windows XP. I presume when I upgrade to Vista 32
bit
it will be similar.
Re: How much Memory can Vista 32 bit support?
A word of caution: You might have seen the occasional Windows Server
deployment in which there was a /3GB switch used in the server???s
BOOT.INI
file. The /3GB switch changes the memory allocation so that Windows is
only
allocated 1 GB of address space, and user mode processes are allocated 3
GB
of address space. Splitting the address space like this helps Windows to
better manage high demand applications such as Exchange Server. However,
Windows is configured to have a 2 GB address space for the operating
system
for a reason. If you use the /3GB switch, you can severely impact Windows
ability to run multiple applications simultaneously. Furthermore, you
should
never use the /3GB switch on Small Business Server or on a domain
controller.
Re: How much Memory can Vista 32 bit support?
More wisdom: So what does this 4 GB limit mean for 32-bit machines
running a
Windows operating system? Windows is designed to address a full 4 GB
memory
space. Windows splits the 4 GB of available memory address space into two
separate 2 GB address spaces. One of the 2 GB address spaces is used by
the
Windows operating system, and the other 2 GB address space is used for
user
mode processes (applications).
It's not just Windows, it's all systems.
It's not just Windows, it's all systems. This is not OS specific, this is
a
result of the BIOS. The system cna only "address" up to 32-bits of ram.
When
hardware communicates, you're really just sending data to it just like you
would store data in memory. This is why hardware in your system uses a
"memory range".
There is no way around it in 32-bit processing, no special switches, no
file
replacements, no nothing. The maximum addressable space is 4GB--period.
Your
SYSTEM (not OS) has to use a certain amount of that to be able to
communicate with devices.
A 64-bit OS does not run into this limitation.
Re: How much Memory can Vista 32 bit support?
Jon Acord wrote:
1st hand experience m8...... i have 4x 1gb sticks in my rig. ran 32bit
vista, and it was the same ram limitaion than XP 32bit does - around
2.8gb seeable/useable.
for me to see ALL 4gb (4096mb to be precise) i've had to goto vista 64bit.
not quite as simple as that tho..... different versions of vista have
max limitations
see http://support.teloep.org/vistaver.htm for more info. gives both
32bit and 64bit limitations.
so just ya know, 100% definate on above info. 1st hand experience.
tim
So how much RAM does a 32 bit OS see?
Well mine sees more than 4Gb
32 bit vista home premium..do not believe then see my attachment here>>>>
http://www.mypcclinic.com/forums/showthread.php?p=229028#post229028
Can anyone of you experts explain?
So first hand experiences experts how much
Well mine sees more than 4Gb
32 bit vista home premium..do not believe then see my attachment here>>>>
http://www.mypcclinic.com/forums/showthread.php?p=229028#post229028
Can anyone of you experts explain?
why mine sees all of 8GB?
Ok experience experts how do u explain this?
I have 4 sticks of 2gb each pc-6400 so why does vista 32 bit home premium
see 8gb of ram
do not believe..see my attachment here>>>>
http://www.mypcclinic.com/forums/showthread.php?t=23401
32 bit operating systems
2 raised to the 32nd power is 4gig. So a 32 bit system can address 4gig of
distinct memory space or addresses (actually 2^32 is a bit more than
4gig). The video card and other I/O devices are mapped into this same
memory space, therefore, not all the ram will be used because the system
cannot address both video and system memory in the same address space.
It's one or the other. For instance, if you have a 256meg video card then
the system can address 4gig minus 256meg of the ram. This is probably why
Dell only puts 3gig of ram in their Vista machines. Now, if you have a 64
bit system then it's 2 raised to the 64th power. Reason for using 2 is
because a computer is a binary machine so there are only 2 states, on or
off.
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Guest
I was I forgot to snip
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Gordon
32 Bit Windows can only USE about 3.3 GB RAM. Why has your friend put more
than 4 GB in?
Waste of money.
A
Alias
Gordon said:
I have XP 32 bit with 4 GBs installed and the system shows 3.5.
G
Gordon
Alias said:
<Pedant>! It all depends on the hardware. The point is, putting more than
4GB in a system running a 32 bit version of Windows (unless it's a server
OS) is totally pointless and a complete waste of money...
P
Peter Foldes
Troll alert
G
Gordon
Peter Foldes said:
WHERE? What's the point of posting what you did?
P
Peter Foldes
Gordon
The poster is trolling. The person in question is also replying as Err and has many
namesakes
The poster is trolling. The person in question is also replying as Err and has many
namesakes
K
kevpan815
Peter Foldes wrote: > Gordon > > The poster is trolling. The person in
question is also replying as Err and has many > namesakes > > -- >
Peter > > Please Reply to Newsgroup for the benefit of others >
Requests for assistance by email can not and will not be acknowledged.%[email protected]... > > > > "Peter Foldes"
(e-mail address removed)... > >> Troll alert > >> > > > > WHERE?
What's the point of posting what you did?
question is also replying as Err and has many > namesakes > > -- >
Peter > > Please Reply to Newsgroup for the benefit of others >
Requests for assistance by email can not and will not be acknowledged.%[email protected]... > > > > "Peter Foldes"
(e-mail address removed)... > >> Troll alert > >> > > > > WHERE?
What's the point of posting what you did?