Maximum Supported RAM on Windows XP

[mahmoudmga]

Hi
How much Maximum Supported RAM on Windows XP basic ?
Please answer above question and inform me a document on microsoft
site or a valid reference about this issue.
Thanks.

 

[John John (MVP)]

Hi
How much Maximum Supported RAM on Windows XP basic ?
Please answer above question and inform me a document on microsoft
site or a valid reference about this issue.
Thanks.

Memory Limits for Windows Releases
http://msdn.microsoft.com/en-us/library/aa366778.aspx

John

 

[Tim Slattery]

Hi
How much Maximum Supported RAM on Windows XP basic ?
Please answer above question and inform me a document on microsoft
site or a valid reference about this issue.

http://members.cox.net/slatteryt/RAM.html

XP, and Microsoft's other 32-bit client operating systems, have a
32-bit address space. That works out to 4GB. But that address space
must be used to access your video RAM, BIOS, and a few other things
besides your system RAM. So you will be able to use something like
3.5GB of your RAM.

Oh, BTW, there is no such thing as XP Basic. XP comes in Home and
Professional. There's a 64-bit version of Pro which would get rid of
this limit (but you'd have to find drivers for it). Vista comes in
Basic, Home Premium, Business, Enterprise, and Ultimate. All versions
come in 32-bit and 64-bit flavors. All 64-bit Vista versions can
handle much more than 4GB RAM.

 

[Ken Blake]

(e-mail address removed)...

How much Maximum Supported RAM on Windows XP basic ?

The same as on all other 32-bit versions of XP. Read my following standard
post on the subject:

All 32-bit versions of Windows (not just XP) have a 4GB address space.
That's the theoretical upper limit beyond which you can not go. But you
can't use the entire 4GB of address space. Even though you have a 4GB
address space, you can only use *around* 3.1GB of RAM.

That's because some of that space is used by hardware and is not available
to the operating system and applications. The amount you can use varies,
depending on what hardware you have installed, but is usually around 3.1GB.

Note that the hardware is using the address *space*, not the actual RAM
itself. The rest of the RAM goes unused because there is no address space to
map it too.

Please answer above question and inform me a document on microsoft
site or a valid reference about this issue.

Sorry, I don't have a reference handy, and don't have the time to Google for
one. Either Google it yourself, or wait for someone else to give you one.

 

[HeyBub]

Hi
How much Maximum Supported RAM on Windows XP basic ?
Please answer above question and inform me a document on microsoft
site or a valid reference about this issue.
Thanks.

Instead of trying to remember the number, here's how you can figure it out
for yourself; anytime, anyplace. Do this:
1, 2, 4, 8, 16, 32, 64,....

for a total of 32 times (32-bit address space).

 

[David H. Lipman]

From: "Tim Slattery" <[email protected]>


| http://members.cox.net/slatteryt/RAM.html

| XP, and Microsoft's other 32-bit client operating systems, have a
| 32-bit address space. That works out to 4GB. But that address space
| must be used to access your video RAM, BIOS, and a few other things
| besides your system RAM. So you will be able to use something like
| 3.5GB of your RAM.

| Oh, BTW, there is no such thing as XP Basic. XP comes in Home and
| Professional. There's a 64-bit version of Pro which would get rid of
| this limit (but you'd have to find drivers for it). Vista comes in
| Basic, Home Premium, Business, Enterprise, and Ultimate. All versions
| come in 32-bit and 64-bit flavors. All 64-bit Vista versions can
| handle much more than 4GB RAM.

| --
| Tim Slattery
| MS MVP(Shell/User)
| (e-mail address removed)
| http://members.cox.net/slatteryt

XP also comes in the Media Edition flavour.
RAM = (2^32)-1 or ~2^32 minus OS overhead which can yield ~ 3.5GB of max. ram in 32 WinXP
flavours.