Re: XP And RAM



John John (MVP) wrote:
JD wrote:

I'm using XP home edition with SP3 and I have 4GB of RAM installed. From previous posts in this newsgroup I learned that 32-bit operating systems can only address 4GB of RAM.

I found this:

http://support.microsoft.com/kb/929605

It's talking about Vista but I noticed it says:

"WORKAROUND
For Windows Vista to use all 4 GB of memory on a computer that has 4 GB of memory installed, the computer must meet the following requirements:

The chipset must support at least 8 GB of address space. Chipsets that have this capability include the following:

Chipsets that support AMD processors that use socket F, socket 940, socket 939, or socket AM2. These chipsets include any AMD socket and CPU combination in which the memory controller resides in the CPU.

The CPU must support the x64 instruction set. The AMD64 CPU and the Intel EM64T CPU support this instruction set.

The BIOS must support the memory remapping feature

An x64 (64-bit) version of Windows Vista must be used."


Even if my AMD AM2 processor and my BIOS meet the above requirements, I'm still not going to be able to address more than 4GB of memory since my XP is a 32-bit OS?

That's correct, you need a 64-bit operating system to address more than 4GB of RAM. Some of the 32-bit Server versions can address more than 4GB with the use of PAE but that is another kettle of fish, Windows XP 32-bit cannot do it.

John

John

Thanks.

--
JD..
.



Relevant Pages

  • Re: XP And RAM
    ... For Windows Vista to use all 4 GB of memory on a computer that has 4 GB of memory installed, the computer must meet the following requirements: ... Chipsets that support AMD processors that use socket F, socket 940, socket 939, or socket AM2. ... These chipsets include any AMD socket and CPU combination in which the memory controller resides in the CPU. ...
    (microsoft.public.windowsxp.basics)
  • Re: XP And RAM
    ... For Windows Vista to use all 4 GB of memory on a computer that has ... The chipset must support at least 8 GB of address space. ... Chipsets that support AMD processors that use socket F, socket 940, ... and CPU combination in which the memory controller resides in the ...
    (microsoft.public.windowsxp.basics)
  • Re: XP And RAM
    ... For Windows Vista to use all 4 GB of memory on a computer that has ... The chipset must support at least 8 GB of address space. ... Chipsets that support AMD processors that use socket F, socket 940, ... and CPU combination in which the memory controller resides in the ...
    (microsoft.public.windowsxp.basics)
  • XP And RAM
    ... For Windows Vista to use all 4 GB of memory on a computer that has 4 GB of memory installed, the computer must meet the following requirements: ... Chipsets that support AMD processors that use socket F, socket 940, socket 939, or socket AM2. ... These chipsets include any AMD socket and CPU combination in which the memory controller resides in the CPU. ...
    (microsoft.public.windowsxp.basics)
  • [OOPS] amrestore dies in kmem_cache_free 2.6.16.18 - cannot restore backups!
    ... CPU: L2 Cache: 1024K ... usbcore: registered new driver usbfs ... Using ACPI for IRQ routing ... USB Mass Storage support registered. ...
    (Linux-Kernel)

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