At 08:02 PM 26/01/2007, rls wrote:
I read somewhere that in order for XP to truly run flat out that you needed
4 gb of memory. I no longer have the reference, but would like to re-read
like types of articles.
"Many PC musicians are still quite happy using 512MB of RAM, although
I suspect that the majority have now upgraded to 1GB, like me, so
that they can load more soft synths. An increasing number of
musicians want to install even more, perhaps to achieve greater
polyphony with soft samplers such as HALion and Kontakt, or they may
want to have multiple sampled loops in RAM for real-time
pitch-shifting and time compression/expansion. Once in RAM, such
loops can be accessed almost instantaneously, and you may be able to
reduce your soundcard's latency as a result.
It's comparatively easy to install and use up to 2GB of RAM with
Windows XP, but although most motherboards support 4GB and beyond,
making best use of more than 2GB can be tricky. The currently 32-bit
Windows XP supports an address range of 4GB, but if you install 4GB
of RAM it will, by default, only give a 32-bit application half of
this. Fortunately, Windows XP Professional SP2 (but not Home Edition)
users can add a '/3GB' switch to their Boot.ini file to force their
PCs to allocate up to 3GB to programs (see screenshot, overleaf). "
http://www.soundonsound.com/sos/may05/articles/pcnotes.htm
"Technically, 4GB is the max for a 32bit OS. Read the following:
http://www.microsoft.com/technet/sys...n/bootini.mspx /3GB
Increases the size of the user process address space from 2 GB to 3
GB (and therefore reduces the size of system space from 2 GB to 1
GB). Giving virtual-memory- intensive applications such as database
servers a larger address space can improve their performance. For an
application to take advantage of this feature, however, two
additional conditions must be met: the system must be running Windows
XP, Windows Server 2003, Windows NT 4 Enterprise Edition, Windows
2000 Advanced Server or Datacenter Server and the application .exe
must be flagged as a 3-GB-aware application. Applies to 32-bit systems only."
http://discussions.hardwarecentral.com/showthread.php?t=174937";
"Windows XP Professional and Windows Server 2003 Memory Support. The
maximum amount of memory that can be supported on Windows XP
Professional and Windows Server 2003 is also 4 GB. However, Windows
Server 2003, Enterprise Edition supports 32 GB of physical RAM and
Windows Server 2003, Datacenter Edition supports 64 GB of physical
RAM using the PAE feature.
The virtual address space of processes and applications is still
limited to 2 GB unless the /3GB switch is used in the Boot.ini file.
When the physical RAM in the system exceeds 16 GB and the /3GB switch
is used, the operating system will ignore the additional RAM until
the /3GB switch is removed. This is because of the increased size of
the kernel required to support more Page Table Entries. The
assumption is made that the administrator would rather not lose the
/3GB functionality silently and automatically; therefore, this
requires the administrator to explicitly change this setting.
The /3GB switch allocates 3 GB of virtual address space to an
application that uses IMAGE_FILE_LARGE_ADDRESS_AWARE in the process
header. This switch allows applications to address 1 GB of additional
virtual address space above 2 GB.
The virtual address space of processes and applications is still
limited to 2 GB, unless the /3GB switch is used in the Boot.ini file.
The following example shows how to add the /3GB parameter in the
Boot.ini file to enable application memory tuning:"
http://www.microsoft.com/whdc/system/platform/server/PAE/PAEmem.mspx
T
