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Software => Operating Systems & Drivers => Topic started by: darkangel on April 12, 2009, 08:19:23 PM



Title: Maximum Addressable Memory (RAM) of Different Operating Systems
Post by: darkangel on April 12, 2009, 08:19:23 PM
Windows XP Starter Edition: 512 MB
Windows XP Home and Professional 32-bit: 4GB (but will register 3.25gb as some portion of memory are allocated for the system.)
Windows XP Pro 64-bit: 128 GB

32-bit Windows Vista Starter: 1GB
32-bit versions of Windows Vista Home Basic, Home Premium, Business, Enterprise, and Ultimate: 4GB
64-bit versions of Windows Vista Home Basic: 8GB
64-bit versions of Windows Vista Home Premium: 16GB
64-bit versions of Windows Vista Business, Enterprise, and Ultimate: 128GB

32-bit versions of Linux, Debian: 1gb (could be tweaked to use 4gb to 64gb using Physical Address Extension (PAE) (http://kerneltrap.org/node/2450))
32-bit Ubuntu version 6.10 upwards: 4gb
64-bit versions of Linux. 64TB

Server (32-bit):
2000 Advanced:    8 GB with PAE, 4GB without
2000 Datacenter:    32 GB with PAE, 4GB without
2003 Enterprise Edition:    32 GB with PAE, 4GB without
2003 R2 (or SP1) Enterprise Edition:    64 GB with PAE, 4GB without
2003 Datacenter Edition:    64 GB with PAE, 4GB without
2003 Standard Edition:    4 GB
2008 Enterprise or Datacenter Edition:    64 GB with PAE, 4GB without
2008 other editions:    4 GB

Server (64-bit):
2003 SP2 Datacenter Edition:    2 TB
2003 SP2 Enterprise Edition:    2 TB
2003 R2/SP1 Datacenter Edition:    1 TB
2003 R2 Enterprise Edition:    1 TB
2003 SP1 Enterprise Edition:    1 TB
2003 R2 Standard Edition:    32 GB
2003 Standard Edition SP1:    32 GB
2003 Datacenter Edition:    512 GB
2003 Enterprise Edition:    64 GB
2003 Standard Edition:    16 GB
2008 Datacenter:    2TB
2008 Enterprise:    2TB
2008 Standard:    32GB
2008 for Itanium-Based Systems:    2TB
Windows Web Server 2008:    32GB

sources:

http://www.xpfree.org/os_system_ram_limitations_guide.htm (http://www.xpfree.org/os_system_ram_limitations_guide.htm)
http://www.dansdata.com/askdan00015.htm (http://www.dansdata.com/askdan00015.htm)
http://www.mydigitallife.info/2007/01/14/windows-vista-32-bit-and-64-bit-x86-and-x64-maximum-supported-ram-physical-memory-limit/ (http://www.mydigitallife.info/2007/01/14/windows-vista-32-bit-and-64-bit-x86-and-x64-maximum-supported-ram-physical-memory-limit/)
http://en.wikipedia.org/wiki/Physical_Address_Extension (http://en.wikipedia.org/wiki/Physical_Address_Extension)
http://msdn.microsoft.com/en-us/library/aa366778(VS.85).aspx (http://msdn.microsoft.com/en-us/library/aa366778(VS.85).aspx)
http://www.memorydeal.net/physical-memory-limits-windows-server.php (http://www.memorydeal.net/physical-memory-limits-windows-server.php)
http://msdn.microsoft.com/en-us/library/aa366778.aspx#physical_memory_limits_windows_vista (http://msdn.microsoft.com/en-us/library/aa366778.aspx#physical_memory_limits_windows_vista)
http://msdn.microsoft.com/en-us/library/aa366778.aspx#physical_memory_limits_windows_xp (http://msdn.microsoft.com/en-us/library/aa366778.aspx#physical_memory_limits_windows_xp)



Title: Re: Maximum Addressable Memory (RAM) of Different Operating Systems
Post by: draw_paintatoms on April 13, 2009, 11:39:14 AM
Thanks bro dark! I will bookmark this page for reference.  8)
Many are asking why aren't they seeing a 4gb RAM after they installed 4GB on their Windows XP Pro 32bit. This explains why.
Quote
64-bit versions of Windows Vista Business, Enterprise, and Ultimate: 128GB
Can't imagine what I can do with this size of memory!   :D


Title: Re: Maximum Addressable Memory (RAM) of Different Operating Systems
Post by: ftracena on July 02, 2009, 01:38:55 PM
yup , but with currently available memory in market is only 4gb ram module, i think maybe a couple of more years, you can slot a 32gb ddr ram to [txtspk] mobo, (x4 pa so that makes it 128gb) think how powerful a 64bit pc's will become...wew


Title: Re: Maximum Addressable Memory (RAM) of Different Operating Systems
Post by: deboned on July 04, 2009, 05:36:02 PM
wow with 128GB of memory you forget and remove the pagefile.