Supported Memory Size - Windows Vista And Windows XP
Regardless of which version of Windows you are using, all 32 bit systems are limited to a maximum of 4 GB of RAM. The only exceptions to this rule are the Starter Editions, which are primarily targeted at developing nations.
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Memory Limit | ||
---|---|---|
Windows Vista | 32 bit | 64 bit |
Ultimate | 4 GB | 128 GB |
Enterprise | 4 GB | 128 GB |
Business | 4 GB | 128 GB |
Home Premium | 4 GB | 16 GB |
Home Basic | 4 GB | 8 GB |
Starter | 1 GB | - |
There is only a single 64 bit version of Windows XP, which is identical in feature set with Windows XP Professional. From a technical perspective, it is built around the Windows 2003 Server kernel (Version 5.2).
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Memory Limit | ||
---|---|---|
Windows XP | 32 bit | 64 bit |
Professional | 4 GB | 128 GB |
Home | 4 GB | - |
Starter Edition | 512 MB | - |