RAM limitation base on Operating System
Memory Limit
Windows Vista 32-bit 64-bit
Ultimate
Enterprise Business Home Premium Home Basic Starter |
4 GB 128 GB
4 GB 128 GB 4 GB 128 GB 4 GB 16 GB 4 GB 8GB 1GB - |
Windows XP 32-bit 64-bit
Professional
Home Starter Edition |
4 GB 128 GB
4 GB _ 512 MB _ |
The amount of memory that your system reports, is not always the amount of actual installed memory. For example, if you have 4GB installed, 32 bit versions of Windows will typically report 3.2GB due to a limitation of Windows itself. Also note that different Windows programs report available and maximum memory differently, which can be confusing. If you find that you need more memory, we suggest expanding your system memory, since this is the most effective performance increase, and the one that is easiest to perform.