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Microsoft® Windows® Internals: Microsoft Windows Server™ 2003, Windows XP, and Windows 2000, 4th Edition by David A. Solomon, Mark E. Russinovich

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Introduction to the Memory Manager

By default, the virtual size of a process on 32-bit Windows is 2 GB. If the image is marked specially as large address space aware, and the system is booted with a special switch (described later in this chapter), a 32-bit process can grow to 3 GB on 32-bit Windows and up to 4 GB on 64-bit Windows. The process virtual address space size on 64-bit Windows is 7152 GB on IA-64 systems and 8192 GB on x64 systems. (This value could be increased in future releases.)

As you saw in Chapter 2 (specifically in Table 2-4), the maximum amount of physical memory supported by Windows ranges from 2 GB to 1024 GB, depending on which version and edition of Windows you are running. Because the virtual address space might be larger ...

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