With IMAGE_FILE_LARGE_ADDRESS_AWARE set (default):x64: 8 TBIntel Itanium-based systems: 7 TB2 GB with IMAGE_FILE_LARGE_ADDRESS_AWARE cleared核心态虚拟地址空间2 GBFrom 1 GB to a maximum of 2 GB with 4GT8 TB页池Limited by available kernel-mode virtual address space or the PagedPoolLimit registry key value. Windows Vista: Limited by available kernel-mode virtual address space. Starting with Windows Vista with Service Pack 1 (SP1), the paged pool can also be limited by the PagedPoolLimit registry key value.Windows Home Server and Windows Server 2003: 530 MBWindows XP: 490 MB128 GB Windows Server 2003 and Windows XP: Up to 128 GB depending on configuration and RAM.非页池Limited by available kernel-mode virtual address space, the NonPagedPoolLimit registry key value, or physical memory. Windows Vista: Limited only by kernel mode virtual address space and physical memory. Starting with Windows Vista with SP1, the nonpaged pool can also be limited by the NonPagedPoolLimit registry key value.Windows Home Server, Windows Server 2003, and Windows XP: 256 MB, or 128 MB with 4GT.75% of RAM up to a maximum of 128 GB Windows Vista: 40% of RAM up to a maximum of 128 GB.Windows Server 2003 and Windows XP: Up to 128 GB depending on configuration and RAM.System cache virtual address space (physical size limited only by physical memory)Limited by available kernel-mode virtual address space or the SystemCacheLimit registry key value.Windows Vista: Limited only by kernel mode virtual address space. Starting with Windows Vista with SP1, system cache virtual address space can also be limited by the SystemCacheLimit registry key value.Windows Home Server, Windows Server 2003, and Windows XP: 860 MB with LargeSystemCache registry key set and without 4GT; up to 448 MB with 4GT.Always 1 TB regardless of physical RAM Windows Server 2003 and Windows XP: Up to 1 TB depending on configuration and RAM.2. 物理内存的限制2.1 Windows 8VersionLimit on X86Limit on X64Windows 8 Enterprise4 GB512 GBWindows 8 Professional4 GB512 GBWindows 84 GB128 GB2.2 Windows Server 2012VersionLimit on X64Windows Server 2012 Datacenter4 TBWindows Server 2012 Standard4 TBWindows Server 2012 Essentials64 GBWindows Server 2012 Foundation32 GBWindows Storage Server 2012 Workgroup32 GBWindows Storage Server 2012 Standard4 TBHyper-V Server 20124 TB2.3 Windows 7:VersionLimit on X86Limit on X64Windows 7 Ultimate4 GB192 GBWindows 7 Enterprise4 GB192 GBWindows 7 Professional4 GB192 GBWindows 7 Home Premium4 GB16 GBWindows 7 Home Basic4 GB8 GBWindows 7 Starter2 GBN/A2.4 Windows Server 2008 R2VersionLimit on X64Limit on IA64Windows Server 2008 R2 Datacenter2 TB Windows Server 2008 R2 Enterprise2 TB Windows Server 2008 R2 for Itanium-Based Systems 2 TBWindows Server 2008 R2 Foundation8 GB Windows Server 2008 R2 Standard32 GB Windows HPC Server 2008 R2128 GB Windows Web Server 2008 R232 GB 2.5 Windows Server 2008VersionLimit on X86Limit on X64Limit on IA64Windows Server 2008 Datacenter64 GB1 TB Windows Server 2008 Enterprise64 GB1 TB Windows Server 2008 HPC Edition 128 GB Windows Server 2008 Standard4 GB32 GB Windows Server 2008 for Itanium-Based Systems 2 TBWindows Small Business Server 20084 GB32 GB Windows Web Server 20084 GB32 GB 2.6 Windows VistaVersionLimit on X86Limit on X64Windows Vista Ultimate4 GB128 GBWindows Vista Enterprise4 GB128 GBWindows Vista Business4 GB128 GBWindows Vista Home Premium4 GB16 GBWindows Vista Home Basic4 GB8 GBWindows Vista Starter1 GB 2.7 Windows Home ServerWindows Home Server 只有32位版本，最大物理内存4G2.8 Windows Server 2003 R2
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