Windows Vista 32-bit and 64-bit (x86 and x64) Maximum Supported RAM Physical Memory Limit Windows Vista的32位和64位（ x86和x64 ） ，最高可支持RAM的物理内存限制

Windows Vista Windows Vista的 is by far the most resource hungry and memory usage extensive yet是迄今为止最资源饥饿和记忆体使用量广泛，但 operating system作业系统 available to date, as has been shown by the可迄今为止，已经表现出来的 high-end system specifications高完系统规格 that needed to run Windows Vista properly and efficiently, especially if you intends to enable all需要运行Windows Vista ，妥善和有效，尤其是如果你打算使所有 advanced Windows Vista features先进的Windows Vista功能 in a在一个 Windows Vista Premium Ready PC Windows Vista Premium Ready的PC机 . 。 One way to run Windows Vista faster is to add and install as many memory or RAM as possible to your desktop or laptop computer.其中一个方法运行Windows Vista更快的是添加并安装尽可能多的记忆体或RAM尽可能到您的桌面或笔记本电脑上。 However, don’t buy the memory chips as many as you can even your system can support it, or you have too many money to spare, as there is upper limits on physical memory and virtual memory address space that Windows Vista can support and recognize.不过，不买记忆体晶片多达您甚至可以在您的系统可以支持它，或您有太多的钱备件，有上限，对物理内存和虚拟内存地址空间， Windows Vista可以支持和承认。

Windows Vista supports up to 4GB RAM virtual memory address range for most editions of 32-bit Windows Vista with the exception of Windows Vista Starter edition, and up to 128GB of physical memory for most editions of 64-bit Windows Vista except Windows Vista Home Basic and Home Premium. Windows Vista的支持高达4 GB的RAM的虚拟内存地址范围为最版本的32位的Windows Vista与例外的Windows Vista精简版，和高达128gb的物理内存对大多数版本的64位Windows Vista中，除Windows Vista Home Basic升级和家庭的保费。 Windows Vista Starter edition is not available in 64-bit or x64 version. Windows Vista的简化版是不具备的64位或x64版本。

Windows Vista Limits on Maximum Physical and Virtual Memory Address Windows Vista的限制，最多的物理和虚拟内存地址

The maximum supported physical memory on Windows Vista is not to be confused with virtual memory addresses that a Windows Vista can use.所支持的最大物理内存在Windows Vista上是不容混淆的虚拟内存地址，在Windows Vista可以使用。 Although the Windows Vista 32-bit operating system platform releases can theoretically and technically can use and support more than 4GB of physical memory or RAM by using PAE (Physical Address Extension) to access the memory remapped by the mainboard or motherboard above the 4GB address boundary, however, the x86 version of Windows Vista does not by design support full use of 4GB physically installed RAM, as all 32bit editions of Vista are design on PAE-Kernal to limit to 4GB virtual memory address space, with Vista Starter limits to 1GB.虽然Windows Vista的32位元作业系统平台的发布，可以在理论上和技术上可以使用和支持4GB以上的物理内存或RAM用的PAE （物理地址扩展）来存取记忆体remapped由主板或主板以上4 GB的地址边界但是， x86版本的Windows Vista并没有设计支持，充分利用身体上安装了4 GB的RAM的，因为所有的32位版本的Vista的设计上的PAE -核心，以限制为4GB的虚拟内存地址空间，与Vista的起动限制至1GB 。

Since only a maximum of 4GB virtual memory address range is available in Windows Vista, which are sub-divided or allocated some memory address range to manage both the computer’s PCI memory address range (also known as MMIO) which used for system video graphics cards, BIOS, IO cards, networking, PCI hubs, bus bridges, PCI-Express, and RAM, so the amount of available RAM is always less than 4 GB.因为只有最多4 GB的虚拟内存地址范围是适用于Windows Vista ，这是细分或分配一些内存地址范围来管理电脑的PCI内存地址范围（也称为mmio ） ，其中用于系统视频图形卡的BIOS ， IO卡，网络的PCI枢纽，巴士桥梁， PCI - Express的，和RAM ，所以数额的可用RAM总是少于4 GB的。 BIOS takes up about 512 KB, with video or graphic accelerator card needs memory address for at least the amount of memory on the graphics card. BIOS的占用了约512 KB的，视频或图形加速器卡，需要的内存地址为最少的记忆体数量对图形卡。 Which mean if you have 256 MB VRAM graphic card, at least 256 MB already been used up from your 4 GB memory available to Windows Vista.这意味着如果你有256 MB的vram图形卡，至少有256 MB的已经被用来从您的4 GB的可用的记忆体到Windows Vista 。 The net result is that a high performance x86-based computer may allocate 512 MB to more than 1 GB for the PCI memory address range before any RAM (physical user memory) addresses are allocated.净结果是一种高性能，基于x86的计算机可能会拨出512 MB到多于1 GB为PCI内存地址范围之前，任何RAM （物理用户记忆体）的地址分配。 So the typical available RAM for the OS will be reduced to between 3 GB and 3.4 GB.因此，典型的可用RAM为操作系统将减少到3 GB和3.4 GB的。

So if you want to fully utilize your physical memory of 4 GB or more in Windows Vista, the only way is to install 64-bit Windows Vista operating system which uses 64-bit addressing enabling virtually the entire amount of installed RAM to be made available on computers that have large address infrastructures (where the entire system has more than 4 GB addressing capabilities via the processor, chipset, physical memory capacity, etc), by moving the virtual memory address range needed by the system PCI, I/O and RAM out of the 4GB address space.所以，如果你想充分利用您的物理内存， 4 GB或更多在Windows Vista中，唯一的方法就是安装64位的Windows Vista操作系统，使用64位处理，使几乎整个金额安装的RAM取得电脑上有大量地址的基础设施（如整个系统有4 GB以上处理的能力，通过处理器，芯片组，物理内存容量等） ，移动虚拟内存地址范围所需要的系统的PCI ， I / O和内存出于对4 GB的地址空间。

Note that also on 32-bit editions of Windows, applications have 4 gigabyte (GB) of virtual address space available.请注意，还对32位版本的Windows ，应用程序有4吉字节（ GB ）的虚拟地址空间可用。 The virtual address space is divided so that 2-GB is available to the application and the other 2-GB is available only to the system.虚拟地址空间划分，使2 GB的可用的应用和其他2 GB的是只适用于该系统。 So if your Vista system unable to use more than 2GB of memory even though 4GB has been installed, try to use因此，如果您的Vista系统无法使用超过2 GB的内存，即使4 GB的已安装，尝试使用 4GT RAM Tuning 4gt RAM调优 feature increases the memory that is available to the application up to 3-GB, and reduces the amount available to the system to between 1 and 2-GB, by adding the /3GB switch to the Boot.ini file.功能增加了内存是提供给应用最多3 GB的，并减少金额提供给系统之间的1和2 GB的，加入/ 3GB开关到Boot.ini文件。

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