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All 32-bit editions of Windows Vista, excluding Starter, support up to 4 GB of RAM. The 64-bit edition of Home Basic supports 8 GB of RAM, Home Premium supports 16 GB, and Business, Enterprise, and Ultimate support 128 GB of RAM. [19] All 64-bit versions of Microsoft operating systems impose a 16 TB limit on address space.
Windows Vista Enterprise; Windows Vista Ultimate; 6002 [c] IA-32, x86-64: April 11, 2017 Windows 7: Windows 7 [4] October 22, 2009 NT 6.1 Windows 7 Starter; Windows 7 Home Basic; Windows 7 Home Premium; Windows 7 Professional; Windows 7 Enterprise; Windows 7 Ultimate; 7601 [d] IA-32, x86-64: January 14, 2020 Windows 8: Windows 8: October 26 ...
The 64-bit variant runs on CPUs compatible with the 8th generation of x86 (known as x86-64, or x64) or newer, and can run 32-bit and 64-bit programs. 32-bit programs and operating system are restricted to supporting only 4 gigabytes of memory, while 64-bit systems can theoretically support 2048 gigabytes of memory.
The 64-bit versions of Vista require that all new Kernel-Mode device drivers be digitally signed, so that the creator of the driver can be identified. [77] [78] This is also on par with one of the primary goals of Vista to move code out of kernel-mode into user-mode drivers, with another example bing the new Windows Display Driver Model. [79]
Windows Server 2016: 1.4 GHz 64-bit processor 512 MB ECC memory 2 GB with Desktop Experience installed [26] depends on role 32 GB (~10 GB for OS) XGA (1024 x 768) Windows Server 2019: 1.4 GHz 64-bit processor 512 MB ECC memory 2 GB with Desktop Experience installed [26] depends on role 32 GB XGA (1024 x 768) Windows Server 2022: 1.4 GHz 64-bit ...
As a result, the decision was made to postpone the introduction of UEFI support to Windows; support for UEFI on 64-bit platforms was postponed until Vista Service Pack 1 and Windows Server 2008 and 32-bit UEFI will not be supported, as Microsoft does not expect many such systems to be built as the market moves to 64-bit processors.
Windows 8 (also sometimes referred to as Windows 8 (Core) to distinguish from the OS itself) [2] is the basic edition of Windows for the IA-32 and x64 architectures. This edition contains features aimed at the home market segment and provides all of the basic new Windows 8 features.
In the RTM release of Windows Vista, files encrypted using the Encrypting File System (EFS) were not archived by the operating system's backup application; [106] this feature was reinstated in Service Pack 1. [107] Windows Vista Backup does not have all the features and command line parameters supported by NTBackup. [108]