Hardware requirements
Minimum/recommended system requirements (for x86 processors)
9x Kernel-based
|
CPU
|
RAM
|
Free disk space
|
Video adapter and monitor
|
Drives
|
Devices
|
Windows 95
|
386
|
4 MB
|
120 MB
|
|
|
|
Windows 98
|
486 DX2 66 MHz
|
16 MB
|
300 MB
|
|
|
|
Windows Me (Millennium Edition)
|
Pentium 150 MHz
|
32 MB
|
400 MB
|
|
|
|
NT Kernel-based
|
CPU
|
RAM
|
Free disk space
|
Video adapter and monitor
|
Drives
|
Devices
|
Windows NT Workstation 3.51
|
386, 25 MHz
|
8 MB
|
90 MB
|
|
|
|
Windows NT 4.0 Workstation
|
486, 33 MHz
|
12 MB
|
110 MB
|
|
|
|
Windows 2000 Professional
|
Pentium, 133 MHz
|
32 MB
|
650 MB
|
VGA (640 x 480) or higher resolution
|
CD-ROM
|
Keyboard and mouse
|
Windows XP
|
Pentium MMX, 233 MHz
|
64 MB
|
1.5 GB
|
Super VGA (800 x 600) or higher resolution
|
CD-ROM or DVD-ROM
|
Keyboard and mouse
|
Windows Fundamentals for Legacy PCs
|
Pentium, 233 MHz
|
64 MB
|
500 MB
|
|
|
|
Windows Vista
|
Pentium III, 800 MHz
|
512 MB/1 GB or higher recommended
|
15 GB (may be installed with as few as 7GB)
|
Super VGA (800 x 600) or higher resolution
|
DVD-ROM
|
|
Windows Server 2008
|
1 GHz (x86) or 1.4 GHz (x64)
|
512 MB RAM (may limit performance and some features)
|
10 GB
|
Super VGA (800 x 600) or higher resolution
|
DVD-ROM
|
Keyboard and mouse
|
Windows 7
|
1 GHz (x86/64)
|
1 GB or higher recommended (2 GB or Higher for x64)
|
16 GB (installs in 7 GB)
|
128MB (Aero)
|
DVD-ROM
|
Keyboard and mouse or touchscreen
|
Physical memory limits
Maximum limits on physical memory (RAM) that Windows can address vary depending on the both the Windows version and between 32-bit (x86-32) and 64-bit (x86-64) versions.[6][7]
9x Kernel-based
Version
|
Limit in 32-bit Windows
|
Limit in 64-bit Windows
|
Windows 95
|
1 GB
|
N/A
|
Windows 98
|
1 GB
|
N/A
|
Windows Me
|
1.5 GB
|
N/A
|
NT Kernel-based
Version
|
Limit in 32-bit Windows
|
Limit in 64-bit Windows
|
Windows NT 4.0
|
4 GB
|
N/A
|
Windows XP Starter Edition
|
512 MB
|
N/A
|
Windows XP Home
|
4 GB
|
N/A
|
Windows XP Professional
|
4 GB
|
128 GB
|
Windows 2000 Professional
|
4 GB
|
N/A
|
Windows 2000 Server
|
4 GB
|
N/A
|
Windows 2000 Advanced Server
|
8 GB
|
64 GB
|
Windows 2000 Datacenter Server
|
32 GB
|
64 GB
|
Windows Server 2003 Small Business Edition
|
4 GB
|
128 GB
|
Windows Server 2003 Standard SP1
|
4 GB
|
32 GB
|
Windows Server 2003 Standard R2
|
4 GB
|
32 GB
|
Windows Server 2003 Enterprise SP2
|
64 GB
|
1 TB
|
Windows Server 2003 Enterprise R2
|
64 GB
|
1 TB
|
Windows Server 2003 Datacenter SP2
|
128 GB
|
1 TB
|
Windows Server 2003 Datacenter R2
|
128 GB
|
1 TB
|
Windows Vista Starter
|
1 GB
|
N/A
|
Windows Vista Home Basic
|
4 GB
|
8 GB
|
Windows Vista Home Premium
|
4 GB
|
16 GB
|
Windows Vista Enterprise
|
4 GB
|
128 GB
|
Windows Vista Ultimate
|
4 GB
|
128 GB
|
Windows 7 Starter
|
2 GB
|
N/A
|
Windows 7 Home Basic
|
4 GB
|
8 GB
|
Windows 7 Home Premium
|
4 GB
|
16 GB
|
Windows 7 Professional
|
4 GB
|
192 GB
|
Windows 7 Enterprise
|
4 GB
|
192 GB
|
Windows 7 Ultimate
|
4 GB
|
192 GB
|
Windows Server 2008 Web Server
|
4 GB
|
32 GB
|
Windows Server 2008 Web Server R2
|
N/A
|
32 GB
|
Windows Server 2008 Standard
|
4 GB
|
32 GB
|
Windows Server 2008 Standard R2
|
N/A
|
32 GB
|
Windows Server 2008 Enterprise
|
64 GB
|
2 TB
|
Windows Server 2008 Enterprise R2
|
N/A
|
2 TB
|
Windows Server 2008 Datacenter
|
64 GB
|
2 TB
|
Windows Server 2008 Datacenter R2
|
N/A
|
2 TB
|
Windows Server 2012
|
N/A
|
4 TB
|
Security features
NT Kernel-based
|
Resource access control
|
Subsystem isolation mechanisms
|
Integrated firewall
|
Encrypted file systems
|
Windows 2000
|
ACLs
|
|
TCP/IP Filtering, IPSec
|
Yes (NTFS Only)
|
Windows XP
|
ACLs
|
Win32 WindowStation, Desktop, Job objects
|
Windows Firewall (From SP2), TCP/IP Filtering, IPSec
|
Yes (NTFS Only)
|
Windows Server 2003
|
ACLs, Privileges, RBAC
|
Win32 WindowStation, Desktop, Job objects
|
Windows Firewall, TCP/IP Filtering, IPSec
|
Yes
|
Windows Vista
|
ACLs, Privileges, RBAC
|
Win32 WindowStation, Desktop, Job objects
|
Windows Firewall, TCP/IP Filtering, IPSec
|
Yes
|
Windows Server 2008
|
ACLs, Privileges, RBAC
|
Win32 WindowStation, Desktop, Job objects
|
Windows Firewall, TCP/IP Filtering, IPSec
|
Yes
|
Windows 7
|
ACLs, Privileges, RBAC
|
Win32 WindowStation, Desktop, Job objects
|
Windows Firewall, TCP/IP Filtering, IPSec
|
Yes
|
Features
Version
|
Shell
|
Theme
|
Internet Explorer
|
Web server
|
Windows Media Player
|
Command-line interpreter
|
Windows 1.0
|
MS-DOS executive
|
|
No
|
|
|
|
Windows 2.0
|
MS-DOS executive
|
|
No
|
|
|
|
Windows 3.0
|
Program Manager
|
|
No
|
|
|
|
Windows 3.1x
|
Program Manager
|
|
No
|
|
|
|
Windows 95
|
Windows Explorer
|
|
2.0 in OSR1, 3.0 in OSR2 and OSR2.1, 4.0 in OSR2.5
|
|
|
COMMAND.COM
|
Windows NT 4.0
|
Windows Explorer
|
|
2.0
|
|
|
COMMAND.COM, cmd.exe
|
Windows 98
|
Windows Explorer
|
|
4.01
|
PWS
|
|
COMMAND.COM
|
Windows 98 SE
|
Windows Explorer
|
|
5.0
|
PWS
|
6.0
|
COMMAND.COM
|
Windows 2000
|
Windows Explorer
|
|
5.01
|
IIS 5.0
|
6.4
|
COMMAND.COM, cmd.exe
|
Windows Me
|
Windows Explorer
|
|
5.5
|
|
7.0
|
COMMAND.COM
|
Windows XP
|
Windows Explorer
|
Luna (Blue standard)
|
6.0
|
IIS 5.1
|
8 (9 in SP2)
|
COMMAND.COM, cmd.exe,
Windows PowerShell (optional)
|
Windows Server 2003
|
Windows Explorer
|
Classic (Luna can be enabled with Theme Service)
|
6.0
|
IIS 6.0
|
9 (10 in SP1)
|
COMMAND.COM, cmd.exe,
Windows PowerShell (optional)
|
Windows Vista
|
Windows Explorer
|
Aero
|
7.0
|
IIS 7
|
11
|
COMMAND.COM, cmd.exe,
Windows PowerShell (optional)
|
Windows Server 2008
|
Windows Explorer
|
Classic (Aero can be enabled by installing "Desktop Experience")
|
7.0
|
IIS 7
|
11 (enabled by installing "Desktop Experience")
|
COMMAND.COM, cmd.exe,
Windows PowerShell (optional)
|
Windows 7
|
Windows Explorer
|
Aero
|
8.0
|
IIS 7.5
|
12
|
COMMAND.COM, cmd.exe,
Windows PowerShell V2
|
Windows Server 2008 R2
|
Windows Explorer
|
Classic (Aero can be enabled by installing "Desktop Experience")
|
8.0
|
IIS 7.5
|
12 (enabled by installing "Desktop Experience")
|
COMMAND.COM, cmd.exe,
Windows PowerShell V2
|
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