Windows 9x/ME/2000/XP/Vista/7/8/8.1/10/11 System Requirements

Windows system requirements define the minimum and sometimes recommended hardware required to install and run Windows. The primary Windows system requirements are for processor, memory, and hard disk. This page lists the Windows 9x/ME/2000/XP/Vista/7/8/8.1/10 system requirements for processor, memory, and hard disk.

1.1.  Abbreviations

• 9x = Windows 95 and Windows 98 Second Edition.
• 98 = Windows 98 = Windows 98 Second Edition.
• ME = Windows ME = Windows Millennium Edition.
• 2000 = 2000 Pro = Windows 2000 Pro = Windows 2000 Professional.
• Vista HB = Windows Vista Home Basic.
• Vista HP, Bus, Ent, Ult = Windows Vista Home Premium, Business, Enterprise, Ultimate, respectively.

2.1.  Windows 9x/ME/2000/XP System Requirements

Windows 9x/ME/2000/XP System Requirements
Windows (Build)	95	98	ME	2000 Pro (NT 5.0)	XP (NT 5.1)
General Availability	15 Aug 1995	30 Jun 1998	31 Dec 2000	31 Mar 2000	31 Dec 2001
Processor (recommended)	386DX (486)	486DX 66MHz	150MHz	133MHz	233MHz (300MHz)
Memory (recommended)	4MB (8MB)	16MB (24MB)	32MB	32MB (64MB)	64MB (128MB)
Hard Disk	27-84MB free	120-355MB free	320MB free	2GB with 650MB free	1.5GB free

2.2.  Windows Vista/7 System Requirements

Windows Vista/7 System Requirements
Windows (Build)	Vista HB (NT 6.0)	Vista HP, Bus, Ent, Ult (NT 6.0)	7 (NT 6.1)
General Availability	30 Jan 2007	30 Jan 2007	22 Oct 2009
Processor	800MHz (32/64-bit)	1GHz (32/64-bit)
Memory	512MB (32/64-bit)	1GB (32/64-bit)	1GB (32-bit)/2GB (64-bit)
Hard Disk	20GB with 15GB free (32/64-bit)	40GB with 15GB free (32/64-bit)	16GB free (32-bit)/20GB free (64-bit)

2.3.  Windows 8/8.1 System Requirements

Windows 8/8.1 System Requirements
Windows (Build)	8 (NT 6.2)	8.1 (NT 6.3)
General Availability	26 Oct 2012	17 Oct 2013
Processor	1GHz with support for PAE, NX, and SSE2 (32/64-bit)
Memory	1GB (32-bit)/2GB (64-bit)
Hard Disk	16GB free (32-bit)/20GB free (64-bit)

2.4.  Windows 10 System Requirements

Windows 10 System Requirements
Windows (Build)	10 Version 1507 (10.0.10240)	10 Version 1511 (10.0.10586.0)	10 Version 1607 (10.0.14393.0)	10 Version 1703 (10.0.15063.0)	10 Version 1709 (10.0.16299.15)
General Availability	29 Jul 2015	12 Nov 2015	02 Aug 2016	11 Apr 2017	17 Oct 2017
Processor	1GHz (32/64-bit)
Memory	1GB (32-bit)/2GB (64-bit)
Hard Disk	16GB free (32-bit)/20GB free (64-bit)

Windows 10 System Requirements
Windows (Build)	10 Version 1803 (10.0.17134.1)	10 Version 1809 (1) (10.0.17763.1)	10 Version 1809 (2) (10.0.17763.107)	10 Version 1903 (10.0.18362.30)	10 Version 1909 (10.0.18363.418)
General Availability	30 Apr 2018	02 Oct 2018	13 Nov 2018	21 May 2019	12 Nov 2019
Processor	1GHz (32/64-bit)
Memory	1GB (32-bit)/2GB (64-bit)
Hard Disk	16GB free (32-bit)/20GB free (64-bit)			16GB free for upgrade installation (32/64-bit). 32GB free for clean/new installation (32/64-bit).
(1)(2)  There was two official releases of Windows 10 Version 1809; 1.) Build 10.0.17763.1 released 02 Oct 2018, and 2.) Build 10.0.17763.107 released 13 Nov 2018. For additional information, see Updated Version Of Windows 10 October 2018 Update Released To Windows Insiders (blogs.windows.com) and Resuming The Rollout Of The Windows 10 October 2018 Update (blogs.windows.com).

Windows 10 System Requirements
Windows (Build)	10 Version 2004 (10.0.19041.264)	10 Version 20H2 (10.0.19042.508)	10 Version 21H1 (10.0.19043.928)	10 Version 21H2 (10.0.19044.1288)	10 Version 22H2 (10.0.19045.2006)
General Availability	27 May 2020	20 Oct 2020	18 May 2021	16 Nov 2021	18 Oct 2022
Processor	1GHz (32/64-bit)
Memory	1GB (32-bit)/2GB (64-bit)
Hard Disk	16GB free for upgrade installation (32/64-bit). 32GB free for clean/new installation (32/64-bit).

2.5.  Windows 11 System Requirements

Windows 11 System Requirements
Windows (Build)	11 Version 21H2 (10.0.22000.194)	11 Version 22H2 (10.0.22621.521) (1)	11 Version 23H2 (10.0.22631.2428)	11 Version 24H2 (10.0.26100.1742)	11 Version 25H2 (10.0.26200.6584)
General Availability	04 Oct 2021	20 Sep 2022 (2)	31 Oct 2023	01 Oct 2024	30 Sep 2025
Processor	Intel: 8th Generation Intel Core, Pentium, or Celeron. For specifics, see Windows 11 Supported Intel Processors (docs.microsoft.com). AMD: AMD Ryzen 3000. For specifics, see Windows 11 Supported AMD Processors (docs.microsoft.com).
Memory	4GB
Hard Disk	64GB
Miscellaneous	Motherboard Firmware: Unified Extensible Firmware Interface (UEFI) and Secure Boot capable. Trusted Platform Module (TPM): TPM 2.0.
(1)(2)  Windows 11 Version 22H2 general availability was announced on 20 Sep 2022 when Windows 11 Version 22H2 was at build 10.0.22621.521. However, apparently the first build of Windows 11 Version 22H2 released through official channels as a general availability ISO was 10.0.22621.525 on 28 Sep 2022, not 10.0.22621.521 on 20 Sep 2022.

• Windows 95 Installation Requirements (138349) (support.microsoft.com)
• Minimum Hardware Requirements For A Windows 98 Installation (182751) (support.microsoft.com)
• Minimum Hardware Requirements To Install Windows Millennium (253695) (support.microsoft.com)
• System Requirements For Microsoft Windows 2000 Operating Systems (304297) (support.microsoft.com)
• System Requirements For Windows XP Operating Systems (314865) (support.microsoft.com)
• Windows Vista System Requirements (windows.microsoft.com)
• System Requirements For Windows Vista (919183) (support.microsoft.com)
• Windows 7 System Requirements (windows.microsoft.com)
• System Requirements: Windows 8.1/Windows 8 (windows.microsoft.com)
• How To Find Windows 10 Computer Specifications & Systems Requirements (microsoft.com)
• Minimum Hardware Requirements (docs.microsoft.com) (Windows 10.)
• Updated Version Of Windows 10 October 2018 Update Released To Windows Insiders (blogs.windows.com)
• Resuming The Rollout Of The Windows 10 October 2018 Update (blogs.windows.com)
• What's New In Windows 10, Version 1903 IT Pro Content (docs.microsoft.com)
• Find Windows 11 Specs, Features, And Computer Requirements (microsoft.com)
• Windows 11 System Requirements (support.microsoft.com)
• Windows 11 Requirements (learn.microsoft.com)
• Find Windows 11 Specs, Features, And Computer Requirements (microsoft.com)
• Windows 11 Supported Intel Processors (docs.microsoft.com)
• Windows 11 Supported AMD Processors (docs.microsoft.com)
• Windows 11 And Secure Boot (support.microsoft.com)
• What Is A TPM, And Why Do I Need One For Windows 11? (pcmag.com)
• Windows 11 Demands TPM 2.0 And Here's What That Means For You (pcgamer.com)
• Trusted Platform Module Technology Overview (learn.microsoft.com) (TPM.)
• Enable TPM 2.0 On Your PC (support.microsoft.com)
• Windows Processor Requirements (docs.microsoft.com)