Buy the ARP T-Shirt! BIOS Optimization Guide Money Savers!

 26 June 2009
 Dr. Adrian Wong
 Discuss here !
Desktop Graphics Card Comparison Guide Rev. 33.0
Covering 628 desktop graphics cards, this comprehensive comparison allows you ... Read here
BIOS Option Of The Week - Virtualization Technology
Since 1999, we have been developing the BIOS Optimization Guide, affectionately known... Read here
Buy The BOG Book Subscribe To The BOG! Latest Money Savers!
The Microsoft Windows 7 Free Upgrade Option Program Rev. 4.1
Digg! Reddit!Add to Reddit | Bookmark this article:

Windows 7 Upgrade Option Requirements

Microsoft currently lists the following as the minimum recommended hardware specifications for running Windows 7. Although this is still subject to change, it is unlikely to change much at this late stage.

  • 32-bit or 64-bit processor @ 1 GHz
  • 1 GB of system memory
  • 16 GB of available disk space
  • Support for DirectX 9 graphics with 128MB memory (to enable the Aero theme)
  • DVD-R/W drive
  • Internet access

Note : Some product features of Windows 7, such as the ability to watch and record live TV or navigation through the use of "touch," may require advanced or additional hardware.

Pre-installed Windows Vista Service Pack 1 or Windows Vista Service Pack 2 will be required for the Windows 7 Upgrade option. Windows XP that was installed as a downgrade from a Windows Vista license is also eligible under the program but it will not support a direct upgrade to Windows 7. A clean install is necessary.

In summary, the hardware and software requirements for the Windows 7 Upgrade Program are :

  • Running an eligible Microsoft Windows operating system (Windows Vista, Windows XP Downgrade)
  • Latest installed Service Pack and security patches (SP1/2 for Windows Vista, SP3 for Windows XP Downgrade).
  • Meet the hardware requirements mentioned above.
  • Clean install for Windows XP Downgrade Systems.


New! Storage Requirements

This is the current summary of the minimum free hard disk drive space required for an upgrade to Windows 7. Do note that this summary is based on a pre-RTM version of Windows 7 and is subject to change.


Space Required On x86

Space Required On AMD 64

Windows 7 Business Edition

12,838 MB

16,622 MB

Windows 7 Ultimate Edition

13,008 MB

16,623 MB

Windows Vista Home Premium
(for comparison)

12,831 MB

16,614 MB

  • A clean X86 install.wim is ~2.15 GB (pre-RTM size, subject to change), fits on a single DVD, and takes up ~8GB of HDD space when installed.
  • A clean AMD64 install.wim and files are ~30% larger.
  • The size increase of installing language packs to a WIM file is approximately equal to size.

No. Of Languages

Windows 7 OS (LP.CAB)

Windows 7 OS (Expanded Setup Files)

Windows PE (LP.CAB)


87.20 MB

2.18 MB

2.11 MB


65.72 MB

1.66 MB

1.79 MB


185.44 MB

5.5 MB

2.97 MB


3,139.30 MB

78.52 MB

76.03 MB


Support Tech ARP!

If you like our work, you can help support out work by visiting our sponsors, participate in the Tech ARP Forums, or even donate to our fund. Any help you can render is greatly appreciated!




Official Name
Overview Of The Windows 7 Upgrade Option Program


Important Program Dates
Marketing Guidance
Marketing Materials


Eligible Upgrade Paths


Possible Upgrade Options


Validation Of Program Compliance
Fulfillment Limitations
Installation Notices


Windows 7 Upgrade Option Screenshots


Windows 7 Upgrade Option Screenshots (Continued)


Windows 7 Upgrade Option Requirements
Storage Requirements


Windows 7 Upgrade Option Q&A Part 1


Windows 7 Upgrade Option Q&A Part 2


Windows 7 Upgrade Option Q&A Part 3


Impact Of E & N Versions Of Windows 7
Eligible Upgrade Paths In Europe
Inclusion Of A Web Browser


Clean Installation Requirement For E & N Versions


Media Delivery
Product Activation
Upgrade Media Bill Of Materials

The AMD Radeon R9 Nano Technology Report
Seagate 250 GB Momentus 5400.4 SATA Notebook Hard Drive Review Rev. 1.1
Western Digital 500 GB Caviar GP Hard Drive Review
My Thoughts On The Sony PlayStation 3
Empire23's Xmas 2006 Wish List
Corsair XMS2-8500 DDR2 Memory Pictorial Review
Secure Your Wireless Network
ASUS W5000A Notebook Overview
Micron Rev5B "C" Memory Module Review


Copyright © Tech All rights reserved.