Buy.com Operating Systems

Sort by: Products per page:
  • "Needed" says EJB & GB

Our highest rated review:

Rating: 4 out of 5 stars Review summary of Microsoft Windows XP Professional with Service Pack 2

alaTest has collected and analysed 283 reviews of Microsoft Windows XP - Professional Upgrade from international magazines and websites.

Our lowest rated review:

Rating: 4 out of 5 stars Review summary of Microsoft Windows XP Professional with Service Pack 2

For those uncertain whether or not to take the plunge, we suggest evaluating RC2 along side XP 32-bit (via dual booting), to make sure that all your hardware and software is working properly. Unfortunately, as older 6-bit code does not run properly at thi

  • "to bring old computer up to date" says yelims
  • "Needed it to upgrade a computer." says tbebad
  • "need it" says badger2009

Our highest rated review:

Rating: 5 out of 5 stars Review summary of Microsoft Windows XP Home Edition with SP2 (OEM)

Packed full of many new features, this latest Microsoft OS will amaze and delight.

Our lowest rated review:

Rating: 4 out of 5 stars Review summary of Microsoft Windows XP Home Edition with SP2 (OEM)

  • "Something I needed - bought a laptop, needed to reinstall operating system - wanted legal software" says pmarcil
  • "I have a dile failure and I couldn't find my orignal disk" says Pete II
  • "I needed the software to run another software program that is not yet compatible with Windows Vista, because Microsoft sucks!" says Gsumer
  • "To upgrade" says chinmn
  • "I lost the original" says JusJane
  • "price" says nellyis

Our highest rated review:

Rating: 5 out of 5 stars Review summary of Microsoft Windows Server 2003 - 5 CALs

86-based hardware. The 64-bit version of the OS (for Intel Itanium-based systems) supports up to 64GB of RAM, and the Datacenter Edition of the OS supports a whopping 32 processors and 512GB of RAM.

Our lowest rated review:

Rating: 4 out of 5 stars Review summary of Microsoft Windows Server 2003 - 5 CALs

Microsoft Office Standard 2007 is a worthy upgrade if you need to make sleeker-looking documents and presentations to share with others, and Outlook is better than ever. However, you can stick to your current software if you don't feel that it lacks anyth

  • "I need it for my business www.modcom.net" says Computer stud
  • "Purchase for my customer" says haha137
  • "We need to upgrade our computer system to a real Server environment." says Scarlet13

Our highest rated review:

Rating: 5 out of 5 stars Review summary of Microsoft Windows Vista Ultimate 64-Bit OEM For PC

alaTest has collected and analysed 956 reviews of Microsoft Windows Vista Ultimate from international magazines and websites.

Our lowest rated review:

Rating: 4 out of 5 stars Review summary of Microsoft Windows Vista Ultimate 64-Bit OEM For PC

Some more features...

  • "needed it" says rimacman
  • "needed the product to set up a dual-boot MacBook Pro" says Compelling StorySeller

Our highest rated review:

Rating: 5 out of 5 stars Review summary of Microsoft Windows XP Pro x64 Edition SP2C for System Builders - 1 pk

We would like to offer you a detailed preview of the Release candidate 1 of the new Windows XP Professional x64 Edition operating system. In this article we will compare the performance of the AMD and Intel processors in 32-bit and 64-bit applications.

Our lowest rated review:

Rating: 3 out of 5 stars Review summary of Microsoft Windows XP Pro x64 Edition SP2C for System Builders - 1 pk

Our highest rated review:

Rating: 4 out of 5 stars Review summary of Microsoft Windows XP Professional Upgrade with SP2

alaTest has collected and analysed 283 reviews of Microsoft Windows XP - Professional Upgrade from international magazines and websites.

Our lowest rated review:

Rating: 4 out of 5 stars Review summary of Microsoft Windows XP Professional Upgrade with SP2

For those uncertain whether or not to take the plunge, we suggest evaluating RC2 along side XP 32-bit (via dual booting), to make sure that all your hardware and software is working properly. Unfortunately, as older 6-bit code does not run properly at thi

  • "Win XP Professional is the standard for our office. This will upgrade a new PC to the proper operating system." says FrBlake
  • "better than vista and needed it for new build" says Leyte
  • "Needed to upgrade a client's computer from the Home edition to the Professional edition. This was the cheapest we could find that was also in stock." says Kiverly

Our highest rated review:

Rating: 5 out of 5 stars Review summary of Microsoft Windows XP Home Edition Upgrade with SP2

Packed full of many new features, this latest Microsoft OS will amaze and delight.

Our lowest rated review:

Rating: 4 out of 5 stars Review summary of Microsoft Windows XP Home Edition Upgrade with SP2

  • "to update a laptop" says any-one
  • "needed to upgrade from ME" says Lorli
  • "good operating system" says stryker
  • "For my laptop to upgrade to use in my business" says cindy-Allstate
  • "I needed an OS for my new computer system." says Jakob27

Our highest rated review:

Rating: 5 out of 5 stars Review summary of Microsoft Windows Vista Home Premium 64 Bit Add-On with SP1

alaTest has collected and analysed 972 reviews of Microsoft Windows Vista Home Premium from international magazines and websites.

Our lowest rated review:

Rating: 4 out of 5 stars Review summary of Microsoft Windows Vista Home Premium 64 Bit Add-On with SP1

  • "Because I had windows xp and i wanted to upgrade" says lui18
  • "just wanted to upgrade my pc" says kbiggie
  • "need upgrade" says Dll7656

Our highest rated review:

Rating: 5 out of 5 stars Review summary of Microsoft Windows Server 2008

alaTest has collected and analysed 6 reviews of Microsoft Windows Server 2008 from international magazines and websites.

Our lowest rated review:

Rating: 4 out of 5 stars Review summary of Microsoft Windows Server 2008

Finally, late in February, shipping versions of Microsoft Windows Server 2008 made it into users' hands. I checked out a copy of Server 2008 Enterprise installed on our current server Editors' Choice, the HP ProLiant DL380 G5, and found improvements from

1    2    3    4    5   
Shipping costs above are an estimate of UPS ground, or equivalent U.S. carrier, for ZIP code:

Best prices on Buy.com in Operating Systems. Check out BizRate for great deals on Operating Systems from Microsoft, HP and Cisco. Use BizRate's latest online shopping features to compare prices for Buy.com. Read product specifications, calculate tax and shipping charges, sort your results, and buy Computers & Software with confidence. Easily narrow your search and find the product that's perfect for you: Microsoft Windows 7 Home Premium Upgrade - Microsoft Windows XP Professional SP3 English for System Builders.

close window

close window