Microsoft Windows Vista, Ultimate Edition with Service Pack 1 (32-bit and 64-bit DVD) (PC)

Manufacturer's Description The Windows Vista SP1 is an update to Windows Vista that addresses feedback from our customers. In addition to previously released updates, SP1 will contain changes focused on addressing specific reliability and performance issues, supporting new types of hardware, and adding support for several emerging standards. SP1 also addresses some management, deployment, and support challenges. This version of Windows Vista, Ultimate Edition with Service Pack 1 (PC) comes with both 32bit and 64 bit discs. 32-bit CD If your system features a CD drive but no DVD drive, you can order Windows Vista on CD-ROM. The installation files span multiple discs, so unattended installations are not possible. 64-bit DVD If your system features a 64-bit processor, you can take advantage of its advanced design by ordering 64-bit software media. You'll get the same interface, features, and functions, but you'll get them in an operating system that takes advantage of access to vastly more memory. All installation files are on a single disc. Please note that 64-bit media is included in the box with the purchase of Windows Vista Ultimate. The 64-bit version of Windows Vista is not for everyone. Please confirm that your system, applications, and devices are compatible with a 64-bit edition of Windows Vista before installing.