Windows Server 2003 SP1 x64

https://web.archive.org/web/2019051314…r--desktop.html

Zitat

In addition to security improvements, Service Pack 1 also is the foundation for the x64 editions of the operating system and for Windows Server Update, codenamed R2, which will ship in the second half of 2005.

das SP1 wurde nie für x64 veröffentlicht, da dort schon integriert.