Is XP SP3 an equivalent of Windows Vista/Vista SP1?
No, Windows XP SP3 is not equivalent to Windows Vista or Vista SP1. Although Windows XP and Windows Vista were released consecutively, they have significant differences in design, functionality, and system requirements. Windows XP SP3 was the final major update for Windows XP, adding some performance improvements and security fixes, but it still lacks the advanced graphics, updated user interface, and enhanced security features introduced in Windows Vista.
For an overview of Windows OS versions and their costs in 2024, https://kms-full.com/blog/What-are-the-Cost-of-Windows-OS-in-2024.html provides a useful breakdown, helping you compare the latest Windows options if you’re considering an upgrade from XP or Vista.