Do not use your browser's default "Save As" for such a large file (though 650MB is small by today's standards, corruption happens). Use a download manager or the provided by Archive.org. Torrents ensure the file integrity via checksum during download.
Modern users typically seek these ISOs for three primary reasons: windows xp sp3 iso archive org
Archive.org serves as a massive repository for "abandonware," hosting various versions of the Windows XP SP3 ISO, from Retail and OEM editions to niche community-made builds. Do not use your browser's default "Save As"
The Windows XP Service Pack 3 (SP3) ISO, hosted on Internet Archive hosted on Internet Archive