Released April 2005 | KB: 5.2.3790 | Based on Windows Server 2003 SP1 codebase
Unlike standard XP (which had SP3), XP x64 only ever received Service Pack 2 (which was functionally similar to Server 2003 SP2). This is the version you want. It includes:
Before mounting the ISO, run it through a hash checker. For example, the original MSDN English ISO for XP x64 SP2 has a known SHA-1 value you can cross-reference with online databases. windows xp professional x64 edition archive.org
Assuming you have found a legitimate, non-abandonware-tagged file on Archive.org (Microsoft has historically allowed archival for research and abandonware purposes, though check local laws), here is the safe process:
Because driver support is poor for modern hardware, the best way to experience XP x64 is via a Virtual Machine (VM). Released April 2005 | KB: 5
Recommended Software:
Installation Steps:
Mount the ISO:
Boot and Install:
Product Keys: