If you are building a dedicated retro PC specifically to play older games from the 2005-2012 era and you are not connecting the PC to the internet, Windows 7 Razer Edition can be a fun, nostalgic, and visually cohesive way to experience that era.
It is almost exclusively distributed as a 64-bit (x64) image to support modern gaming hardware and more than 4GB of RAM. Critical Security and Legal Risks windows 7 razer edition 64 bit iso
The Legend of Windows 7 Razer Edition 64-Bit ISO: Myth, Mod, and Modern Security Risks If you are building a dedicated retro PC