For years, the standard for PSX emulation was the format, which provided a literal track-by-track copy of the original disc. While accurate, these files are often bulky and cumbersome to manage. The rise of CHD (Compressed Hunks of Data) has revolutionized this space. Originally developed for the MAME project, CHD is a lossless compression format that can reduce file sizes by up to 40% without sacrificing a single bit of game data.
Finding high-quality, pre-compressed files is key. Here are the most reputable, community-vetted sources: Archive.org Psx Highly Compressed Roms