Used for PSP/PSVita compatibility. It offers good compression but is not ideal for PC emulators like DuckStation, which prefer CHD for performance.
With CHD, multi-disc games (like Final Fantasy VII or Metal Gear Solid ) can be managed more efficiently by front-ends, reducing the hassle of swapping discs. CHD vs. BIN/CUE vs. PBP: Comparison
Originally developed for arcade emulators like MAME, CHD has gone mainstream. If you haven’t converted your PlayStation library to CHD yet, you are wasting storage space and cluttering your hard drive. Here is why the "exclusive" shift to CHD is the best update to your retro collection since the invention of the rewind feature.
: Massive compression gains on multi-disc games.
Because of this perfect accuracy and high compression ratio, developers adapted the CHD format for CD-based home consoles, specifically the Sony PlayStation 1. The Big Problem with Traditional PSX ROMs
For PSX specifically, CHD solves the problem of . The Redump project ensures 1:1 copies of original discs. CHD preserves these hashes perfectly.
Unlike .PBP (PSP EBOOT format), which can sometimes suffer from audio issues or require re-sampling, . What you hear and see is exactly what was on the original disc. Where to Find Exclusive CHD PSX ROM Sets