Unlike converting a video to a lower resolution, converting an ISO to a CHD is lossless. Every bit of data, from the game code to the music tracks, remains identical to the original. You won't experience downgraded FMVs or missing audio. 3. Better Performance on Modern Emulators
: Unlike other formats that might strip audio or video, CHD is 100% lossless; the data is exactly the same as the original rip when decompressed. ps2 chd roms