On average, CHD compression can shrink a PS2 library by 40% to 60% . A 4GB ISO often compresses down to 2.2GB without losing a single frame of FMV or audio quality.
The most reliable repositories for complete, pre-converted CHD sets are hosted on the . These are often split by region or alphabetically to manage the massive file sizes of the PS2 library. ps2 chd roms full