Save as to-chd.bat in your game folder:
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 ps2 chd roms
If you are playing on an via a hard drive (using OPL) or burning discs, you cannot use CHD directly. The console’s hardware doesn't have the processing power to "decompress" the files on the fly. In these cases, CHD is strictly for emulation or long-term storage to save space on your PC. Save as to-chd
You don't need to find pre-made CHDs. You can convert your existing ISOs using a free tool called (part of the MAME tool suite). In these cases, CHD is strictly for emulation