(Compressed Hunks of Data) has recently overtaken PBP in popularity for PC-based emulators because CHD offers slightly better compression and better metadata support. However, for handheld gaming
The PBP file feeds the game data from the flash storage to the POPS emulator much faster than a physical disc laser could ever read it. This is why PSX games on PSP often have shorter loading times than they did on the original console. pbp psx roms work