CHD gives slightly less compression than 7z Ultra but is directly usable.
without sacrificing emulation quality. These formats work by using streaming decompression, allowing the emulator to read only the necessary data on the fly rather than decompressing the entire file at startup. Core Mechanics of PCSX2 Compression Streaming Decompression pcsx2 games highly compressed work
It starts with a simple search. You want to play God of War II , a masterpiece that clocks in at roughly 6.2 GB. Maybe you want Grand Theft Auto: San Andreas , another 4 GB chunk of data. If you are building a library of the top 50 PS2 games, you are suddenly looking at 200+ gigabytes of ISO files. CHD gives slightly less compression than 7z Ultra