If you are using a high-end phone for PS2 emulation, CHD is essential for fitting more games onto an SD card. Summary of Benefits ISO Format CHD Format Size Large (Full disc size) Small (Compressed) Integrity 1:1 Copy (Lossless) Load Times Standard (Negligible CPU overhead) Compatibility Most modern emulators
Most users download the "MAME tools" package which includes chdman.exe .
CHD stands for Compressed Hunks of Data. Originally developed for the MAME project, this lossless compression format has become the gold standard for disc-based emulation.
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