For PSP specifically, use the -c 1 parameter (LZMA compression) rather than default -c 0 (Huffman). LZMA is slower to compress but yields 10-15% smaller files. chdman createcd -c 1 -i game.iso -o game.chd
is considered "better" primarily because they offer superior lossless compression compared to traditional ISO or CSO formats psp chd internet archive better
Analysis of the query "psp chd internet archive better" regarding PlayStation Portable (PSP) emulation preservation and formats. For PSP specifically, use the -c 1 parameter
: CHD offers a compression ratio typically 35% to 50% better than raw ISOs . For PSP specifically
CHD wins in every category except conversion time (takes longer to make than CSO).