In the context of the Internet Archive , "Extra Quality" usually refers to collections that use sources. Redump is a group that archives precise checksums for game discs to ensure they are perfect copies without corruption or modifications. The "Extra Quality" label typically highlights:
A PSP CHD can reduce the size of a standard ISO by 20% to 50%, depending on the game’s data structure. psp chd internet archive extra quality
alongside CHD. These sets typically use the latest compression algorithms (Zstandard) which offer the best balance between small file sizes and fast decompression speeds. PSP CHD ZSTD Redump Part 1 : High-quality, verified compressed dumps. PSP CHD ZSTD Redump Part 2 : Continued collection of verified titles. Pro-Tip: The "Extra Quality" Secret In the context of the Internet Archive ,
: Contains a vast alphabetical collection of verified PSP CHDs. PSP-CHD-ZSTD-Redump Part 2 alongside CHD