This is part of the MAME tools distribution.
. Redump is a group that provides "hashes" (unique digital fingerprints) for games to confirm they are 1:1 copies of the original retail discs. Verified Sets ps2 chd roms verified
PS2 ISOs are often filled with "padding" (empty data used to fill the physical disc). CHD compression removes this padding, often reducing a 4.3GB ISO to under 2GB. This is part of the MAME tools distribution
| Format | Compression | Load Time (PCSX2) | Verification | Streaming Audio | | :--- | :--- | :--- | :--- | :--- | | | 0% | 1x (Baseline) | Easy | Perfect | | CSO (CISO) | ~30% | 1.4x (Slower) | Unreliable | Sometimes glitchy | | CHD (Unverified) | ~55% | 0.9x (Faster) | No | Risky | | CHD (Verified) | ~55% | 0.9x (Faster) | Yes | Perfect | Verified Sets PS2 ISOs are often filled with
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