ISO files generally load faster and suffer less from file fragmentation.
A standard PlayStation 3 Blu-ray disc can hold anywhere from 5 GB to over 40 GB of data. For archivers and enthusiasts, transferring these massive files over the internet or storing them on external hard drives can be incredibly inefficient. How High Compression Works ps3 iso games highly compressed link
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Finding highly compressed PS3 ISO games is a top priority for gamers with limited storage or slow internet. PlayStation 3 games are notoriously massive, often ranging from 10GB to over 40GB.
A PlayStation 3 running or PS3HEN (Homebrew Enabler) .