Here’s a breakdown of what that file label means, along with a short piece contextualizing the release.
God of War: Chains of Olympus: The specific title. Developed by Ready at Dawn, it follows Kratos during his ten years of service to the Gods of Olympus. Here’s a breakdown of what that file label
1 GB MS: The file is optimized (often through "ripping") to fit on a 1 GB Memory Stick, which was a common storage limitation for early PSP users. If the ripper used "Lossy Audio" (converting voices
Visual Masterpiece: Ready at Dawn pushed the PSP hardware to its absolute limit, delivering visuals and cinematic cutscenes that rivaled the PlayStation 2. God of War: Chains of Olympus : The specific title
At the time of release, Chains of Olympus forced Sony to unlock the PSP’s CPU clock speed from 222MHz to 333MHz just to handle the graphics.
(Compressed ISO), which is a common format used to save space on a PSP memory stick.