. Standard PS2 ISOs are often much larger, frequently around 4 GB, because they are sourced from single-layer DVDs. parklanejewelry.com * Compression Options for Emulation
Unlike .gz files, CHD doesn't require the emulator to create a separate "index" file before starting the game. tekken 4 ps2 iso highly compressed better
Most “10MB to 500MB” Tekken 4 ISOs you find online are: frequently around 4 GB