highly compressed ISOs for the Xbox 360 is the best way to save storage and bandwidth, especially if you’re building a massive library for your RGH/JTAG console or emulator.
For PC players, the can often run these files. However, Xenia usually prefers the ISO or XEX format. Using compressed archives saves space on your PC until you're ready to play. A Word of Caution: Safety First xbox 360 games iso highly compressed