The Xbox 360 Arcade pack just got a bit more useful. The mysterious 512MB Arcade unit seen yesterday is real! Microsoft confirmed to Eurogamer that it has doubled the memory on the "Jasper" motherboard of the hard-drive-free system. However, of course, not all of that space will be available to the owner: "The Xbox 360 system software uses some of the included 512MB memory;" Microsoft's statement reads. "Less storage will be available to users."

The on-board storage was originally introduced to house the New Xbox Experience upgrade. According to Microsoft, this extra storage doesn't portend any new functionality: "We want to offer consumers a bit more memory at the same low price so they can enjoy more experiences on Xbox LIVE."

This article was originally published on Joystiq.