When the Jasper motherboards started showing up in Xbox 360 consoles late last year there was reason for excitement -- quieter fans, more efficient design, and 256MB of internal storage to set gamers free of overpriced memory cards. Now the systems are receiving an unannounced storage boost, with an XboxHacker forum member braza noticing that his Japanese Arcade model sported a 4GB 4Gb Samsung NAND chip. That's twice the size of the old one, giving the equivalent of a 512MB internal memory unit. That first system was manufactured in April, and they're starting to hit US Arcade units as well. As of now we're not sure if there's a way to tell from outside the box whether you have this beefier revision of Jasper, but we're sure your local retailer wouldn't mind if you just bought their entire stock of consoles and ripped them all open to see.
Update: Oops, that's a 4Gb (gigabits) NAND chip, allowing for roughly 512MB (megabytes) of internal storage.