That element is the UMD, which puts demands on the portable system that many expected prior to the PSP's release to have significantly impact on the system's battery life.

Eyes-On: Spider-Man 2 UMD Video An entire flick on one PSP UMD -- details on special features and video quality.

PSP Go has no love for the UMD. The £224 ($249) PSP Go lacks the UMD drive from previous versions, relying solely on digital downloads to purchase games.

Those left holding UMD discs are out of luck. One rumor has it that Sony will supply in-store kiosks to allow gamers to dump UMD data onto their PSP Go!, avoiding the pain of repurchasing a game ...

Sony says that it will offer a digital replacement for UMD games if you buy a PSP Go. Some maybe even be for free. "We're in the midst of putting together a good will program", John Koller told ...

At last, Sony's other worst-kept secret, the UMD-less PSP Go, is working its way through retail channels this week. The device itself is a marked improvement, but of course that's not the whole ...

The new, UMD-less PSP Go is an absolute dream for Sony. Since it lacks a way to play games purchased at retail, Sony gets to set the prices for every piece of content bought on the system. Who ...

Following the thread of previous rumors, the PSP Go! will likely ditch the UMD drive in favor of digital downloads that plant directly on the new internal flash memory unit.