On November 6, 2006, Microsoft announced Xbox Live Video, an exclusive video store accessible through the console. Launched on November 22, 2006, the first anniversary of the Xbox 360 launch, the service allows users to download high-definition and standard-definition television shows and movies through Xbox Live onto an Xbox 360 console for viewing.
Xenos contains 48 unified shader units, which are capable of both vertex and pixel shading operations. This is in contrast to older graphics processor designs which utilize separate specialized units for these tasks.
While the first Xbox's graphics processing unit was produced by NVIDIA, the Xbox 360 uses a chip designed by ATI called Xenos.
Xbox Live Silver is free of charge and allows users to create a user profile, join on message boards, access Microsoft's Xbox Live Arcade and Marketplace and talk to other members.
Updated emulation profiles can be obtained through Xbox Live, by burning a CD with profiles downloaded from Xbox.com, or by ordering an update disc from Microsoft.
he Xbox 360 can connect to Xbox Live through an optional wireless network adapter on a home network through a wireless router.
Xbox was first released on November 15, 2001 in North America, February 22, 2002 in Japan, and on March 14, 2002 in Europe.
Backward compatibility is achieved through software emulation of the original Xbox.
