Delivering 720p video capture and playback, advanced 3D technology, and intuitive user interface capabilities in an ultra-low-power applications processor design, the NVIDIA® Tegra™ APX delivers the ultimate visual experience on a mobile device.

INTUITIVE
Revolutionary, desktop-class user experience enabled by ULP (Ultra-Low-Power) NVIDIA® GeForce® GPU.

ENGAGING
HD 720p video capture and playback on a mobile device.

CONNECTED
Enrich your visually-intense, connected lifestyle with a new generation of NVIDIA Tegra APX applications processors.

• NVIDIA HD AVP (High Definition Audio Video Processor) with NVIDIA® PureVideo® technology
  • Capture or playback HD 720p movies with your mobile device
  • Unprecedented picture quality and ultra-smooth, vivid movie playback with low CPU use and power consumption
• Superior Imaging
  • Take sharp and steady pictures with a 12 MP camera with a built-in image stabilization algorithm
  • Integrated image signal processor (ISP) with proprietary algorithms that enables image and video stabilization, face tracking, and advanced trick modes.
• NVDIA ULP GeForce technology
  • GeForce graphics technology architected for low-power applications
  • Superior 3D user interface capabilities based on a unique compositing framework that delivers seamless web browsing
• NVDIA nPower™ technology
  • Enables the industry’s longest HD video and MP3 playback on your phone or mobile device
  • Optimizes system power use
• True dual-display subsystem for flexibility of use
  • Entertainment—watch a movie on an HDMI display and use your phone as a remote control device
  • Business—present your proposal on a FWVGA projector using your phone as a pointing device
  • Personal—show your favorite photos on a television while previewing them on your phone

Source : http://www.nvidia.com/object/apx_2500.html