The CERN Large Hadron Collider sensors[0]

(not head-mounted!)

[0] http://en.wikipedia.org/wiki/Large_Hadron_Collider

Thanks for the costume idea!

Nope, that's 25 petabytes per year - under 1 gigabyte per second.

It's not constantly producing data though.

A single 4K2K RGBD sensor at a high enough refresh could generate something in the 100Gbps range. The device has at least 2 (possibly 4?) forward facing sensors. It's presumably also doing inward facing gaze tracking, audio and IMU.

As a point of reference the Leap Motion Dragonfly has 2 x 3K sensors w/ 225fps color and 720fps tracking.

Presumably the "HPU" is an ASIC that bakes in some sort of SLAM/positional tracking, skeletal tracking, and gaze tracking.