The Art of Storage storage and memory to support trouble-free viewing of the content in case of intermittent connectivity to the Internet or an outside video source. Let's take a look at the requirements for virtual reality applications today and in the near future.3 Many virtual reality (VR) applications require Figure 1. Comparison of optimal viewing distance for high-definition (HD) and 4K ultra high-definition (UHD) video versus display diagonal size (Permission from Coughlin Associates). video data rates of 100-400 Mbps with latencies as low as 20 ms and up to 60-fps frame rates with 10 bits per pixel. Future conventional (flat image) VR with higher resolution will require 120-240 fps, 12-bit-per-pixel video, and less than 10 ms latency with data rates of several Gbps. Even 1 minute of this high-resolution content may require 17 GB, which is about 1 TB for an hour of content. So how much memory and storage are being used in VR HMDs. Let's take a look at a teardown of a Magic Leap One to find out (see Figure 2).4 Figure 2. Magic Leap One Teardown highlighting memory and storage on the device circuit board. (a) Front of the circuit board. (b) Back of the circuit board. (Permission from iFixit). 52 IEEE Consumer Electronics Magazine