On: Hands-On with Microsoft's New Holographic Goggles

[nsxwolf]

Could the sensors be indeed flooding the device with terabytes of data, but the device can only sample that data at a more reasonable rate?

[semi-extrinsic → nsxwolf]

Well, from that perspective, an analog temperature sensor is flooding your ADC with infinite GB/s.

For further comparison: the fastest CPUs you can get nowadays have an aggregated memory bandwidth of ~ 90 GB/s using four lanes.

[8note → semi-extrinsic]

if you have enough pins, a custom asic can do just about whatever you want. the data flowing into the HPU is likely huge, but it is processed down into something the CPU can deal with.

[semi-extrinsic → 8note]

Yeah, well, 4x DDR4 DIMMs have 4x288 = 1152 pins. If you want to be two orders of magnitude faster than that, you're talking on the order of 100 000 pins, which is just absurd.

[snops → nsxwolf]

To give an example, a raw 4K stream at 12 bit is about 500MB/s, so unless it has 2000 4K cameras, unlikely.

[AaronFriel → snops]

I think you forgot to multiply by a frame rate, otherwise you don't have a "per second" unit. At 60fps, it's 29.66 GiB/s.

[robotresearcher → nsxwolf]

Original Kinect data rates, measured empirically by a third party:

Colour: 10.37 Mb/s Depth: 29.1 Mb/s Skeleton: 0.49 Mb/s

So roughly 40Mb/s (4 * 10^7)

Does this device produce > 1Tb/s (1 * 10^12) or 25,000 times as much data? I'd be surprised.

[joezydeco → nsxwolf]

Maybe we're counting photons now.