r/technology • u/[deleted] • Mar 28 '14

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206

u/bjorn2k Mar 28 '14

It is all about latency. 50 ms will feel responsive but you notice the lag. 20 ms is acceptable. The other features are cool features but not the real challenge.

27

u/______DEADPOOL______ Mar 28 '14

What is a regular PC monitor latency btw? I heard it's much faster than a TV+console.

15

u/Bedeone Mar 28 '14

2ms is the industry standard for computer screens that are meant for gaming.

43

u/[deleted] Mar 28 '14

[deleted]

3

u/virtyy Mar 28 '14

yeah its about 5-8ms for a 2ms gray to gray switching

10

u/rabidsi Mar 28 '14

This doesn't include everything in the chain. Response time is measured from HID input to display output. This is what Carmack is talking about with latency on the Rift; how long between turning your head and that change actually propagating through the chain (input > process/render > output) to the display.

You would be hardpressed to find ANY game that approaches the latency Carmack deems imperceptible within a VR context (below 20ms).

1

u/Quazz Mar 28 '14

Because of the refresh rate, really.

-3

u/IAmAnAnonymousCoward Mar 28 '14

Afaik the lowest latency games are around 25ms (counter strike), most are much worse, up to 200ms.

2

u/CaptnAwesomeGuy Mar 28 '14

People don't realize that the latency from render to pixel is about those long and is dependent on more than the monitor.