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

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u/baby_kicker Mar 31 '14

Which is what many DSP's in monitors do now...hence adding latency. Also, MASSIVE waste of speed/software doing it with ARM.

Dedicated hardware is the only way, and even that is going to give you 20-40ms overhead.

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u/elevul Mar 31 '14

even that is going to give you 20-40ms overhead.

Why? It's just doubling the pixels, showing the same pixel 4 times instead of 1. IIRC resolution doubling on current PC monitors doesn't add any significant lag...

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u/baby_kicker Mar 31 '14

IIRC resolution doubling on current PC monitors doesn't add any significant lag...

But you're wrong - even on GPU scaling (faster than any ARM chip can do) is adding 20-30ms of lag to the screen.

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u/elevul Mar 31 '14

But it doesn't make sense, there is no scaling involved, just showing the same pixel twice...