this post was submitted on 16 Jun 2024
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If that's how TFTs worked we wouldn't have vsync settings in games.
~~No? Afaik vsync prevents the gpu from sending half drawn frames to the monitor, not the monitor from displaying them. The tearing happens in the gpu buffer~~ Edit: read the edit
Though I'm not sure how valid the part about latency is. In the worst case scenario (transfer of a frame taking the whole previous frame), the latency of an lcd can only be double that of a crt at the same refresh rate, which 120+ hz already compensates for. And for the inherent latency of the screen, most gaming lcd monitors have less than 5 ms of input lag while a crt on average takes half the frame time to display a pixel, so 8 ms.
Edit: thought this over again. On crt those 2 happen simultaneously so the total latency is 8ms + pixel response time (which I don't know the value of). On lcds, the transfer time should be (video stream bandwidth / cable bandwidth) * frame time. And that runs consecutively with the time to display it, which is frame time / 2 + pixel response time. Which could exceed the crt's latency
BUT I took the input lag number from my monitor's rtings page and looking into how they get it, it seems it includes both the transfer time and frame time / 2 and it's somehow still below 5 ms? That's weird to me since for that the transfer either needs to happen within <1 ms (impossible) or the entire premise was wrong and lcds do start drawing before the entire frame reaches them
Although pretty sure that's still not the cause of tearing