Great thread! https://danluu.com/keyboard-latency/
benchmarks claim that the Apple II measured the lowest input device -> on screen latency. Thoughts? These tests claim lower latency is possible today than Dan measured in the Apple II: https://www.blurbusters.com/gsync/gsync
a) Can one have the lowest latency computer to date using the latest hardware?
b) What is the lowest latency hardware, in your view?
Secondly, there are claims of optical keyboard switches being the lowest latency. I'm trying to replace my mechanical keyboard's switches with the lowest latency - but even after asking manufacturers it is hard to get claims & benchmarks. Few seem to care about determining keyboard switch latency. Thoughts on which are the lowest? And yes, I'll be setting the keyboard to 1ms polling - and currently trying to determine how it scans the keys (some scanning methods seem to make polling 'per key' a lot more than 1ms).
Thirdly, testers now seem to concur that the top bluetooth & wired mice are the same latency? Do you concur? If so, then what do you think is the lowest latency (in sensor & clicker) *wired* mouse?
Fourthly, is there any evidence USB4 will bring lower latency? I haven't seen any.
Fifth, Dan seems to be claiming that the latency in modern computers is partially coming from the components between the screen & input devices. Do we have any accurate measurements of that part of the path? I don't see how it (motherboard, CPU, GPU, RAM) would cause more than 1ms latency (not including heavy processing needed to draw the graphics for a game, or something - I'm just talking about button presses and cursor movement).
Sixth, anyone here overclocking to 2000Hz+ on Linux?
Seventh, do you know if you can overclock the polling rate of an Apple magic trackpad - or any other top trackpads? I've had trouble finding any info on increasing the polling rate of trackpads.
Thanks - this is one of the best low latency threads on the web right now!