I am not convinced about the idea of 8000Hz mice

Ask about motion blur reduction in gaming monitors. Includes ULMB (Ultra Low Motion Blur), NVIDIA LightBoost, ASUS ELMB, BenQ/Zowie DyAc, ToastyX, black frame insertion (BFI), and now framerate-based motion blur reduction (framegen / LSS / etc).
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soloine
Posts: 9
Joined: 22 Dec 2024, 20:53

I am not convinced about the idea of 8000Hz mice

Post by soloine » 23 Dec 2024, 19:25

People here are trying to promote 8k mice. The reasoning does not make sense to me.
If the desired pan rate is 600px/s and you have a 100hz mouse (6px per Hz) and the monitor is 60Hz (10px/frame if smooth):
  • Monitor image published (from start) | target viewpoint from start of pan | mouse position as of last update
    1/60(0.0166s) | 10px | 6px (update back at 1/100 or 0.0100s)
    2/60(0.0333s) | 20px | 18px (from 3/100 or 0.0300s)
    3/60(0.0500s) | 30px | 30px (0.0500s, same)
…and cycle repeats. You get three overlaid images as your eyes follow the figure: -4px -2px and 0px (interpreted as ±2, or 40% in blur at this pan rate).

8000Hz mouse? 144Hz monitor? While that would potentially increase the zeroes in the fractions, the better recommendation is to choose a mouse (or configure if possible) that is any multiple of the monitor refresh rate (including 1×). If you have a cheap 100Hz mouse then it is fine paired with a monitor set at 100Hz, and this presumes the video card can keep up with the f/s (it may take an intermediate reading of your super-fast mouse for the next frame), so bottom line (potentially), it’s best to set the mouse/monitor to the same (or multiple of the) update rate, and not retire that sub-100Hz gaming mouse (they seem to exist - I’ve got a logitech, seems to be 60 - I will admit that is slow with today's monitors but you see their intent. Slow mice could be the cause of the stutter that G-SYNC was intended to stop). This writeup is to cover accelerometers too.

C.

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RealNC
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Re: I am not convinced about the idea of 8000Hz mice

Post by RealNC » 24 Dec 2024, 09:19

Keep in mind that the mouse is not synced to the display. There's no "vsync for mice." Mouse rate being a multiple of the refresh rate won't help much. It's really the same problem you get when using Nvidia fast sync or AMD enhanced sync and you get hiccups in smoothness unless you can reach a framerate that's much higher than the refresh rate. Anything less than 300FPS on a 60Hz display will produce hiccups from time to time.

1000Hz polling is enough for up to a 165Hz refresh rate. The mouse cursor gaps during fast motion are very evenly spaced. It's good enough at 180Hz too, there's only minimal variance in the gaps that start to appear. But it's acceptable and not noticeable unless you really focus on it, trying to see it. At 240Hz though, the gaps get more noticeably uneven. 2000Hz would fix that. I guess 500Hz displays (540 or whatever they are) might need 3k?

8k is useless right now. I suppose if/when 1000Hz displays arrive, it might be useful there. There's also the issue of 8k not being actually achievable, according the tests I've seen a while ago. They actual rate fluctuates between 6k and somewhat over 7k. Up to 4k it seems stable.

Now, instead of polling that fast, something that syncs the mouse to the display would be the correct solution to the issue, but I don't see how that would be possible.
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Kyouki
Posts: 195
Joined: 20 Jul 2022, 04:52

Re: I am not convinced about the idea of 8000Hz mice

Post by Kyouki » 15 Jan 2025, 04:21

RealNC wrote:
24 Dec 2024, 09:19
There's no "vsync for mice."
Not even Motion Sync? Which is Present in the sensors.

4000Hz is ideal for 360hz, 8000Hz is for going towards the 1000Hz displays!
CPU: AMD R7 5800x3D ~ PBO2Tuner -30 ~ no C states
RAM: Gskill Bdie 2x16gb TridentZ Neo ~ CL16-16-16-36 1T ~ fine tuned latency
GPU: ASUS TUF 3080 10G OC Edition(v1/non-LHR) ~ disabled Pstates ~ max oced
OS: Fine tuned Windows 10 Pro, manual tuned.
Monitor: Alienware AW2521H ~ mix of ULMB/Gsync @ 240hz/360hz
More specs: https://kit.co/Kyouki/the-pc-that-stomps-you

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