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s3988 vs 3310 vs 3360 Technical Differences? - Page 3

post #21 of 38
didn't see it posted/quoted yet, so:
Quote:
Originally Posted by qsxcv View Post

alrighttt
my guesstimates based on framerate transition blip pictures (visualizing smoothing thread), and delay measurements in mousecomparator (post 248 of this thread)

3988 (at least the srom(s) in the evga torq x5 and da2013):
dpi<=1550: 4ms smoothing below 0.2m/s (framerate ~3050), 2ms between 0.2m/s and 0.75m/s (framerate ~7100), 1-2ms above 0.75m/s (framerate ~12000)
1600<=dpi<=3150: 8ms smoothing below 0.2m/s (framerate ~3050), 4ms between 0.2m/s and 0.75m/s (framerate ~7100), 3-4ms above 0.75m/s (framerate ~12000)
32000<=dpi: 16ms smoothing below 0.2m/s (framerate ~3050), 8ms between 0.2m/s and 0.75m/s (framerate ~7100), 4ms above 0.75m/s (framerate ~12000)

3310 (only looked at volz's naos7000 plots and finalmouse):
all dpi: same as 3988 at dpi<=1550

9800 (i've only tried a torq x5l, which sets the sensor to a constant 12000fps)
havent checked all dpis yet
dpi=400: 2-4ms smoothing
dpi=8200: 24ms smoothing rolleyes.gifthumb.gif

am010:
according to cpate, 4frames = ~0.8ms except for g402 and g302 at dpi<=2000

3090 with srom 6x aka 4000dpi version:
not sure yet

@ncck, maybe some pads lower the 3310 malfunction speed? i doubt anyone would ever hit the malfunction speed of the 3310 in-game tbh.

as for the 3090 family, i'm getting higher malfunction speed and better-looking cursor path on rougher plastic pads. my cloth pads make all those sensors perform worse.
generally speaking, rough-ish plastic pad > cloth pad for that entire family of sensors.
post #22 of 38
Quote:
Originally Posted by decompiled View Post

I think you are a quake player like me but I LOL'd @ this.
i play cs tongue.gif
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post #23 of 38
Why would mice/sensors use different framerates at different speeds? Is there any drawback to using higher framerates at low speeds?

Also, how do you move your mice? I can barely get above 1 m/s, and yet you people here talk about 5m/s and above. Considering all the effort involved in accelerating to and then decelerating from those speeds, do you ever feel like playing with a joystick/gamepad-stick instead of a mouse? Or do you somehow actually manage to hit 5 m/s with your hands/arms instantaneously and then actually travel any significant portion at that speed?
Quote:
Originally Posted by qsxcv View Post

all of them have variable framerate. not sure about 3310/3988 but for 3360/3366 there's no way to control the framerate; it's completely automatic. i suspect it's the same for 3310/3988 as every mousetester plot i've seen shows variable framerate for those.

How/where do you see framerate in mousetester?
post #24 of 38
high framerate = more noise/junk per second from sensor images = more jitter

sensor framerates are inherently high enough that the latency effect doesn't really matter, so they have "low" safe framerates to reduce jitter at low speeds (thus improving practical surface compatibility) and increase the framerate at high speeds so that they don't lose too much correlation area between sequential sensor frames. having low correlation area wreaks havoc on speed-related accuracy variance.

as you approach the absolute maximum tracking speed of a mouse, jitter and speed-related accuracy variance both peak, and if they're bad enough, cruddy firmware can malfunction. exactly how bad it gets is related to the texture of the surface the mouse is tracking on.
Edited by wareya - 6/23/16 at 1:27am
post #25 of 38
the exposure time is far shorter than the frame period, so you do not get more noise in the images directly

afaik (according to this one patent), the sensors use a faster and less accurate tracking algorithm in the high framerate mode but a slower and more accurate one in the lower modes. so you get accuracy at low speeds but still high max tracking speeds/pcs

droppedframe: your mousepad is probably quite small tongue.gif
i'm too lazy to explain how framerate is estimated... maybe wareya can
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post #26 of 38
more noise per second not per frame

faster algos at high fps are a thing too but I assumed they weren't that important, haven't read quite enough

you can estimate framerate by finding places where nearby usb frames jump or drop in sens by a fixed ratio in a mostly even pattern and working the numbers a lot smile.gif
post #27 of 38
Quote:
Originally Posted by qsxcv View Post

droppedframe: your mousepad is probably quite small tongue.gif

Yeah it is - I even usually have them in "portrait" rather than "landscape mode". I'm sort of a lazy person with a cluttered desk. Doesn't make values of 5 m/s any less impressive though.
post #28 of 38
5m/s is fairly easy even on a pad only 40cm wide

10m/s on the other hand... biggrin.gif
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post #29 of 38
I have a p-sr and only hit 1.5 m/s ingame because high sensitivity playstyle

i have a hard time hitting 2m/s artificially
post #30 of 38
Thread Starter 
In game I usually cap out at ~4.5m/s, maybe slightly higher when just turning around. I play at around 58cm/360.

What about that smoothing effect from earlier in the thread for the s3988? Would that not be even more noticeable for the 3366 since there are 4 fps steps rather than 3? Not like that actually matters, just curious.
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