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Does this mean 800 dpi is the best on PMW3366? Also cpate says higher dpi 2-3ms more responsive

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neilyo

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Discussion starter · #1 ·
for the 800 dpi question: http://www.overclock.net/t/1561041/reverse-engineering-3366/100#post_24142200

What exactly does it mean when higher dpi is a few ms more responsive? That sounds like an advantage, like higher hz, but I'm not sure. He kind of contradicts himself by saying that none of the default dpi's are any better than another, but I think he meant 'other than what I already said above' since he was asked about a 'different type of advantage' afterwards.

 
#2 ·
3200(in this case) is basically the sweet spot out of benefitting from higher cpi, but without the drawbacks kicking in. Unfortunately it seems that the limiting factor are the games, it felt slightly better to me in CS:GO and the Q2Pro client(especially at direction changes), on the other hand it felt off to me in Frostbite based games, didnt bother with UE3/4 Games as there wasnt anything to play at that time.
 
Discussion starter · #3 ·
The highest I've tested was 1600 compared to 800 and 1200. To me 1600 felt better for close-mid range tracking with consistent auto-fire weapons, but it felt too sensitive for long range tracking with auto-fire weapons. For 1 shot flicks or burst shot weapons I think the lower DPI felt better, but that's just based on feeling and not doing a long term test.
 
#4 ·
3200 felt a bit better (i.e. snappier) to me than 1600. Might be placebo though, so I've left it at 1600 like all of my other mice.
 
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#10 ·
Bald Mouse Jesus has spoken again.



"Dear OCN thread: use whatever dpi you want, but 3200 is measurably faster than 400. 12k even faster, but diminishing returns/engine oddness."
 
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#13 ·
Quote:
Originally Posted by Leopardi View Post

I guess it wasn't placebo, when I noticed the same on EC2-A.
Click to expand...
Given that the EC2-A doesn't use a 3366 it would not be related to the topic at hand.
 
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#14 ·
The negation he talks about is referring to smoothing kicking in at 2100 dpi for example?

If so a list of the most popular 3360 and where smoothing increases could be useful. Regardless I don't think it's A big deal since 400/800 are so similar to me. I just use 800 since I play 1080p
 
#15 ·
The amount of smoothing and the treshold at which it kicks in should be the same across every 3360 mouse, namely 32 frames at or above 2100 CPI. Razer's 3389 is the only exception I know of.
 
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#17 ·
Quote:
Originally Posted by Leopardi View Post

But if the more advanced 3366 does this, why wouldn't the same phenomenon be present in the earlier iteration as well? Maybe even worse.
Click to expand...
Pretty sure this is specific to the 336x. 3310 also stems from the A9800, so they're entirely unrelated. CPate might be able to clear this up though.
 
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#19 ·
He explains it pretty clearly in his next few tweets. This is a universal characteristic of higher DPI but only the 3366 can benefit past a certain point due to its handling of higher DPI values (ie: not adding smoothing).
 
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#20 ·
I very much doubt Chris actually understood what the engineers were telling him, if he's interpreting CPI setting subdivisions as literal "slices" instead of an abstraction in the calculations. This is especially evident since he says "2-3 ms more reactive" when the duration of single frames are in the vicinity of less than a quarter of a millisecond at the most. The only possibility that responsiveness can be affected to that degree on the 3366 is if the sensor has smoothing on the order of 10 frames.
 
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