difference between 400 dpi and 800 dpi under 1080p

[cchhqq]

Hi. I am a player of bf series, ow and pubg. I play under 1080p. I watched several videos on youtube talking about low dpi and high dpi. Seem like that some of them says that 400 is always better and some says that higher dpi and lower in game sens is better. So... which one is better 400 or 800 for same viewspeed in game. if you use 800 and lower in game sens, wont you feel that mouse is too fast when you browse? However, if I use 400, I kind of feel like that mouse is too slow in games like league of legends....

[Drimzi]

Edited January 28, 2018 by Drimzi

[cchhqq]

50 minutes ago, Drimzi said:

Old mice sensors worked best at certain DPIs, such as 400/800/1600, and 400 was generally the most stable. With a new mouse that has a 3360+ sensor, you don't have to worry about this. These mice generally have 200-12,000 DPI.

When it comes to what is better, higher DPI and lower game sensitivity is better. The game sensitivity defines the rotation amount for a mouse count. So more counts while maintaining the same distance will result in a smoother transition. Basically the game sensitivity value will define how smooth the aim will be, and the DPI will define the actual 360 distance. You may not notice much difference except when doing very slow movement, due to the polling rate, where the mouse counts are going to be queued anyway and delivered every 1 ms (1000 Hz polling rate).

It is very much similar to comparing frame rates. In this analogy, DPI will be FPS and the Polling rate will be like the monitor refresh rate. The DPI will determine how many counts are sent when you move your mouse, and these counts are going to be received by the computer every 1ms, just like how FPS will determine how many frames there are, and the refresh rate will present the frame every 1000/Hz ms.

At the end of the day, if you swipe your mouse fast to a position, all the extra mouse counts from 800 DPI (which rotate half the amount) will all be queued together and delivered at the next poll, which will be pretty similar to 400 DPI and unnoticeable. Your aim may feel more snappy or floaty, because there will be more counts that will fit before the next poll, and the higher DPI will result in a lower threshold of physical movement to trigger a mouse count, effectively resulting in lower input lag.

 

You lower the windows sensitivity as well using Windows Pointer Speed (WPS). If you wanted the mouse speed of 400 DPI but at 800 DPI, you would reduce the WPS to 4/11 for a 0.50x multiplier. This will ignore 50% of the counts delivered by the mouse, effectively dropping it to 400 DPI.

Thank you so much, Your explaination makes much more sense than those videos which just say higher dpi will be smoother. But does it mean that i need to use the dpi as high as possible? or the dpi will be the same if it beyonds certain amount? like 1600 or 3200? I am using mouses with 3366 and 3310. I heard that 3310 is also native on all levels, so I guess that every dpi is also same accurate for 3310? 

[Drimzi]

Edited January 28, 2018 by Drimzi

[MkjK]

On 10/14/2017 at 7:33 AM, Drimzi said:

higher DPI and lower game sensitivity is better.

Not really. I understand your logic but I don't think it's entirely that easy.

The sensor will always read the surface in the same way regardless of what you set the DPI to, and higher DPI means that the mouse has less information to work with when doing each motion count translation (the internal algorithms will provide disproportionately better results when they are given more data).
Both Pixart and many mouse manufacturers recognize this when implementing a sensor, and they often enable (more) smoothing at the DPI levels where they think most users would otherwise notice lesser accuracy (when going above 2000 DPI for the 3360, for example).

Technology aside, for humans I think it mostly comes down to preference.
While high DPI with low game sensitivity should theoretically be better (all else equal) just like you said, you have to keep in mind that:
A. Alot of people will try to be perfect within the boundaries that they are given, and a smaller "motion grid size" than they can control perfectly can be fatiguing or slow them down.
B. High DPI will pick up involuntary movements, which many find to be annoying. The only ways to filter this out is to use very low overall sensitivity (even lower than what your game or play style requires) or to calibrate the DPI to match your own ability and what you are trying to do.

I guess a simpler way to look at this is that many people prefer their own precision to exceed the precision of the equipment, and perform worse when it does not.

Those are just some points to consider.

There's benefits to low DPI and to high DPI. My recommendation would be for everyone to use whatever they like more and/or gives better results based on their experience.
In the past I've experimented with a wide range of DPI and in-game settings but I currently use 600-650 DPI for most things which has worked really good for me.
I would say it's a trade-off between the "smoothness" of high DPI and the "griddyness" of low DPI.

[DPI Wizard]

I have analyzed quite a few sensors now (all Pixart) with a machine far more accurate than humans (reproducibility better than 0.005 inches/0.1 mm), and I have not seen any trace of smoothing or less accuracy for higher DPI. Take these two examples of identical movement with 400 DPI and 12000 DPI for the Logitech G900. The slight variation in drift is not humanly possible to detect. This is an infinity symbol drawn 10 times over itself.

There is in this case a slight variation in how close to 400 and 12000 DPI the sensor actually is (hence the small size difference of the figures), but again this has nothing to do with smoothing or movement accuracy.

Now some sensor might have issues with high DPI, but I don't see this being the norm.

[Drimzi]

Edited January 28, 2018 by Drimzi