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BenQ Knowledge Center / Knowledge Center ｜BenQ / Gaming Projectors and Input Lag: What You Need to Know Before Your Purchase

Gaming Projectors and Input Lag: What You Need to Know Before Your Purchase

BenQ
2023/12/29

As all hardcore gamers know, reaction time – the ability to instantly spot your opponent and/or detect changes in your surroundings and react accordingly – is a matter of life and death. When it comes to hardware, it is this underlying idea that drives the purchasing decisions for much of the gaming community. Products that allow for quicker reaction time get the buy, while products that are slow or cause lag get left by the wayside. This rule also applies to the displays and projectors that they connect their consoles to, so as to ensure that they have the edge when push comes to shove.

 

 

a man is playing video games with BenQ projectors

 

 

As the use of high-performance gaming projectors grows, what should a gamer look for in a projector with regards to performance when contemplating a TV-free gaming setup? The following is quick primer on some of the terms and concepts you need to be aware of when looking at gaming projectors:

  • What is Latency / Input Lag Time?
  • What is Refresh Rate / Refresh Frequency?
  • Frames as Measured by Time

    • What is Latency / Input Lag Time?

    Latency time or input lag time refers to the time between when the audio/video signal from the input source (the gaming console) is received by the projector and when the projector actually projects the video that corresponds to that signal. Low latency or low input lag time is one of the key things to focus on in terms of determining whether a projector will boost or hamper your gaming abilities, as you want a projector that instantaneously projects the video that the console is transmitting to it to ensure that you’re able to make split second decisions.

    NOTE: These two terms should not be confused with response time. Whereas response time refers to the duration of time between when a button is pushed on a controller and when the character performs the corresponding action and involves all the hardware involved in the gaming setup, while latency and input lag refers only to the part of the equation involving the input signal and projector. 

    Low input lag projectors play and important role in gaming

    BenQ Low Input Lag Gaming Projector

    Other Projector

    What is Refresh Rate / Refresh Frequency?

    Refresh rate or refresh frequency is the rate at which a projector projects the images or frames in a video broadcast. Refresh rate/frequency is measured in hertz (Hz) which indicates how many cycles or frames is shown per second, meaning that a projector with a refresh rate of 120Hz projects 120 frames every second. To think of it in another way, the refresh rate for a projector is essentially the same as the frame rate for a video camera, and Hz is the same as frames per second (FPS). When looking for a projector, a higher refresh rate means clearer videos with cleaner motion and less blur, as a projector with a higher refresh rate pumps out more images/frames per second.

    Frames as Measured by Time

    Another key part in evaluating the performance of a projector is figuring out the length of time occupied by each frame projected by the projector. To do so simply invert the refresh rate for the projector (i.e. divide 1 by the refresh rate) and then convert that number into milliseconds; so, for a projector with a refresh rate of 120Hz each frame represents 8.3 milliseconds. This type of conversion helps tie together both concepts described above as it allows for a way to express the latency or input lag for a projector (as a factor of its refresh frequency) in units of time. As a result, most gaming projector brands use milliseconds in their specification tables to express their projector’s input lag or latency values, thus acknowledging that time is one of the most important factors in gaming.

    Recommended Console Gaming Projector

    X300G with 84% DCI-P3 BenQ CinematicColor and HDR-PRO not only delivers awe-inspiring 4K details with minimal 4.16ms input lag but also offers auto 3D keystone & optical motorized zoom for swift setup while immersing you in cinematic virtual surround sound.

    X3100i with 100% DCI-P3 BenQ CinematicColor and HDR-PRO delivers awe-inspiring 4K details in 4LED display with a minimal 4ms input lag while immersing you in cinematic virtual surround sound.

    X3000i with 100% DCI-P3 BenQ CinematicColor see true colors in HDR10 4LED and listen to movie-like virtual surround sound and action with 4ms input lag.

    TK700STi, the console gaming projector offering RPG, FPS, SPG game modes without sacrificing true 4K UHD graphics with lightning-quick 16ms input lag.

    TH671ST with low input lag, 1080p, 3000 lm, you can cast 100” pictures from just a 4.9ft short throw distance, bringing games, movies, and TV to life.
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    Learn More

    Projector Input Lag and Gaming Performance

    What exactly is input lag? How do you measure input lag on a projector? How can you reduce input lag on your projector? Is input lag the be-all and end-all for judging the performance of a projector? These are the questions this article will seek to answer...

    How to Calibrate Your Gaming Projector for the Best Picture?

    Good gaming projectors arrive with great image calibration out of the box to enable the best gaming experiences with PS5 and Xbox Series, but here’s a good to help just in case.

    Do Gaming Projectors Have High Refresh Rates?

    Gaming projectors now offer 1080p 120Hz and 4K 60Hz with minimal input lag. High refresh rates and huge screens make projectors a very attractive choice for console and PC gamers.

    Best Gaming Projector 101 and What to Know in 2022 When Shopping

    Do projectors support gaming consoles? And to what degree? Why refresh rate is crucial for a gaming projector? What other specs should I pay attention to?

    Gaming Projectors Better for Split Screen and Local Co-op on 120" Screens

    A gaming projector offers big screen entertainment for 4K split screen, co-op, and local multiplayer gaming. Fun with friends and family on a 120" screen.

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