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Input Lag of TVs

What it is: Delay between input and onscreen reaction.
When it matters: Video games; when TV is used as PC monitor.
Score distribution

A television’s input lag is the amount of time that elapses between a picture being generated by a source and that image appearing onscreen. When gaming, you’ll experience this as the time between making an input and seeing the reaction appear onscreen. It’s only important for gamers, and even then, different gamers will have different sensitivity to lag.

We record the lowest input lag time of which a TV is capable, the amount of lag present when motion interpolation is enabled, and the amount of lag a TV has when using our calibrated settings at different resolutions and refresh rates.

Update 03/09/2018: We have added new input lag tests with the 1.2 test bench (4k @ 120Hz and Variable Refresh Rate). We have also removed rarely used tests (1080p @ 60Hz outside game mode, 4k @ 60Hz @ 4:4:4 + 8 bit HDR).

Update 09/21/2017: We have changed our testing methodology to use a new input lag tool. As a result, we have now measured 1080p @ 120Hz input lag for all supported TVs we have in our lab.

Update 09/14/2016: We are now testing input lag in various resolutions, including 4k and HDR. We've retested all 2016 4k TVs that we bought so far. For testing 4k and HDR, we are using the Leo Bodnar tool chained into the HDFury Integral and the HDFury Linker to upscale to 4k and inject HDR metadata. These tools don't add any significant input lag to the measurements.

Note: Input lag is not the same as response time. The response time is the time it takes a pixel to shift from one color to another, which is significantly shorter than the input lag time. Response time is related to motion blur.

If you want to see our test for Monitors, check our "Input Lag of Monitors" article. 

Test results

For older models, see our results for 2013 and 2014 TVs.

When it matters

Input lag only matters for playing video games, either on a console or on a PC.

With fast-paced games like shooters and fighting games, quick reflexes are key. Lower input lag can mean the difference between a well-timed reaction and a move that takes too long to register and ends up countered by the opponent before it can ever be performed. This lag doesn’t matter for watching movies, though, so unless you’re a gamer and are worried about PC peripheral lag, or Nintendo, Xbox One, or PS4 controller input lag (or other controllers), you have nothing to worry about. Most people will not notice under 50 ms of input lag while more competitive gamers should look for a TV that can do below 40 ms. Almost everyone will also find anything over 100 ms terrible to play with.

Our tests

1080p @ 60Hz Input lag

What it is: Lowest input lag possible on TV with a 1080p @ 60Hz @ 4:2:2 input.
When it matters: Video games and also when TV is used as PC monitor.
Good value: < 40 ms
Noticeable difference: 15 ms
Score distribution

This input lag test represents the lowest lag a TV is capable of achieving with a 1080p @ 60Hz signal. This number is important for most gamers on console or PC which have a Full-HD or 1080p output, such as the PS4 and Xbox One. It is the lowest input lag the TV is capable of achieving, usually in a 'Game' mode. We use a custom tool to perform this test, as it provides an accurate, continuous measurement of a TV’s input lag.

1080p @ 60Hz + HDR Input lag

What it is: Lowest input lag possible on the TV when displaying 1080p @ 60Hz @ 4:2:2 @ 10 bit with HDR.
When it matters: HDR video games from a console outputting a 1080p signal.
Good value: < 40 ms
Noticeable difference: 15 ms
Score distribution

This test is similar to the 1080p @ 60Hz Input lag test; however, an HDFury Linker is chained between the PC (pattern generator) and TV. This allows us to send an HDR signal and measure the input lag with the same custom tool as other input lag tests. This is important for PC gamers who plan to use HDR at a full-HD resolution and is usually lowest in 'game' mode.

1080p @ 60Hz Outside Game Mode

What it is: Lowest input lag possible on the TV when displaying 1080p @ 60Hz @ 4:2:2 in a fully featured picture mode.
When it matters: For playing video games while retaining access to all features of the TV.
Good value: < 40 ms
Noticeable difference: 15 ms

Our 1080p @ 60Hz Outside Game Mode measurement represents the amount of input lag that is present when a TV uses our posted review settings – no game mode, no motion interpolation. It is useful for those who want to game with the most accurate image or with processing options available.

1080p @ 120Hz

What it is: Lowest input lag possible on TV with a 1080p @ 120Hz input.
When it matters: When the TV is used as PC monitor.
Good value: < 40 ms
Noticeable difference: 15 ms

This is similar to the 1080p @ 60Hz input lag test, however, a 120Hz signal is sent to the TV. It is useful for those who enjoy gaming at high refresh rates on a PC.

4k @ 60Hz Input Lag

What it is: Lowest input lag possible on TV when displaying 4k @ 60Hz @ 4:2:0.
When it matters: Video games and also when TV is used as PC monitor.
Good value: < 40 ms
Noticeable difference: 15 ms
Score distribution

This test is similar to the 1080p @ 60Hz Input lag test; however, a higher resolution 4k @ 60Hz signal is sent to the TV instead.This is the amount of lag that is best for gamers on newer consoles such as the PS4 Pro and Xbox One X or PC and is pretty important for most fast-paced, competitive games.

To get the lowest amount of lag on most TVs, it’s necessary to enable game mode. On some, though, special steps are required, which we always list on the settings page of each TV. We use the same custom tool as the 1080p @ 60Hz input lag for this test.

4k @ 60Hz + HDR Input lag

What it is: Lowest input lag possible when displaying 4k @ 60Hz @ 4:2:0 @ 10 bit signal with HDR.
When it matters: HDR Video games.
Good value: < 40 ms
Noticeable difference: 15 ms
Score distribution

Similar to the 1080p @ 60Hz + HDR Input lag test; however, a 4k @ 60Hz signal is sent to the TV before the HDFury Linker injects HDR metadata. A low 4k @ 60Hz + HDR input lag number is important for people playing HDR games on new consoles (Xbox One X or PS4 Pro) or with a PC.

4k @ 60Hz @ 4:4:4 Input Lag

What it is: Lowest input lag possible on the TV when displaying 4k @ 60Hz with proper 4:4:4 chroma subsampling. The test is usually conducted with a 4k @ 60 Hz @ 4:4:4 signal, but a 4k @ 60 Hz @ Full RGB signal may be used if it's required for the TV to show proper 4:4:4 chroma subsampling.
When it matters: PC Monitor
Good value: < 40 ms
Noticeable difference: 15 ms
Score distribution

This input lag test represents the lowest lag a TV is capable of achieving when displaying a 4k @ 60Hz @ 4:4:4 signal. You can read more about 4:4:4 here, however, it is generally only useful for PC use. For most TVs, this requires changing to a PC mode or input icon, however, you can see our settings page of any TV for more information.

For this test we use the same method as other input lag tests, however, we additionally test that chroma subsampling is displayed correctly.

4k @ 60Hz @ 4:4:4 + 8 bit HDR Input Lag

What it is: Lowest input lag possible on the TV when displaying 4k @ 60Hz @ 8 bit + HDR with proper 4:4:4 chroma subsampling. The test is usually conducted with a 4k @ 60 Hz @ 4:4:4 @ 8 bit signal, but a 4k @ 60 Hz @ Full RGB @ 8 bit signal may be used if it's required for the TV to show proper 4:4:4 chroma subsampling.
When it matters: PC Monitor with an HDR capable graphic card
Good value: < 40 ms
Noticeable difference: 15 ms
Score distribution

This test is performed in the same way as the other HDR input lag tests, however a 4k @ 60Hz @ 4:4:4 8 bit signal is sent to the TV. It is useful for those who game in HDR on PC and want to ensure text is clear across all backgrounds. For most TVs this requires changing to a PC mode or input icon. Slightly more banding may be visible than 10 bit HDR, however the bit depth is limited by the HDMI 2.0a standard.

4k @ 60Hz Outside Game Mode

What it is: Lowest input lag possible on the TV when displaying 4k @ 60Hz @ 4:2:0 in a fully featured picture mode.
When it matters: For playing video games while retaining access to all features of the TV.
Good value: < 40 ms
Noticeable difference: 15 ms

The 4k @ 60Hz outside game mode measurement is similar to the other 'Outside Game Mode' test, but with a 4k @ 60Hz signal. Game mode disables many of the picture options a TV has, so this test is useful for people who want to play games with all of the TV’s settings available to them.

We use the same testing process as for the first test, only we don’t enable any settings other than what is used by our test calibration and send a 4k @ 60Hz signal.

4k With Interpolation

What it is: Lowest input lag for 4k @ 60 Hz @ 4:2:0 content when the motion interpolation feature is turned on.
When it matters: When you want to play video games with the Soap Opera Effect enabled.
Good value: < 40 ms
Noticeable difference: 15 ms

This input lag time represents the lowest amount of lag a TV can get with the motion interpolation feature (soap opera effect) turned on and a 4k signal. If you want to increase the frame rate of videos by adjusting the TV’s settings, this is a test you should care about. Just keep in mind that this setting will usually have significantly higher input lag than the TV’s minimum, and so isn’t great for competitive games (it works well for most RPGs and turn-based games, though).

We use the same testing process as for the first test, only instead of enabling game mode, we enable motion interpolation at its highest setting.

On most TVs, this isn't playable for fast games. Some people chose to live with the higher input lag in order to get the smoother motion. Learn more about motion interpolation.

4k @ 120Hz

What it is: Lowest input lag possible on TV with a 4k @ 120Hz input.
When it matters: When the TV is used as PC monitor.
Good value: < 40 ms
Noticeable difference: 15 ms

This is similar to the 1080p @ 120Hz input lag test, however, this uses a much higher bandwidth 4k signal instead. It is useful for those who can game at high resolution and high refresh rates on PC.

Variable Refresh Rate

What it is: Lowest input lag possible on the TV when its Variable Refresh Rate feature is enabled and it is sent a 4k signal.
When it matters: When gaming with a device which supports variable refresh rates, such as the Xbox One X or a PC.

For this test, a variable refresh rate signal is sent to the TV at the native resolution and the input lag is measured as described above. This is useful for gamers who use a device which supports variable refresh rates, such as the Xbox One X or a PC.

Additional information

How input lag is measured

How to measure a television input lag
An input lag of 40ms can be seen on the television.

Input lag is not an official television specification because it depends on two varying factors: the type of source and the settings of the television. The easiest way you can measure it is by connecting a computer to the TV and displaying the same timer on both screens. You can find a timer here. Then, if you take a picture of both screens, the time difference will be your input lag. This is, however, an approximation, because your computer does not necessarily output both signals at the same time. In this example image, an input lag of 40ms (1:06:260 – 1:06:220) is indicated.

In our tests, we measure input lag using a dedicated device made just for this purpose: our input lag tool. This is a lot more accurate than the two screens method.

Why there is input lag on TVs

Input lag television workflow

The total input lag time is the addition of three parts

There are three main functions that delay the television: acquiring the source image, processing the image, and displaying it.

Acquisition of the image

The more time it takes for the TV to receive the source image, the more input lag there will be. With modern digital TVs, using an HDMI cable will allow you to minimize the acquisition time, as that will transfer from the source a digital signal that is easily accepted by the TV.

You might find a bit more lag is present with analog connections, like component or composite cables. This is because the TV needs to convert the analog signal to digital before video can be displayed, and the conversion process takes time.

Video Processing

Once the image is in a format understandable by the video processor, it will apply at least some processing to alter the image in some way. A few examples:

  • Adding overlays (like menus)
  • Adjusting the colors and brightness
  • Interpolating the picture to match the television's refresh rate
  • Scaling it (like 720p to 1080p, or 1080p to UHD)

The time this step takes is affected by the speed of the video processor and the amount of processing needed. Though you cannot control the speed of the processor, you can exercise some control over how many operations it needs to do by enabling and disabling settings. The more settings you enable, the more work the processor needs to achieve.

Some televisions have a dual core processor in them. This can help reducing the input lag if a lot of processing options are turned on.

Displaying the image

Once the television has processed the image, it is ready to be displayed on the screen. This is the step where the video processor sends the image to the screen. The screen cannot change its state instantly, and the amount of time it will take depends on the technology and components of the television. There’s, unfortunately, no way to improve or control the amount of time taken by this phase; it is a fixed amount of time for each television.

How to get the best results

Most televisions can be adjusted so that they do not have high input lag. As a general rule, try the following (which is how we set up the TVs in our tests):

  • Set the TV to Game or PC Mode
  • Disable all of the television's settings

Additionally, you can try different combinations of settings/modes/inputs until you arrive at whatever balance of features and input lag that you like.

Here are the steps necessary for getting minimal input lag on TVs from several brands:

  • Samsung: Go to Menu > System > General and set ‘Game mode’ to ‘On.’
  • Sony: Go to Menu > Picture adjustments and set ‘Picture mode’ to ‘Game.’
  • Vizio: Go to Menu > Picture > More picture and set ‘Game Low Latency’ to ‘On.’
  • LG: Go to Menu > Picture and set ‘Picture mode’ to ‘Game.’

Related settings

  • Game mode will disable some of the television's most time-consuming processing. However, gaming mode is not necessarily the setting that guarantees the lowest input lag of the television; you will sometimes need to play with the other settings to get the optimal input lag time.
  • Inside game mode, it doesn't really matter what settings you turn on.

Other notes

  • The input lag varies slightly depending on the input resolution and frame rate.
  • The input lag also varies in time. On some TVs, it even varies +/- 5ms.


Input lag is the amount of time that elapses between performing an action with a source device and seeing the result onscreen. It’s important for gaming and is particularly important for fast-paced, competitive games. Anything below 50 ms is unnoticeable to most people. We test to find the lowest amount of lag a TV can have, as well as how much lag is present when a TV has motion interpolation enabled, or when it has normal, non-gaming picture settings on.

To improve the amount of lag, the best thing to do is use ‘Game’ or ‘PC’ mode on your TV (depending on the brand). If you want to use other settings that aren’t available in game mode, you’ll, unfortunately, need to deal with a higher amount of lag.

Questions Found an error?

Let us know what is wrong in this question or in the answer.


Questions & Answers

Is the input lag that you specify for each TV model a measure of the lag in "Game Mode" or at normal settings?
The input lag measured in our tests is the lowest we could get with the TV. We tested a few modes and different setting combinations. Most of the time, this corresponds to the Game Mode.
So all these TV's are horrible compared to 5ms tv/monitors I see all around the internet? Or is the 5ms a lie?
The 5 ms that you are referring to is not the input lag, it is the response time. The input lag (15-50 ms range) is the time between the input and the display. The response time (4ms-12ms range) is the time a pixel takes to switch to another color (usually measured from gray to gray). Check our response time measurements.
Why do old CRTs not have any input lag?
They do have input lag, but it is a lot less than today's televisions. They are analog televisions: the picture information is not a series of 1s and 0s, but is a continuous signal. They don't have a video processor at all; the only processing that they do are very basic, and analogic only. The signal can go straight from the input to the cathode tube without waiting to be digitized or processed. They are a lot quicker at displaying an image.
What is "CE Dimming"? Is it a Samsung-only issue? Is there a way to turn it off?
CE Dimming is the name of Samsung's technology that dims the whole backlight of the screen while displaying a darker scene. There is no way to turn it off directly - not even from the service menu.
I just got a Sharp 70 inch LC-70TQ15U. Played it today and it didn't have game mode on and it felt sluggish. Wondering if you tested these, and if so, what they tested at. Also, would game mode improve the feel on this model?
Unfortunately, we did not test this TV, so we can't properly comment on its input lag. Game mode should reduce input lag, so try playing with that enabled and see if it improves.
I'm an arcade gamer and have a bunch of arcade systems at home that use VGA, so I'm looking at a VGA-to-HDMI converter. These converters have lag ratings; 43 ms, for example. Do these converters "replace" the lag in your tests, or is it "additional" lag? For example, if the TV is rated 30 ms and I use a converter rated at 43 ms, will the TOTAL lag be 73 ms?
It's additional lag, unfortunately, so both lag times would stack.
Could you do a video with 2 TVs side by side? One with bad input lag and the other with excellent input lag, and then load up a first person shooter then just look from left to right and make the video slow motion? That would be very informative for people to really see what input lag can do in a video game that needs quick reflexes.
We could, but I don't think it would be very useful. The difference between a high input lag TV and a low one is about 30 ms, which also correspond to 1 frame of a 30fps game. Filming it in slow motion will just show one TV delayed by 1 frame, but it won't give you an idea of the feel. Instead, we've considered adding a tool to our website that adds a variable delay to a moving object, so you could experience it. The problem with this, though, is your computer screen also has an input lag, which would skew the demonstration.
I'm looking at a 55" TV for gaming. Low input lag is a focus for me. I also want to watch some movies and TV shows on it. Right now I'm looking at the LG LB6300, Sony W800B, and Samsung H6350. The Sony doesn't interest me, due to their mode that lowers motion blur. I don't want to have a dimmer TV with noticeable flicker. Which one do you feel would be best for gaming if you ignore Sony's Impulse mode? The other issue is that the LG 6300 is $899. I've also sometimes seen it at $799 on Amazon. The other two are around $1,100. Is it really worth the extra money for the Samsung or Sony? Right now the LG looks like the best choice. The only issue I see is the medium motion blur. I really appreciate your feedback, thanks!
Yes, the upgrade from the LG to Sony/Samsung is worth it. Far better contrast ratio and uniformity. If you don't plan on using Sony's Impulse mode, it is a tougher call compared to the Samsung H6350. Picture quality wise, they are very similar, so you won't be wrong either way. The difference in terms of input lag isn't very noticeable, so go for the Samsung H6350 (it has better extra features).
My RCA 65" LCD/LED screen is so bad. I can't figure out how to reduce lag.
Try to see if it has a game mode on it. If not, disable all features.
So you are able to test Input Lag, which is great. I have read that there is no standard for testing response times in the gray-to-gray format, which many manufacturers are stating. Is there a way to test response times to standardize this figure? Also, will you be testing any OLED TVs (I know there aren't many), but just wondering. I am hoping this technology finally takes off and becomes mainstream, and would like to start seeing testing on these. Thanks.
We do an indirect test for response time through our motion blur test. Our testing rig tracks a moving image the same way an eye would, and records the visible blur that occurs while the object is in motion. The length of the trail is correlated with the TV's response time. You can see an explanation of our process here.
And yes, we do plan to test an OLED TV sometime this year.
For input lag measurements for 4k TVs are you using an 4k signal? Would input lag be different using a 1080p signal? Thanks!
Unless specifically mentioned, it is via 1080p using our Leo Bodnar tool. On some TVs though, we tested it in 4k via a computer and using the less accurate 2 screens method, and the input lag was about 10ms higher.
The laptop would be the one with the 40ms lag in the provided graphic. The TV is 40ms ahead.
You are correct. Thank you for pointing that out. We will correct the picture.
Would you still get the 65 inch JS8500 over the 7100 even though I like gaming? Seems like I get more bang for buck with the 8500. Price difference is 1699 for the 65 inch 7100 vs 2000 for the 65 inch 8500.
Basically, you get more features with the JS8500 like its wider color gamut and HDR support but those won't benefit gaming. If it is what you do the most and don't care too much about the added features, save the money and get the JU7100. You won't miss much as far as picture quality and you will get an even better input lag.
Update 9/14/2016: Now with the new HDR consoles, there is a benefit for gaming.
According to your Settings in the review for the LG EC9300, you ask us to change it to Game mode then copy your settings. Game mode doesn't have the same calibration settings as the Expert 1 picture mode you calibrated for. When you do calibrations for reviews, can you include the settings for Game mode and the usual Cinema/Expert/ISF modes as well? Also, can you provide the Game Mode calibration settings for the LG EC9300 if you have them available?
When we say to copy the settings, we just mean the ones that are available. We didn't express that as clearly as we would like, so we'll update the recommendation and try to be clearer on that point going forward.
And generally, apart from some of the settings being disabled, the settings within game mode aren't really different enough that it makes sense to give them their own section, so we likely won't be adding that. But thanks for the suggestion!
I'm not seeing any BenQ or ASUS monitor/TV products tested. Typically these "Gaming" monitors have super low input lag ratings, but I'm curious if they are actually as low as advertised? Any chance you could test a few of these? Specific models I would be interested in: BenQ XL2720Z and ASUS MX279H.
Unfortunately, we currently only test TVs, and don't have plans to expand to monitors for the time being.
Is there a workaround for game mode? If I disable all bells and whistles but leave on Movie mode to avoid CE Dimming, will I achieve a work around?
You won't get low input lag just by disabling everything. CE Dimming can also be avoided by going into PC mode.
Do you know the input lag of the Sony kdl60w630b?
No, we didn't test that TV. Based on the similar Sony W* that we tested, it is probably below 30ms.
What about a 65 inch Toshiba, whats the lag like on it? My picture seams great.
Out of Toshiba TVs, we have only reviewed the L1400U and L3400U. You can compare the input lag of two screens yourself by opening this timer on a PC connected to your Toshiba and another screen. Take a photo of both screens and the difference between the times in the image will tell you the relative input lag between them.
Will the same model but different size have different input lag? Example on display lag they have the samsung 65ks8500 at 19ms and 55ks8500 at 20ms. Also you guys have the 55ju7100 at 26ms but cnet has the 65" at 21ms and another site with it at 17ms and others 27ms.
Small differences in input lag measurements occur because of the uncertainty of the measurement and the way it is measured. There are three main factors which affect the input lag. Firstly, we measure the input lag using a box in the vertical center of the TV. LCD TVs scan refresh from top to bottom, and this means measurements taken at the top of the TV report a (slightly) lower input lag than the bottom. It also depends on the backlight level, at higher backlight levels the input lag is measured to be lower because a threshold of brightness is reached sooner. It also varies with time, multiple measurements can give different results, generally with up to 5ms difference. A different size of the same model may have a slightly different input lag, but it is generally quite similar due to the same processing. These differences are too small to be noticeable when using the TV. Even with a 120fps signal one frame difference is about 8.3ms.
Is there any chance you can test the input lag on the Samsung f8500 plasma with the HDMI input named Game (instead of PC) and the TV in game mode? I have this TV and with the HDMI input relabeled to PC, the picture quality suffers too much. I have heard that recently Samsung sent out a fix and the lowest input lag is with the HDMI named Game and Game Mode on.
Unfortunately, we do not have that TV with us anymore, so we cannot retest it.
Is G-Sync worth it? Or is it a marketing plan?
It depends on your setup. If your computer has no problem rendering a game (it generates each frame in time for the monitor), there is no visual difference. In the case of the complete opposite, where it is just too slow, it won't help, because there will still be shutters. It is really just worth it in between those scenarios, where the computer is fast enough for most frames, but some frames lag behind.
I am looking for a TV to replace my CRT TV, both for retro gaming and competitive gaming. While I know any TV will have higher input lag than a CRT, but what would you recommend for a 32", 40", or 50" TV that will mostly be used for gaming? I haven't jumped onto a W800B just due to its ~$800 pricetag. Also, Component/Composite hookups aren't necessary, as I can use HDMI passthrough for that. Thanks!
The Vizio E-series is a great gaming TV, and costs much less than the W800B. It has low input lag and minimal motion blur, as well as good contrast. The upscaling isn't great, but you should still be able to play retro games comfortably. You can find the E-series at any of those sizes.
I have older Samsung TV's, 5-+ years old. Occasionally, while watching a DVD, I have this "what was that" moment. I'd characterize it as my screen seems to "freeze" for a fraction of a second, then continue on. Most of the time, my family never even notice it. I don't know if this is input lag, 3:2 pull, refresh rate, or what, but it bugs me a lot! I want to buy a new TV, that doesn't do this. Which spec do I watch for?
On your current TV, do you have the 'Auto Motion Plus' feature enabled? That could explain why you're seeing the skipping, and disabling that feature would likely solve the problem. If this is indeed the case, to avoid any of this kind of skipping in the future, just disable the motion interpolation feature on whichever TV you get. It could also be a problem with the DVD player itself, such as it pausing when switching between layers on a dual layer disk.
Can you guys review the Vizio D series input lag before Black Friday by any chance? They have great prices and I was wondering if not a full review just input lag can be measured. Thank you.
Unfortunately, we won't have time to test that one before Black Friday. All the Vizio TVs we tested this year had a low input lag, so the D is very likely to have a good input lag too.
Does an audio receiver impact the input lag time on a TV? Does it matter if it has up conversion vs. pass-through?
It could potentially affect the input lag (in both cases, upconversion or pass-through), but it depends on the receiver. The safest way is to plug the console directly to the TV, then send back the audio from the TV to the receiver (either via HDMI ARC or optical).
The detail that you go into to measure the differences between TV sets are exemplary. Gives a wealth of info that usually only geeks would be concerned about. Now on the map, more regular folks are being exposed that more goes into the making of a set than the name on the logo below the bottom of the screen. Thinking about the updated "lag" measurements, I see that its slightly biased towards 4K viewing/playing. Would there be major hair pulling if you also published a 2k,full hd biased number? Input lag @ 4k=9.8: Input lag @ 2K=8.8 or input lag 9.8/8.8 I ask because 2k gaming is slightly more relevant even if 4k is possible. Would the additional calculations move the measurement pointer any position at all or am I just thinking it would? Is 2K HDR even possible? Thanx.
In general, we aim for our review to be able to cover as many users needs while not being so complicated that it is impossible to dissect. Because of this, we show the score for the whole box and categories of testing to give an easy to understand outlook of what to expect from the TV. Fortunately though, each individual component of the box has its own scoring, which while hidden on our main review, can be accessed via our custom rating feature. Using this tool, you can adjust one of our ratings to adapt them to your needs, or even build an entirely custom one tailored to your preferences from all of our individual review components.
I have three questions. 1) Are you using the Leo Bodnar lag tester for your input lag tests? 2) Also, is it true that a plasma TV reports a higher input lag number because of its luminescence? 3) If so, should we expect a little better "feeling/experience" from a given plasma input lag number?
1) For 2014, yes, but for 2013 we used the two screens method. 2) Yes, it is true that the tool isn't accurate for plasma. The flickering of plasma TVs messes with the tool, because the tool is using a luminosity threshold to detect the lag, so it takes a little longer for the plasma to trigger it. 3) Indeed, maybe 10ms less.
I am planning on getting the BenQ XL2420G, it has G-Sync. Does it have less input lag than the BenQ XL2420Z? I am looking for the best gaming monitor as I am a competitive gamer.
Unfortunately, we do not test PC monitors yet.
I recently purchased a Sony x810c 55" TV, and an NVidia GeForce 980 graphics card. The graphics card has both displayport and HDMI outputs. My TV does not have displayport, only HDMI. When hooking the PC to the TV for gaming, should I use a displayport to HDMI cable, or standard HDMI to HDMI? Will it make any difference in the picture and performance either way? Thanks!
It won't make a difference in the picture quality but you won't be able to do 4k @ 60Hz @ 4:4:4 with display port. The best solution is just to use a regular high speed HDMI cable.

Update 2018/01/02: some newer DisplayPort 1.2 to HDMI 2.0 adapters can do 4k @ 60Hz @ 4:4:4, like this one. Using HDMI is still preferable though if the video card supports HDMI 2.0.

Hi, I own the J4000 Samsung. You tested the input lag in game mode to only be 1ms less than outside game mode. I was just wondering if there are any benefits to playing with game mode on? Is 1 ms less input lag worth the decrease in picture quality I have read about in game mode for this TV? Thanks
No it is not really worth it.
Will you be testing the Samsung JS9500 at 4K 60hz, and 4K 60hz + HDR? I'm curious to see how the input lag is with these settings enabled.
We don't have 2015 models anymore so won't be testing this.
Hello, it looks like you removed the input lag test of the Samsung JS9500 from this list. Will this be coming back? I was looking at it this morning and now it is not listed. The input lag on this set in 4k and 4k+HDR are of interest to me as I have an opportunity to purchase this set. Thanks!
We did not remove the input lag test results for this TV. It is just that we just added the 4k and 4k+HDR input lag tests to the list of measurements that we now take and unfortunately, since we don't have this TV in our lab anymore, we could not take those measurements, so we had to let the space blank.
Hi, These exhaustive input lag measurements are really helping me decide which TV to buy! The one I'm really curious about, however, doesn't seem to be covered. For the TVs that support a 1080 @ 120hz signal, how is input lag affected relative to a 60hz signal? Thanks for the amazing work!
Our tools does not permit us to test it for the moment, but you should expect the input lag to be in the same ballpark as for 60Hz.
I currently have Samsung UN55KS8500 Tv, this has 15.9 ms response time/motion blur according to your review, I play first person shooter games on xbox one s competitively and wanted to know if it would be a noticeable difference to upgrade to the LG OLED55C7P Tv for gaming as according to your review it has 0.2 Response time and I've noticed the Lag input is pretty much the same, thanks!
The differences in motion between the two TVs isn't very significant. Since the Samsung uses a flickering backlight, its motion is still sharp even if it leaves a trail. While the C7 might be a little better, it probably isn't worth the upgrade for the motion alone.
I've read a lot of reports that the Sony X900E has really bad audio/lip sync issues. Is this something that you've ever encountered? Is there something the user can do to correct this?
We just tested, in the Game picture mode the output from the TV speakers is ~22ms slower than the video, while out of game mode (the Custom picture mode was tested) the TV speakers were ~25ms slower when a 60fps video signal was input (such as video games), and ~47ms slower when a 24fps video was input (such as a movie). All of these sync delays are below noticeable thresholds according to the sources listed here. The 'Clear Audio+' setting had no effect on audio sync lag. It's possible other sound configurations (ex passthrough to an external receiver) could have different audio sync. There's no way to change the audio sync for non-Bluetooth sources.
Can you guys consider testing 120hz @ 1440p @ 4:4:4 on TVs that accepted 120hz @ 1080p? I noticed the other day that the hdmi 2.0 spec has enough bandwidth to support it ( ) , and I think it would be a great option for those looking to use a TV as a gaming monitor. Thanks!
Thank you for your suggestion. Unfortunately, due to our limited throughput, it's difficult for us to implement new tests as reviews already require a significant amount of time. We still take note of these suggestions and might implement this in the future if more people request it, however. We do test for basic support of a 1440p resolution internally and have found that Sony TVs and TCL TVs can support a 1440p input (but no TCL TVs have a 120hz panel), but we haven't found any that support a refresh rate at that resolution higher than 60hz.
Hello, please help me find the input lag of the Sceptre 75-Inch 4K LED UTV U758CV-UMR, 2018. I know only that the response time G-to-G is 6.5 ms.
There is no way of knowing, unless someone complains about high input lag on a forum. It's unrelated to the response time. With name brands like Samsung and LG most of their models have similar input lag making guessing easier, but for no-name brands like Sceptre there is no reference to compare to. Making a wild guess, the input lag of the Sceptre may be similar to the Hisense H8C from last year, which was decent but not great.
I was wondering what the input lag is on the 2016 LG 55UH8500? I heard that after all the updates it is a lot better, I was just thinking that you guys may have retested it after the firmware updates. Please let me know, I like to game on it but I don't want to if it has high input lag.
We've heard that too, but unfortunately we don't have it any more so we can't confirm. Even as tested, the rates are low enough that you shouldn't have any issues.
How do you enable 8-bit HDR when operating at 4K @ 60Hz @ 4:4:4? By connecting my TV to my PC, I can either do 4K @ 60Hz @ 4:4:4 without HDR or I can do 4K @ 60Hz @ 4:2:2 with up to 12-bit HDR. Is this just the current limitation we have with HDMI 2.0? I assume that it is better to be at 4:4:4 than it is to lower my display to 4:2:2? Also is game mode the best option for consoles or is it necessary to set them as PC sources so that they can benefit from 4:4:4?

This is a bandwidth limitation of HDMI 2.0. Chroma 4:4:4 is generally recommended for PC use, as it helps the text appear clearer. For console gaming, most people won't even see a difference with 4:2:2 unless you are playing a very text-heavy game or using your console to browse the web. You can learn more about Chroma Subsampling here. Game mode is generally the best setting for console gaming, as it will disable most of the TV's post-processing to reduce input lag.

When you say "4k @ 60Hz + HDR" in Input Lag tests, does that mean it's using 4:4:4? I know that HDMI 2.0 doesn't support that, but perhaps some TVs accept it as unsupported resolution. Those of us who want to use a 4k TV as PC monitor might interpret that as supporting 4k @ 60Hz + HDR + 4:4:4, and buy an expensive TV only to end up disappointed because they are stuck with 8-Bit colors, even though they have high end graphics cards. A 4k TV can replace 4x 1080p monitors, and with a product like HDHomeRun Prime, one can watch cable TV (including HBO) on a window, while working on an app next to it. If it matters, the TV I am interested in is the latest Samsung QLED Q9FN. I have an Nvidia GeForce GTX 980 Ti, which supports HDMI 2.0 / DisplayPort 1.2. I don't really care about 60 Hz, I could live with 30 Hz, as long as I get 10-Bit colors with 4:4:4 subsampling. I hope that you add a new entry: "Maximum or Supported refresh rates for 4K + HDR + 4:4:4". Groups that would be interested on this are photographers and video editors who want the best color accuracy without any compression or subsampling. Thank you.

All 4k @ 60 Hz input lag tests are done with 4:2:0, and all 1080p @ 60 Hz tests are done with 4:2:2, except when the test explicitly mentions that it's done in 4:4:4. Similarly, all HDR tests are done with 10 bit color except where explicitly mentioned. I've now added this information to the (?) tooltips of each test, which should help clear up the ambiguity.

Our (4k @ 60 Hz + HDR) test is done at 4k @ 60 Hz @ 4:2:0 @ 10 bit + HDR, but we also have a (4k @ 60Hz @ 4:4:4 + 8 bit HDR) that is meant for HDR PC use. Unfortunately 4k @ 60 Hz @ 4:4:4 @ 10 bit is beyond the bandwidth of HDMI 2.0, so no current TV will accept such a signal; 4k @ 50 Hz @ 4:4:4 @ 10 bit is technically possible over HDMI 2.0 (according to Wikipedia), but we currently have no equipment that can send this. Luckily 4k @ 30 Hz @ 4:4:4 @ 10 bit (or 12 bit) has been supported on every HDR TV a full-bandwidth port we've ever tried, so you can consider that a safe bet. Because of this you can consider our HDMI 2.0 Full Bandwidth test an equivalent test for what HDR signals you can send. Also I just added "Maximum refresh rate for 4k @ 4:4:4 @ 10 bit + HDR" to our internal Test Bench Suggestions list, we'll consider it during the next test bench update.

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