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A Little About the Input Lag of the LG W2363D 120Hz LCD Monitor

June 27th, 2010 · 24 Comments · Other S3D Tech

I have been testing for some time already the 23-inch LG W2363D 120Hz LCD monitor, of course focusing mostly on its performance in stereo 3D mode. A more detailed review of the display is coming soon, but meanwhile I’m going to share with you some important information regarding the input lag that the LG has or actually doesn’t have. The input lag of a display does not directly influence the quality of the image you get or create issues when playing in stereo 3D mode, but the presence of input lag is not desired by gamers, because it leads to slower reaction time and thus may lead to worse results in more competitive and especially multiplayer games.

Unfortunately I was not able to get a Acer GD245HQ/GD235HZ monitor to compare directly with the LG W2363D, so I did the comparison with the Samsung 2233RZ instead, but as I’ve already compared the Samsung 2233RZ and ViewSonic VX2268WM and found they both have the same input lag, and that input lag is almost identical to that of a good CRT display (meaning input lag of less than 1 ms if there is any at all). On the other hand the Acer GD245HQ/GD235HZ monitor has between zero to about 15-16 ms input lag delay compared to the ViewSonic and all this can help a lot in judging the results I got from the LG below, so pay good attention…

The LG W2363D monitor has a special mode called THRU Mode that has the sole purpose to eliminate any input lag when activated, but before trying if that mode really works and if it does – how well it performs I’ve tried the input lag without it being enabled. The minimum input lag I’ve managed to get with the THRU Mode disabled was 9 milliseconds delay as compared to the Samsung monitor.

And after taking a long series of photos with an exposure time of 1/1000th of a second and high ISO setting the maximum input lag I was able to measure was about 18 seconds. Have in mind that these tests are performed with the use of a DVI splitter cable instead of connecting the two monitors to the two outputs of the video card and using a clone mode as my tests confirm that using the clone mode does not provide accurate results as compared to using a single monitor output with a splitter cable. So far these results can be considered worse than what I’ve managed to get from the Acer, so lets see how the THRU Mode on the LG works and will it be able to do some wonders in getting rid of the input lag…

Enabling the THRU Mode on the LG completely eliminates the the input lag on the LG, bringing it down to exactly the same results the Samsung is showing. So the THRU Mode on the LG does exactly what it is supposed to do – eliminate the input lag completely, but you need to enable that mode in order to have no input lag as some people will most likely forget to do so every time they need it. So you should enable it right from the start and forget about switching it off again…

The good news is that whenever you switch to 3D mode the THRU Mode is automatically being enabled and you are unable to switch it off until you are back to normal mode again, so there is no input lag while playing in stereo 3D mode and that is a good advantage for the LG. And there is another advantage of the LG that you’ve probably already noticed in the photos above and that is the higher brightness of the LG (400 cd/m2) compared to that of the Samsung (300 cd/m2).

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24 responses so far ↓

  • 1 Nafi // Jun 27, 2010 at 23:33

    So out of the LG, Samsung, Acer and ViewSonic, which one did you like best?

  • 2 Bloody // Jun 27, 2010 at 23:48

    It is hard to say, but I still haven’t found a good enough alternative to replace my first Samsung… the Acer and LG are better, but not that much to be enough for me to upgrade. Although if you are buying a first 3D-capable LCD monitor it should be one of them, or maybe the Alienware, but I haven’t tested that yet.

  • 3 Nafi // Jun 28, 2010 at 00:20

    I actually have the Acer monitor and I am very happy with it. =)

  • 4 DanDare // Jun 28, 2010 at 03:19

    …about the sound on the LG… good\bad?

  • 5 mihabolil // Jun 28, 2010 at 23:41

    Ok, between ACER and LG, which one is better?

  • 6 Bloody // Jun 29, 2010 at 00:12

    There is not clear winner, as each of them has some advantages over the other, so it depends if you are getting a display mostly for gaming (LG), or you’ll also need to use it more in 2D too (Acer).

  • 7 chris // Jun 29, 2010 at 07:03

    Great work!
    On which resolution did you make the tests?

  • 8 Bloody // Jun 29, 2010 at 09:36

    The resolution is 1680×1050, the Samsung can’t take more. But if the LG does not have any input lag on non-native resolution, there shouldn’t be any on its native Full HD resolution too ;)

  • 9 Espen // Jun 30, 2010 at 04:14

    Ive compared the Alienware aw2310 too the Syncmaster now, it cant even be compared. Damn aw2310 is good screen for 3d and gaming.

  • 10 Tgaud // Jul 1, 2010 at 18:25

    Do you have the edge size of the Monitor ?
    A lot of player are seduced by the 3D vision surround solution
    (3D stereoscopic with three screen)

    And for this, the size of the edges is a very important criteria.

    moreover I see that you compare 22′ monitor with 24′.. it’s not fair.

  • 11 Bloody // Jul 1, 2010 at 19:04

    The LG is probably not the best choice of 3D Vision Surround, because of the side edges not being very slim and because of the bigger round “thing” at the bottom of the screen… especially if you wish to overlap the bezels of the monitors.

  • 12 Tgaud // Jul 1, 2010 at 19:15

    Well i don’t really care of the bottom part. cuz most ppl want 1×3 solution and not 2×3 solution.

    (3 monitor is enough)

    But do you have news of any slim edge 120hz monitor ?

  • 13 Bloody // Jul 1, 2010 at 19:27

    I’m not talking about 2×3, it is a problem even when building 1×3 monitor setups… it makes the monitor thicker and thus harder to closely match the two side displays to the center one with overlapping bezels.

    No info on any slim edge solution coming out yet…

  • 14 EvilRyu // Aug 15, 2010 at 01:28

    Hi, can you tell me if the thru mode can be enabled on all resolutions and both HDMI and DVI?


  • 15 Bloody // Aug 15, 2010 at 06:47

    Haven’t checked specifically, but it should be available in all resolutions. And in 3D mode it is forced by default with the user not able to disable it.

  • 16 Michael // Sep 16, 2010 at 18:30

    Unfortunately, it’s quite the opposite: in 3D mode THRU mode is DISABLED. In other words, this monitor is useless if you are interested in really low input lag – measured with a photodiode, the LG is about 10 ms slower at 120 Hz than a ViewSonic VX2265wm.

  • 17 lololol // Dec 23, 2010 at 17:35

    I’m only concerned about HDMI. For HDMI mode, is there still zero lag with Thru Mode enabled???

  • 18 robert // Apr 30, 2011 at 00:24

    wich is the best monitor for input lag?

  • 19 Pat Test // Jul 7, 2011 at 14:50

    I decided to get the Acer monitor over the LG and I love it. It’s perfect for gaming and general browsing.

  • 20 Ken // Sep 1, 2011 at 17:01

    Michael (four comments above) is correct when he says in 3D mode THRU mode is DISABLED. So this whole article is pointless if we’re discussing 3D games, although thru mode might be useful for games viewed in 2D. Here’s a quote from my LG W2363D manual: “When operating 3D screen, THRU MODE is inactivated”.

  • 21 EB // Oct 2, 2011 at 02:50

    I own the Acer and the LG. My only reason for buying 120hz is for 2D performance. The LG is amazing. I will go to my grave with this monitor if they don’t keep making 120hz with the thru-mode. It makes me sick to think of this exact combo of tech not to exist in the future…

    LG please market this in 27″ without the 3D gimmick so gamers will look twice at what is the best thing since sliced bread.


  • 22 extreem // Jul 8, 2012 at 15:41

    It seems like the Thru mode doesn´t really do anything for me…

    A friend of mine has the samsung 2233RZ and in Quakelive it performs a lot better. We have the same ingame config (except for the resolution). Both at 120hz (and ofcourse i have Thru mode enabled).

    Anyone have any idea’s?

  • 23 Geko // Jul 30, 2012 at 00:05

    You must use native monitor resolution (in all lcd/led/plasma) because they need to do an aditional process for “making fit” the lower resolutions. And in QL preferences you most disable vertical sync. I play QL too and I still have a Lacie Electron 22 Blue CRT, I wanna change it for a LCD because of LAN Partys, and I can’t get one of these in my country, that sucks!

  • 24 Rick // Jul 18, 2016 at 23:27

    I know this is cold in the grave now, but I still have my W2363D.

    I have to say that with an nvidia, everything can be scaled on the GPU anyway. So the monitor is permanently in 1920×1080 mode, regardless of resolution. So the thru mode is always on.

    Also, the monitor was very good for customised resolutions and frequencies from nvidia control panel. Downsampling too, until we go the awesome DSR from driver level.

    You can even get 120hz 1920×1080 through HDMI with custom timings from nvidia control panel

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