LG 24GM77 24-Inch 144Hz Gaming Monitor Review

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LG 24GM77: A Solid Gamers' Choice

We’ve stated in other gaming monitor reviews that we don’t hold these screens to quite the same color accuracy standards as professional or luxury business-class displays. LG’s 24GM77 transcends our more lax standards, delivering some of the best accuracy we’ve ever recorded.

Here we have a monitor with every feature a gamer could ask for (except one of the two variable refresh capabilities) and pro-level image quality with fantastic out-of-box color and grayscale accuracy. You even get above-average contrast levels and one of the best-implemented backlight strobes we’ve seen. The icing on the cake is that it sells for around $300, which isn't significantly more than a well-built 60Hz display at 24 inches.

Even though there is plenty of brightness available, LG chooses a minimalist approach with its Motion 240 blur-reduction feature. By only cutting output 15 percent, there is almost no visible change in the image except for less motion blur. The fact is, when it comes to backlight strobing, it doesn’t take much to see a noticeable improvement. Other gaming monitors employ a variable pulse-width feature that just isn’t necessary on the 24GM77. You truly get the best of both worlds.

We only observed two minor flaws during our evaluation. Gamma tracking is almost perfect except for that dip at the 80- and 90-percent brightness levels. Since the rest of the trace is right-on, we believe a firmware update could solve the problem.

The other issue, and it’s a minor one, is the reduction in contrast caused by Motion 240. Typically, a backlight strobe reduces output but does not affect black level. In the 24GM77’s case, the black level doubles, causing a 36-percent drop in contrast. Considering how good the blur-reduction is otherwise, we think it’s a reasonable tradeoff.

You may find yourself leaving Motion 240 off for two other reasons, though. First, you can’t use it with a 144Hz refresh rate. And second, it locks out the input lag-reducing DAS feature. Speed is the principal reason to buy a monitor like this, so ultimately we think that makes a greater impact on gaming than blur-reduction. When we turned DAS off, it almost doubled the input lag in our 144Hz test. That alone may convince many users to simply leave it on and dispense with the backlight strobe.

If you’re still holding out for FreeSync or a cheaper G-Sync screen, the 24GM77 may not be for you. But gamers shopping for fast refresh rates from a well-built monitor sporting accurate color, a solid feature-set and a low price may want to give serious consideration to the this new LG.

For its superb out-of-box accuracy, gaming-oriented features and good value, we’re giving the 24GM77 our Tom’s Hardware Editor Recommended award.

Christian Eberle
Contributing Editor

Christian Eberle is a Contributing Editor for Tom's Hardware US. He's a veteran reviewer of A/V equipment, specializing in monitors. Christian began his obsession with tech when he built his first PC in 1991, a 286 running DOS 3.0 at a blazing 12MHz. In 2006, he undertook training from the Imaging Science Foundation in video calibration and testing and thus started a passion for precise imaging that persists to this day. He is also a professional musician with a degree from the New England Conservatory as a classical bassoonist which he used to good effect as a performer with the West Point Army Band from 1987 to 2013. He enjoys watching movies and listening to high-end audio in his custom-built home theater and can be seen riding trails near his home on a race-ready ICE VTX recumbent trike. Christian enjoys the endless summer in Florida where he lives with his wife and Chihuahua and plays with orchestras around the state.

  • blackmagnum
    LG>BenQ>Asus= tough choices
  • lightsol
    so is it a 24" or 27" display?
  • Bezzell
    24" TN, 1080p? No variable refresh? No thanks.
  • chenw
    damn it, where was this monitor 6 months ago...
  • Mike Coberly
    24" TN, 1080p? No variable refresh? No thanks.
    so is it a 24" or 27" display?
    LG's website indicates that it is indeed a 24" panel, the title is incorrect in stating it is a 27"
  • alidan
  • wtfxxxgp
    Yup, this is a 24" not 27"
  • NinjaNerd56
    I got an AOC 27 inch display under $300 recently. No SYNC ability, but a really nice device that's excellent with the games I play.

    It's GAME mode is good, and I have done zero adjustment beyond that. If it lasts 2-3 years, then I can 'upgrade' at a much cheaper price to whatever sync de jour display I want.
  • JeanLuc
    For a gaming monitor to be released these days that does not to come with Gsync or Freesync capability is very short sighted by LG. Would the inclusion of a Freesync enabled 1.2a displayport really have delayed or added considerable costs to this monitor, LG?
  • Marcus52
    This article - seriously? You can't even get the size of the monitor right. And the price isn't anything special for a 24" 144 Hz TN panel, Asus has had one in that price range (under $300) for years now. In my mind these things make the entire article suspect.