LG 27UD59 review: successor of inexpensive 4K monitor tested

Good and inexpensive choice even less expensive

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Gaming: response time and input lag

The LG 27UD59 is not a gaming monitor, which is why we do not go into that much detail here. Below we show the rise and fall times separately, as well as the combined values. We also show the maximum and optimal overdrive results. The optimal overdrive values are combined rise / fall response times of 16 ms or lower with an overshoot that is as low as possible. In other words: a response time of 4 ms and an overshoot of 60% is in our opinion worse than a response time of 15 ms combined with an overshoot of 5%. After all, overshoot and undershoot result in annoying artefacts around moving parts of the image, mainly with contrast-rich gradients you can see thick white or black edges. In our opinion, these are worse than light ghosting.

While the 27UD59 appears to be an improvement over its predecessor in many ways, it is less well adjusted for gaming in terms of response times than that model. Even with maximum overdrive, it is the slowest model in this test field, although it is still fast enough to display 60 frames per second without ghosting. However, there is a bit more overshoot than what we saw with the predecessor, although 9 percent is not really an issue.

Response time, standard setting

  • 20-80
  • 80-20
  • 20-80-20
  • 0-100
  • 100-0
  • 0-100-0

Response time, maximum overdrive

  • 20-80
  • 80-20
  • 20-80-20
  • 0-100
  • 100-0
  • 0-100-0

  • Overshoot
  • Undershoot

Response time, optimal overdrive

  • 20-80
  • 80-20
  • 20-80-20
  • 0-100
  • 100-0
  • 0-100-0

  • Overshoot
  • Undershoot

Input lag

We see no visible input lag in any of the input lag tests. 

  • Above
  • Below
  • Middle
  • Versus CRT


Compare

two products discussed in this review

  Product Lowest price

LG 27UD59-B

27 inch, 3840x2160, 163 ppi, IPS, AMD FreeSync, 60 Hz, HDMI input, DisplayPort input, 5 ms, 250 cd/m², 1000 : 1

Specifications Test results Reviews

LG 27UD59-W

27 inch, 3840x2160, 163 ppi, IPS, AMD FreeSync, HDMI input, DisplayPort input, 5 ms, 250 cd/m², 1000 : 1

Specifications

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