LG 27UD58-B 27" 16:9 4K FreeSync IPS Monitor

Model #27UD58-B

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Power Consumption 29.5 W (EPA 7.0)
Type Built-in Power (40 W)
Input 100 - 240 VAC, 50 / 60 Hz


Pixel Pitch (H x V) 0.1554 x 0.1554 mm
Screen Size 27" (685.8 mm)
Response Time 5 ms (GtG)
Refresh Rate 60 Hz
Aspect Ratio 16:9
Resolution 3840 x 2160
Brightness 250 cd/m2
Contrast Ratio Mega
Viewing Angle (H/V) 178°/178°
Surface Treatment Anti-glare, 3H
Panel Type In-Plane Switching (IPS)
Color Gamut NTSC 72%
Color Depth 10-bit (8-bit + A-FRC)

Packaging Info

Package Weight 16.5 lb
Box Dimensions (LxWxH) 27.5 x 17.5 x 5.25"

Inputs & Outputs

Ports 2 x HDMI 2.0 1 x DisplayPort 1.2


Weight With Stand: 12.3 lb (5.58 kg)
Dimensions (W x H x D) With Stand: 24.9 x 8 x 18.2" (632.46 x 203.2 x 462.28 mm) Without Stand: 24.9 x 2.4 x 14.8" (632.46 x 60.96 x 14.8 mm)
VESA Compatibility 100 x 100 mm
Certifications and Standards TCO7.0, UL(cUL), EPEAT Gold, CB, FCC-B, CE, CCC, BSMI, KC, VCCI, EPA7.0, ErP, ROHS, REACH, Windows 10, FreeSync
Expert Reviews
18 November 2017

The LG 27UD58-B is a nice-looking 4K monitor that delivers vibrant colors, highly detailed picture and excellent gaming performance. In fact, it is one of the few monitors with Screen Split 2.0 feature and on-screen controls, making it unique among its competitors.

  • +

    Sharp UHD image detail. Strong gaming performance. AMD FreeSync supported.

  • -

    Lacks USB port(s). Doesn’t have speakers.

User Reviews
B h photo.32817553
28 July 2017

The resolution is stupendous. A great deal for the money, but the monitor is not very bright and color reproduction is limited. If you want to edit photos, you'll need a different monitor.

Ncix com.34769895
15 October 2017

I absolutely love 4k. Videos, photographs and even just reading text looks amazing. I definitely appreciate this being an IPS panel. On Windows 10, there are still a few applications that don't support hidpi, but the situation is at the point where I think most people should feel comfortable...

  • +

    - Once you go 4k, you won't want to go back!, - IPS screen., - Price. Almost all other 4k monitors at this price are TN panels., - No dead pixels., - Freesync is great if you have an AMD card., - 27" is a perfect size.

  • -

    - No USB-C ports., - Freesync not supported by NVidia., - Stand is not height adjustable.

13 August 2016

At extreme viewing angles, colours become more white. This effect isn't extreme enough to completely ruin the picture but it is noticeable. The volume/power/menu is controlled via a small stubby button on the bottom center of the monitor frame which also has joystick-style controls.

  • +

    -4K@60Hz is a MAJOR upgrade from 1080p@60Hz -IPS means picture quality is (mostly) retained even at large viewing angles (see other thoughts) -Freesync is an added bonus for AMD users

  • -

    -Controls for volume, display on/off and display adjustments are annoying to use and find, but I got used to it -Only three video display plugs: 1 DisplayPort, 2 HDMI for single/dual HDMI setups -The included DisplayPort, HDMI and monitor power cables are very short, about 1.2m(4')

5 days ago

I love this monitor! I regularly use it to switch between my PC and my MacBook. The video quality is excellent on both devices and easy to switch between the two.

Micro center.34865720
2 weeks ago

I'd been looking to update my dual monitors to a 34quot; curved UHD. Saw these babies and took the plunge. So glad I did. Can't use them at max resolution (eyes ain't what they used to be).

1 March 2017

Purchased for son, he is pleased with the picture and refresh rate. Syncs well with nVidia 1070.

  • +

    Purchased for son, he is pleased with the picture and refresh rate. Syncs well with nVidia 1070.

Micro center.34865720
1 week ago

Good monitor with a sharp screen and good price ($299). Perhaps brightness could be higher but otherwise great.

1 week ago

I bought this to replace an old computer monitor. So happy with it. The quality is amazing! The picture is so clear. Very happy I made the purchase. Worth the money

Micro center.34865720
2 weeks ago

First, I tried a 40-in 4K TV as a monitor. At 4K, I had to sit a normal distance to be able to read it. I found the display too big. Next, a 28-in 4K Samsung TN monitor, also from my local cost company.

2 weeks ago

Great piece. The Xbox 1 X looks great on this! HDR10 is wanting but you will be satisfied.

Product Highlights
  • In-Plane Switching (IPS) Technology
  • HDMI + DisplayPort Inputs
  • 3840 x 2160 Resolution
  • Dynamic Mega Contrast
  • 250 cd/m² Brightness
  • 178°/178° Viewing Angles
  • 5 ms Response Time
  • 1.07 Billion Colors
Average Expert Score
Average User Score
In The Box
  • LG 27UD58-B 27" 16:9 4K FreeSync IPS Monitor
  • Power Cable
  • HDMI Cable
  • DisplayPort Cable
  • Limited 1-Year Warranty
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