TurboVS
LG 27U421A-B 27" specifications and in-depth review

LG 27U421A-B 27"

Manufacturer: LG

The LG 27U421A-B 27″ is a versatile monitor designed for various tasks, offering a 27-inch LED-backlit VA display. With a 100Hz refresh rate, it delivers smooth visuals for both work and entertainment.

This monitor features a 1920 x 1080 resolution and has a pixel density of 81 ppi. It also supports a wide 178º viewing angle horizontally and vertically. The monitor comes with HDMI 2.0, USB Type-C, and a 3.5mm audio jack for flexible connectivity, while its power consumption is 15W during operation.

Pros
  • Supports VESA mount for flexible installation options.
  • Has a wide 178º horizontal and vertical viewing angle for consistent image quality from various perspectives.
  • Supports color calibration for improved display accuracy.
Cons
  • Lacks adaptive synchronization, which may affect performance in fast-paced activities like gaming.
  • Does not include built-in speakers, requiring external audio solutions.
  • No swivel stand, limiting adjustability for optimal viewing angles.
  • Does not support features like PiP, Dolby Digital, or DTS Surround for enhanced multimedia experiences.
  • No touch screen functionality, which may limit interactivity.
Who is this for?

The LG 27U421A-B 27″ monitor is well-suited for users who prioritize wide viewing angles and color calibration for tasks like office work, design, and casual media consumption. Its 178º viewing angles and color accuracy support make it a good option for environments where precise color reproduction and clear visibility from different positions are important.

Who is this NOT for?

This monitor is not ideal for gamers or users seeking high-end multimedia features, as it lacks adaptive synchronization and Dolby Digital support, which may affect performance and audio experience. Additionally, its lack of a swivel stand and absence of built-in speakers make it less versatile for gaming or immersive media setups.

Display:

Display type LED-backlit, LCD, VA
response time 5 ms
screen size 27"
resolution 1920 x 1080 px
pixel density 81 ppi
Adaptive synchronization None
has anti-glare coating ✕
refresh rate 100Hz
maximum horizontal viewing angle 178º
maximum vertical viewing angle 178º
has a matte panel ✕
has a glossy panel ✓
has a touch screen ✕

The LG 27U421A-B 27″ monitor features a 27-inch LED-backlit VA display with a 1920 x 1080 resolution for clear visuals. Its 100Hz refresh rate ensures smooth motion, and with a wide 178º horizontal and vertical viewing angle, the display provides consistent image quality from multiple perspectives. While it does not have an anti-glare coating or a matte panel, it does feature a glossy surface for vibrant colors. The response time is 5 ms, making it suitable for general use, though it lacks adaptive synchronization technology and touch capabilities.

General info:

Type Curved, Standard
release date January 2025
supports total tilt ✓
Has a swivel stand ✕
Supports VESA mount ✓
height 360 mm
width 609 mm
thickness 43 mm
weight 3720 g
supports portrait mode ✓
volume 9427.32 cm³

The LG 27U421A-B 27″ monitor features a curved, standard design with a height of 360 mm, width of 609 mm, and thickness of 43 mm. It weighs 3720 g and has a VESA mount option for flexible installation. This monitor supports portrait mode, offering versatility in display orientation, but does not include a swivel stand. It also supports total tilt, allowing for a customizable viewing angle.

Colors:

brightness (typical) 250 nits
supports color calibration ✓
display colors 16.7 million
contrast ratio 3000:1

The LG 27U421A-B 27″ monitor offers a typical brightness of 250 nits and supports color calibration for enhanced accuracy. It displays up to 16.7 million colors, ensuring vibrant and detailed visuals. With a 3000:1 contrast ratio, it delivers sharp differentiation between light and dark areas, improving image clarity.

Connectivity:

HDMI ports 1
supports Thunderbolt ✕
DisplayPort outputs 0
has a socket for a 3.5 mm audio jack ✓
has a DVI connector ✕
USB ports 1
Has USB Type-C ✓
HDMI version HDMI 2.0
supports Ethernet ✕
supports Wi-Fi ✕
has AirPlay ✕
mini DisplayPort outputs 0
has a VGA connector ✕

The LG 27U421A-B 27″ monitor offers 1 HDMI port with HDMI 2.0 support and 1 USB Type-C port for versatile connectivity. It also includes a 3.5mm audio jack for audio output. However, it does not feature DisplayPort, Thunderbolt, or VGA connectors, and lacks Ethernet, Wi-Fi, or AirPlay support.

Power:

operating power consumption 15W
standby power consumption 0.5W

The LG 27U421A-B 27″ monitor has an operating power consumption of 15W and a standby power consumption of 0.5W, making it efficient for daily use and energy-saving when not in active use.

Features:

has PiP ✕
has stereo speakers ✕
has built-in smart TV ✕
has a remote control ✕
supports Dolby Digital ✕
supports Dolby Digital Plus ✕
has DTS Surround ✕
has an ambient light sensor ✕
has a front camera ✕

The LG 27U421A-B 27″ monitor does not include features such as PiP (Picture-in-Picture), stereo speakers, or a built-in smart TV. It also lacks a remote control, Dolby Digital and Dolby Digital Plus support, and DTS Surround. Additionally, there is no ambient light sensor or front camera for enhanced functionality.

Final Verdict

The LG 27U421A-B 27″ monitor offers solid performance for everyday tasks, with notable strengths such as its 178º wide viewing angles and color calibration support. It is a good fit for users who need a reliable display for office work and casual media consumption. However, it may not meet the needs of gamers or those seeking more immersive features like adaptive synchronization or built-in audio. Overall, this monitor is a practical choice for general use, but those with more demanding multimedia needs may find it lacking in certain areas.