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LG UltraGear 27G640A-B 27" specifications and in-depth review

LG UltraGear 27G640A-B 27"

Manufacturer: LG

The LG UltraGear 27G640A-B 27″ is a gaming monitor designed to offer high performance with its sleek 27-inch display. It features a 1 ms response time and a 300Hz refresh rate, making it a solid choice for competitive gaming enthusiasts who demand fast and smooth visuals.

With a 2560 x 1440 px resolution, the monitor ensures sharp image quality. It supports both Nvidia G-Sync Compatible and AMD FreeSync Premium for adaptive synchronization. The screen also offers a wide viewing angle of 178° horizontally and vertically. Additional features include a glossy panel, stereo speakers with 2 x 5W output, and versatile connectivity options with HDMI 2.1 and DisplayPort 1.4.

Pros
  • The monitor supports both Nvidia G-Sync Compatible and AMD FreeSync Premium for smooth gaming experiences with minimal screen tearing.
  • With a 300Hz refresh rate and 1 ms response time, the display is well-suited for fast-paced gaming, offering smooth motion and low latency.
  • It has a VESA mount compatibility, allowing for flexible installation and positioning options.
  • The 178° horizontal and vertical viewing angles ensure that the image remains clear and accurate from a variety of positions.
  • The inclusion of stereo speakers with 2 x 5W output provides basic audio functionality without needing external speakers.
Cons
  • The monitor lacks anti-glare coating and a matte panel, which may cause reflections in bright environments and reduce visibility.
  • It does not support advanced audio features like Dolby Digital, DTS Surround, or Dolby Digital Plus, limiting the audio experience.
  • There is no built-in smart TV functionality, limiting its versatility for non-gaming uses.
  • The monitor does not support Wi-Fi, Ethernet, or Thunderbolt, limiting its connectivity options for certain setups.
  • It lacks a remote control, requiring manual adjustment for settings instead of convenient remote access.
Who is this for?

The LG UltraGear 27G640A-B 27″ is ideal for gamers who prioritize fast, smooth gameplay. With its 300Hz refresh rate and 1 ms response time, it excels in high-speed, competitive gaming environments where motion clarity and responsiveness are critical. The monitor is also great for users who value wide viewing angles, as it offers 178° horizontal and vertical viewing angles, ensuring an optimal display from almost any position. Its VESA mount compatibility adds flexibility for different setups and installations.

Who is this NOT for?

This monitor may not be the best choice for users looking for a versatile all-in-one display. Its lack of features like built-in smart TV functionality or Wi-Fi support limits its use beyond gaming. Additionally, the absence of anti-glare coating or a matte panel might be a problem in bright environments where screen reflections could interfere with viewing. It also lacks advanced audio features like Dolby Digital or DTS Surround, which may not meet the expectations of those seeking immersive sound quality.

Display:

Display type LED-backlit, LCD, IPS
response time 1 ms
screen size 27"
resolution 2560 x 1440 px
pixel density 108 ppi
Adaptive synchronization Nvidia G-Sync Compatible, AMD FreeSync Premium
has anti-glare coating ✕
refresh rate 300Hz
maximum horizontal viewing angle 178º
maximum vertical viewing angle 178º
has a matte panel ✕
has a glossy panel ✓
has a touch screen ✕

The LG UltraGear 27G640A-B 27″ features an LED-backlit IPS LCD display with a resolution of 2560 x 1440 px and a 300Hz refresh rate, offering smooth and sharp visuals. The monitor has a 1 ms response time for minimal motion blur, making it ideal for fast-paced gaming. Its viewing angles are impressive with a maximum of 178° both horizontally and vertically, while the glossy panel adds to the visual appeal. However, it does not feature anti-glare coating or a matte panel, which may affect visibility in bright environments.

General info:

Type Gaming
release date August 2025
supports total tilt ✓
Has a swivel stand ✓
Supports VESA mount ✓
height 365 mm
width 613 mm
thickness 57 mm
weight 5470 g
supports portrait mode ✓
volume 12753.465 cm³

The LG UltraGear 27G640A-B 27″ gaming monitor offers several adjustable features for enhanced ergonomics. It supports total tilt and swivel, allowing users to adjust the screen for optimal viewing. Additionally, the monitor is VESA mount compatible for flexible installation. With a height of 365 mm, a width of 613 mm, and a thickness of 57 mm, it has a solid, space-efficient design. The monitor also supports portrait mode, making it versatile for different setups. It weighs 5470 g and has a volume of 12753.465 cm³, which adds to its sturdy build.

Colors:

brightness (typical) 400 nits
supports color calibration ✓
display colors 1070 million
contrast ratio 1300:1

The LG UltraGear 27G640A-B 27″ offers a vibrant visual experience with a typical brightness of 400 nits and a contrast ratio of 1300:1, ensuring clear and dynamic images. It supports color calibration for accurate color reproduction and can display up to 1070 million colors, enhancing the overall viewing experience for gaming and media consumption.

Connectivity:

HDMI ports 2
supports Thunderbolt ✕
DisplayPort outputs 1
DisplayPort version DisplayPort 1.4
has a socket for a 3.5 mm audio jack ✓
has a DVI connector ✕
USB ports 3
HDMI version HDMI 2.1
supports Ethernet ✕
supports Wi-Fi ✕
has AirPlay ✕
mini DisplayPort outputs 0
has a VGA connector ✕

The LG UltraGear 27G640A-B 27″ offers multiple connectivity options, including 2 HDMI 2.1 ports and 1 DisplayPort 1.4 output for high-quality video input. It also includes 3 USB ports and a 3.5 mm audio jack for audio output. However, it does not support Thunderbolt, Ethernet, Wi-Fi, AirPlay, or a DVI connector, and lacks any mini DisplayPort or VGA connectors.

Power:

Features:

has PiP ✕
has stereo speakers ✓
has built-in smart TV ✕
audio output power 2 x 5W
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 UltraGear 27G640A-B 27″ includes stereo speakers with 2 x 5W audio output, offering basic audio capabilities. It does not support advanced features like PiP, Dolby Digital, DTS Surround, or a front camera. Additionally, the monitor lacks built-in smart TV functionality, a remote control, an ambient light sensor, or support for Dolby Digital Plus.

Final Verdict

The LG UltraGear 27G640A-B 27″ is a high-performance gaming monitor designed for serious gamers who demand speed and clarity. With its 300Hz refresh rate and 1 ms response time, it delivers exceptional responsiveness for fast-paced gameplay. The wide 178° viewing angles and VESA mount compatibility add flexibility to its design. However, its lack of features like built-in smart TV functionality or advanced audio options may limit its appeal for general multimedia use. Overall, this monitor excels in gaming environments but may not be the best fit for users looking for an all-in-one display solution.