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LG UltraGear 27G640A-B 27" 1440p HDR 300 Hz Gaming Monitor

BH #LG27G640ABAQ • MFR #27G640A-B.AUSQ
28 reviews
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LG UltraGear 27G640A-B 27" 1440p HDR 300 Hz Gaming Monitor
Key Features
  • 27" 16:9 IPS Panel
  • HDMI | DisplayPort | USB-C (15W)
  • QHD (1440p) 2560 x 1440 at 300 Hz
  • FreeSync Premium | G-Sync Compatible
Catch every detail during fast-paced competitions with the LG UltraGear 27G640A-B 27" 1440p HDR 300 Hz Gaming Monitor. Designed primarily for gaming enthusiasts, this 2560 x 1440 resolution, QHD display minimizes motion blur with a 300 Hz refresh rate and 1 ms response time for liquid-smooth visuals. AMD FreeSync Premium and NVIDIA G-Sync compatibility help to eliminate screen tearing and stuttering.
More Details
Temporarily Out of Stock
Expected availability: May 29, 2026
No Store Display
$299.99
$449.99
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LG G6 Overview

Catch every detail during fast-paced competitions with the LG UltraGear 27G640A-B 27" 1440p HDR 300 Hz Gaming Monitor. Designed primarily for gaming enthusiasts, this 2560 x 1440 resolution, QHD display minimizes motion blur with a 300 Hz refresh rate and 1 ms response time for liquid-smooth visuals. AMD FreeSync Premium and NVIDIA G-Sync compatibility help to eliminate screen tearing and stuttering.

With HDR support, visuals are enhanced with realistically bright highlights and deep shadows. Connecting your DisplayPort in Alt mode compatible laptop through the USB-C port allows you to transfer video, data, and up to 15W of power over a single cable. Dual HDMI 2.1 and DisplayPort 1.4 inputs are also available. An integrated USB hub allows you to connect peripherals such as keyboards, mice, and flash drives through the monitor.

Responsive Performance
Keep up with lightning-paced game sessions with a 300 Hz overclocked refresh rate and 1 ms response time.
Smooth Gameplay
Reduce screen tearing with AMD's FreeSync Premium technology and NVIDIA G-Sync compatibility. Both enable the monitor to dynamically adjust its refresh rate to the frame rate being output by the graphics card, thereby greatly reducing screen tearing, stuttering, and other artifacts.
Rich Color
Housed inside the thin bezel frame is a 27" IPS panel that delivers cinematic visuals with 1.07 billion colors, covering 95% of the DCI-P3 gamut. HDR10 support with a 1300:1 static contrast ratio and 400 nits brightness deliver lifelike graphics.
Dynamic Action Sync
Respond to action as it happens with reduced input lag.
Black Stabilizer
Black Stabilizer is your ally to attack or defend against enemies hiding in the shadows.
FPS Counter
Display your frames per second in real-time.
Crosshair
The center-display crosshairs provide enhanced precision.
Integrated Speakers
Enjoy videos, games, and music with the built-in speaker system. The 3.5mm jack allows you to connect a pair of headphones for listening privacy.
Settle In
Adjust the height, tilt, and swivel for an optimal view. You can also view content in portrait mode by rotating the screen. The 100 x 100mm VESA mounting pattern allows you to place the display onto a swivel arm or multi-monitor stand. With wide 178° viewing angles, you can clearly see the screen from almost any position.
UPC: 195174133330

LG G6 Specs

Key Specs
Display Size
27"
Panel Type
IPS-Type LCD
Native Resolution
2560 x 1440
Maximum Brightness
400 nits / cd/m2
HDR Support
Yes: HDR10
Color Support
1.07 Billion Colors
Finish
Anti-Glare
Touchscreen
No
A/V Inputs
DisplayPort 1.4 / HDMI
A/V Outputs
3.5 mm
USB I/O
USB-C 3.2 Gen 1
Built-In Speakers
Yes: 2x 5 W
Display
Size
27"
Panel Type
IPS-Type LCD
Aspect Ratio
16:9
Native Resolution
2560 x 1440
Maximum Brightness
400 nits / cd/m2
HDR Support
Yes: HDR10
Contrast Ratio
1300:1
Response Time
1 ms (GtG)
Refresh Rate
300 Hz
Variable Refresh Technology
FreeSync Premium, G-Sync, Variable Refresh Rate (VRR)
Color Support
1.07 Billion Colors
Viewing Angle (H x V)
178 x 178°
Curved Display
No
Finish
Anti-Glare
Surface
Touchscreen
No
Connectivity
A/V Inputs
2x HDMI
1x DisplayPort 1.4
A/V Outputs
1x 1/8" / 3.5 mm
HDCP Support
Yes
USB I/O
1x USB-C 3.0 / 3.1/3.2 Gen 1 with USB PD 15 W
2x USB-C 3.0 / 3.1/3.2 Gen 1
Multi-Input Support (PIP/PBP)
No
Speaker
Built-In Speakers
Yes: 2x 5 W
Electrical
Power Consumption
Operational: 45.0 W
Eco Mode: 33.0 W
Input Power
100 to 240 VAC, 50 / 60 Hz
Power Adapter Type
External
General
Adjustments
Tilt
Rotation
Swivel
Height
VESA Mounting-Hole Pattern
100 x 100 mm
Lock Slot
Yes
Dimensions
24.2 x 21.2 x 9.4" / 613.6 x 539.1 x 239 mm (with Stand)
24.2 x 14.4 x 2.3" / 613.6 x 365.7 x 57.4 mm (without Stand)
Weight
11.9 lb / 5.4 kg (with Stand)
7.5 lb / 3.4 kg (without Stand)
Packaging Info
Package Weight
17.5 lb
Box Dimensions (LxWxH)
31 x 18 x 7"

LG G6 Reviews

excellent specs and features for the price

By George
Rated 5 out of 5
Date: 2026-04-10

easy to set up and personalize. picture is excellent. the build-in mini hub allows connecting peripherals and audio system.

Good buy on sale, dissatisfied with QC

By Explicity
Rated 4 out of 5
Date: 2026-02-07

[This review was collected as part of a promotion.] Monitor is great to get on sale but there is a little piece of debris and a small amount of dust/dirt behind a layer of the screen so be warned quality control is lacking a little bit

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