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LG UltraWide 34" WQHD 1440p 144Hz Curved Monitor

BH #LG34U640BBA • MFR #34U640B-B.AUS
25 reviews
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LG UltraWide 34" WQHD 1440p 144Hz Curved Monitor
Key Features
  • 34" 21:9 VA Panel
  • HDMI | DisplayPort | USB-C
  • WQHD 3440 x 1440 at 144 Hz
  • FreeSync Premium Compatible
Boost productivity and immersion at your desk with the LG UltraWide 34" WQHD 1440p 144Hz Curved Monitor. This monitor boasts an ultrawide resolution of 3440 x 1440 and a commendable refresh rate of 144 Hz. An 1800R curve and 178° viewing angles help you stay engrossed in your workflow. Two HDMI 2.0, one DisplayPort 1.4, and one USB-C port provide ample connectivity. A 3.5 mm headphone jack allows for discrete work or gaming. The 300 nits VA panel is equipped with a 5 ms response time, a 4000:1 contrast ratio, and covers 99% of the sRGB color gamut, supporting 1.07 billion colors with HDR10.
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$349.99
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LG 34U640B-B Overview

Boost productivity and immersion at your desk with the LG UltraWide 34" WQHD 1440p 144Hz Curved Monitor. This monitor boasts an ultrawide resolution of 3440 x 1440 and a commendable refresh rate of 144 Hz. An 1800R curve and 178° viewing angles help you stay engrossed in your workflow. Two HDMI 2.0, one DisplayPort 1.4, and one USB-C port provide ample connectivity. A 3.5 mm headphone jack allows for discrete work or gaming. The 300 nits VA panel is equipped with a 5 ms response time, a 4000:1 contrast ratio, and covers 99% of the sRGB color gamut, supporting 1.07 billion colors with HDR10.
Ultrawide Display
The WQHD (3440×1440) display gives you room to work across multiple apps at once, reducing window switching and improving focus. The subtle 1800R curve follows your natural line of sight to keep long sessions comfortable, while the narrow-bezel design keeps the screen presentation clean and immersive.
Versatile Connectivity
Along with one DisplayPort and two HDMI inputs, the UltraWide features a USB-C port that is DP Alt Mode- and Power Delivery-capable. With just one USB-C cable, this allows you to display content, transmit data, and charge up to 65W.
Dual Device Ready
With the integrated KVM switch, you can control two PCs with a single monitor, keyboard, and mouse. Easily switch between devices and move files between systems with a simple drag-and-drop to streamline your setup and reduce desk clutter without extra hardware.
FreeSync Premium Technology
Powered by a FreeSync Premium certification, this monitor delivers tear-free, ultra-smooth visuals with low latency. As such, fast motion stays controlled, responsive, and visually precise during gameplay.
Reader Mode
Reader Mode reduces blue light, displaying warmer hues and tones ideal for reading documents or browsing for extended periods.
LG Switch App
The Switch app transforms your screen into a multitasking hub for work, gaming, and streaming. Effortlessly split the screen into up to six sections, customize display layouts, or launch video calls with a single hotkey.
UPC: 195174147368

LG 34U640B-B Specs

Key Specs
Display Size
34"
Panel Type
VA LCD
Native Resolution
3440 x 1440
Maximum Brightness
300 nits / cd/m2
HDR Support
Yes: HDR10
Color Support
1.07 Billion Colors
Color Gamut
99% sRGB
Touchscreen
No
A/V Inputs
DisplayPort 1.4 / HDMI 2.0
A/V Outputs
3.5 mm
USB I/O
USB-C 3.2 Gen 1
Built-In Speakers
No
Display
Size
34"
Panel Type
VA LCD
Aspect Ratio
21:9
Native Resolution
3440 x 1440
Maximum Brightness
300 nits / cd/m2
HDR Support
Yes: HDR10
Contrast Ratio
4000:1
Response Time
5 ms (GtG)
Refresh Rate
144 Hz
Variable Refresh Technology
FreeSync Premium
Color Support
1.07 Billion Colors
Color Gamut
99% sRGB
Viewing Angle (H x V)
178 x 178°
Curved Display
Yes: 1800R
Surface
Touchscreen
No
Connectivity
A/V Inputs
2x HDMI 2.0
1x DisplayPort 1.4
A/V Outputs
1x 1/8" / 3.5 mm (Headphone)
HDCP Support
Yes
USB I/O
1x USB-C 3.0 / 3.1/3.2 Gen 1 with DP Alt Mode, USB PD 65 W
Multi-Input Support (PIP/PBP)
Yes: Picture-in-Picture (PIP), Picture-by-Picture (PBP)
Speaker
Built-In Speakers
No
Electrical
Power Consumption
Standby: < 0.5 W
Input Power
100 to 240 VAC, 50 / 60 Hz
Power Adapter Type
External
General
Adjustments
Tilt
Height
VESA Mounting-Hole Pattern
100 x 100 mm
Lock Slot
No
Dimensions
31.9 x 18.3 x 8.7" / 81 x 46.5 x 22.1 cm (with Stand)
31.9 x 14.1 x 3.6" / 81 x 35.8 x 9.1 cm (without Stand)
Weight
17 lb / 7.7 kg (with Stand)
12.3 lb / 5.6 kg (without Stand)
Packaging Info
Package Weight
22.5 lb
Box Dimensions (LxWxH)
39 x 18.75 x 7"

LG 34U640B-B Reviews

Excellent monitor.

By Laila S
Rated 4 out of 5
Date: 2026-08-13

[This review was collected as part of a promotion.] This is an excellent monitor. I use it for my creative work, to edit my videos and for everyday emails and such. I have been using it for a couple of weeks, and I haven't had any issues with it. The quality is great. There isn't a lot of lagging when I'm editing my videos. I highly recommend it.Review submitted as part of a program that provides a purchase discount.

LG UltraWide Monitor remote working setup

By Briane J
Rated 5 out of 5
Date: 2026-08-11

[This review was collected as part of a promotion.] I've been using this UltraWide monitor as my primary display for work, and it's made a noticeable difference in my daily routine. I spend a lot of time editing videos, organizing files, and working with multiple windows open at once, so I wanted a monitor that would give me more screen space without needing a dual-monitor setup. The setup process was quick and straightforward, and I was impressed by how clean and modern the monitor looked once it was on my desk. The display is sharp, colors look vibrant, and the extra width makes multitasking much more comfortable because I can keep everything I need visible at the same time. After using it consistently, it's become an essential part of my workspace, and I'd recommend it to anyone looking for a larger display that helps improve productivity and makes everyday computer use more enjoyable. Review submitted as part of a program that provides a purchase discount.

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