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LG 34U640B-B 34" 144Hz WQHD 5ms AMD FreeSync Premium UltraWide VA Gaming Monitor

SKU AD00740 Model# 34U640B-B
LG 34U640B-B 34" 144Hz WQHD 5ms AMD FreeSync Premium UltraWide VA Gaming Monitor

LG 34U640B-B 34" 144Hz WQHD 5ms AMD FreeSync Premium UltraWide VA Gaming Monitor

Description
SKU AD00740 Model# 34U640B-B
• LG 34U640B-B 34" 144Hz WQHD 5ms AMD FreeSync Premium UltraWide VA Gaming Monitor Colour: Negro
• Panel Type: Vertical Alignment (VA)
• Resolution: 3440 x 1440
• Aspect Ratio: 21:9
• Curvature: 1800R
• Response Time: 5ms
• Brightness (typ): 300 cd/m²
• Contrast Ratio (typ): 4,000:1
• Displayable Colours: 1.07 Billion Colors
• I/O: USB, HDMI 2.0, DisplayPort
• Stand Adjustments: Tilt, Height
• VESA Mount: 100x100
• Features: Super Resolution+, HDR10, Flicker Free, Dynamic Action Sync
• 34U640B-B
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$639.00
Sale price  $639.00
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Ships within 8 - 24 days

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$639.00
Sale price  $639.00
Awaiting stock

In stock with supplier

Ships within 8 - 24 days

Accepted payment methods

  • Visa
  • Mastercard
  • American Express
  • PayPal
  • UnionPay
  • Alipay
  • WeChat Pay
  • LatitudePay
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Description
• LG 34U640B-B 34" 144Hz WQHD 5ms AMD FreeSync Premium UltraWide VA Gaming Monitor Colour: Negro
• Panel Type: Vertical Alignment (VA)
• Resolution: 3440 x 1440
• Aspect Ratio: 21:9
• Curvature: 1800R
• Response Time: 5ms
• Brightness (typ): 300 cd/m²
• Contrast Ratio (typ): 4,000:1
• Displayable Colours: 1.07 Billion Colors
• I/O: USB, HDMI 2.0, DisplayPort
• Stand Adjustments: Tilt, Height
• VESA Mount: 100x100
• Features: Super Resolution+, HDR10, Flicker Free, Dynamic Action Sync
• 34U640B-B
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Frequently bought with

Widescreen Workflows Made Effortless

Upgrade your desktop setup with a curved 34" 21:9 UltraWide™ WQHD display that lets you see more at once. Enjoy smooth 144Hz visuals, vibrant HDR color, and a sleek, narrow-bezel design-perfect for on-screen multitasking, creativity, and everyday comfort.

Curved 21:9 UltraWide™ WQHD Display

The 21:9 UltraWide™ 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 for comfortable long sessions, while the sleek design keeps your workspace open, clean, and distraction-free.

Up to 99% sRGB Color Coverage

Up to 99% sRGB coverage and HDR10 support deliver balanced color and smooth tonal transitions across documents, media, and HDR content.

USB Type-C: All-in-One Connectivity

USB-C connectivity simplifies your setup by handling display, data, and up to 65W laptop charging through a single cable. With DisplayPort and HDMI and two USB ports also on board, it's easy to connect laptops and peripherals for a cleaner desk and smoother workflows.

Dual Controller (KVM Switch)

Control two PCs with a single monitor, keyboard, and mouse. Easily switch between devices and move files between systems with simple drag-and-drop-streamlining your setup and reducing desk clutter without extra hardware.

Customize Your Screen View with the Switch App

The Switch app transforms your screen into a multitasking hub for work, gaming, and streaming. Effortlessly split the screen into up to 6 sections, customize display layouts, or launch video calls with a single hotkey.

AMD FreeSync Premium™ Technology

Powered by AMD FreeSync Premium™ certification, this monitor delivers tear-free, ultra-smooth visuals with low latency-so fast motion stays controlled, responsive, and visually precise during gameplay.

144Hz Keeps Motion Super Smooth

With a 144Hz refresh rate and 5ms response time, this UltraWide™ keeps visuals smooth and clear. Perfect for video calls, streaming, and gaming.

Reader Mode Brings Comfort to Reading

Reader Mode reduces blue light displaying warmer hues and tones ideal for reading documents or browsing for extended periods.

Space-Saving Stand with Adjustable Screen

UltraWide's slim stand with a square base helps keep your workspace clean and organized while saving valuable desk space. The 3-side virtually borderless screen with tilt and height adjustability makes it easy to dial in a comfortable viewing position, and one-click mounting allows for quick, and easy setup.

  • 34" viewable screen size ensures sharp, vibrant visuals for a consistently engaging and responsive viewing experience
  • 5 ms response time enhances responsiveness and visual sharpness, ideal for action-packed games, sports, and dynamic media
  • AMD FreeSync Premium tearing prevention technology provides a distortion-free and reliable display by reducing screen tearing artifacts
  • 21:9 aspect ratio ensures that you easily view CinemaScope video content without letterboxing or distortion across the entire screen
  • Enjoy vibrant colours and crisp visuals with 300 cd/m² brightness, ideal for both bright environments and detailed content
  • sRGB feature enables responsive operation and efficient task handling
  • 3440 x 1440 maximum resolution delivers razor-sharp detail and stable image performance
  • LCD monitor resists screen burn-in and delivers long-term clarity for reliable performance across daily viewing tasks
  • The 3440x1440 resolution with UltraWide Quad HD mode delivers immersive visuals and sharp picture quality across wide screens
  • VESA mount support enables secure, space-saving installation on walls or arms to suit your preferred viewing setup


SPECIFICATION

Built-in Devices
Built-in Devices KVM Switch
Power Description
Frequency 60 Hz
50 Hz
Interfaces/Ports
USB Yes
HDMI Yes
DisplayPort Yes
Total Number of HDMI Ports 2
USB Type-C Yes
Number of HDMI 2.0 Ports 2
Video
Brightness 300 cd/m²
Color Supported 1.07 Billion Colors
Maximum Resolution 3440 x 1440
Native Contrast Ratio 4,000:1
Tearing Prevention Technology AMD FreeSync Premium
Color Gamut 99% sRGB (CIE 1931)
Pixel Per Inch (PPI) 110
General Information
Product Type LCD Monitor
Manufacturer Part Number 34U640B-B
Manufacturer Website Address https://solutions.lg.com/us
Manufacturer LG Electronics
Product Model 34U640B-B
Product Name 34 Inch UltraWide, WQHD Curved (1800R) 144Hz Monitor
Product Line Ultrawide
Brand Name LG

Physical Characteristics
Weight (Approximate) 5.58 kg
Height 358.14 mm
Width 810.26 mm
Depth 91.44 mm
Weight with Stand (Approximate) 7.71 kg
VESA Mount Compatible Yes
VESA Mount Standard 100 x 100
Height with Stand 464.82 mm
Width with Stand 810.26 mm
Depth with Stand 220.98 mm
Product Color Negro
Color Family Other

Technical Information
Aspect Ratio 21:9
Pixel Pitch 0.23175 mm x 0.23175 mm
Response Time 5 ms
Features Super Resolution+
DTS Headphone: X
sRGB
Split Screen
SmoothMotion Technology
Smart Energy Saving
Reading Mode
Picture in Picture
Picture by Picture
Narrow Bezel
KVM
HDR10
Flicker-free
Factory Calibration
Dynamic Action Sync
Dual Controller
Crosshair
Color Weakness Mode
Color Vibrance
Blue Light Reduction
Black Stabilizer Technology
Auto Input Switch
Mount Type Desk Mountable
Wall Mountable
Viewable Screen Size 34"
Screen Mode UW-QHD
Number of Screens 1
Horizontal Viewing Angle 178°
Vertical Viewing Angle 178°
Panel Technology Vertical Alignment (VA)
Curved Screen Yes
Screen Size Class 34"
Stand Adjustments Tilt
Height
Adjustable Stand Yes
Response Time Details 5 ms GTG (Fast)
Curvature 1800R
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