LG 34U640B-B 34-Inch UltraWide Curved Monitor — 144Hz, HDR10, USB-C PD 65W

Overview

The LG 34U640B-B introduces an expansive, immersive workspace with a 34-inch UltraWide curved screen. Its 21:9 aspect ratio and 3440×1440 WQHD resolution give you ample horizontal space to view multiple apps side by side, while the subtle 1800R curvature follows your natural line of sight for comfortable, extended sessions. The nearly borderless design helps keep focus on content, whether you’re reviewing documents, designing, or coordinating teams across windows.

Designed for smooth, consistent visuals, this monitor blends performance with practical features. A 144Hz refresh rate and 5 ms response time offer fluid motion for video calls, streaming, and light gaming. AMD FreeSync Premium helps minimize tearing and stutter, so fast-paced moments stay controlled and visually coherent. HDR10 support paired with up to 99% sRGB coverage delivers vibrant yet accurate color representation across work, media, and HDR content.

Connectivity is straightforward and tidy. USB-C serves as an all-in-one hub, handling display, data transfer, and up to 65W laptop charging with a single cable. HDMI and DisplayPort inputs, plus dual USB ports, enable easy connections to laptops and peripherals, helping you maintain a clean, organized desk. The dual controller (KVM) feature lets you manage two PCs with one monitor, keyboard, and mouse, with simple drag-and-drop file transfer between systems—streamlining workflows without extra hardware clutter.

The built-in Switch app transforms your screen into a multitasking hub. You can split the display into up to six sections, tailor layouts to your preferred workflows, or launch video calls quickly with a hotkey. For long reading or browsing sessions, Reader Mode trims blue light and shifts to warmer tones for a more comfortable feel. The slim, space-saving stand offers tilt and height adjustment and one-click mounting for fast, flexible setup. These thoughtful details are designed to help you customize your daily routine to your needs without sacrificing clarity or comfort.

What you may gain from this setup is a calmer, more productive desk where content from multiple sources can coexist on screen, enabling safer cross‑app workflows and easier collaboration. While results will vary by use, the combination of UltraWide real estate, smooth motion, and versatile connectivity suggests potential improvements in efficiency and readability for many professional tasks.

Key capabilities

• Curved 21:9 UltraWide WQHD display for expansive multitasking
• 144Hz refresh rate with 5 ms response time for smooth motion
• AMD FreeSync Premium for tear-free visuals
• HDR10 and up to 99% sRGB for vibrant color and consistency
• USB-C with up to 65W charging plus HDMI, DisplayPort, and two USB ports
• Dual Controller (KVM) to manage two PCs with one setup
• Switch app for up to six split sections and hotkey launches
• Reader Mode with warmer tones to ease long reading sessions
• Slim stand with tilt, height adjust, and quick mounting

Ideal use cases

• Open multiple documents, dashboards, and design apps side by side
• Participate in video calls while referencing other apps in real time
• Work across creative software, data analysis, and coding with fewer window switches