LG
34U640B-B 34-Inch UltraWide 21:9 QHD (3440 x 1440) Curved Professional Computer Monitor, 144Hz, FreeSync Premium, HDR10, HDMI, DisplayPort, USB Type-C PD 65W, Tilt/Height Adjustable Stand, Black
*Price sourced from Amazon.com. Last updated 2026-05-23. Price and availability subject to change.
The 34U640B-B LG UltraWide monitor is built to elevate productivity, creativity, and everyday comfort. Its expansive 34" 21:9 UltraWide WQHD (3440×1440) display gives you more room to multitask across multiple windows—reducing clutter and helping you stay focused. A subtle 1800R curve and slim, virtually borderless design create a more natural, distraction-free workspace.A 144Hz refresh rate and 5ms response time keep visuals smooth and clear for video calls, streaming, and gaming. AMD FreeSync Premium reduces tearing and stutter for controlled responsive motion. With up to 99% sRGB coverage…
SpecPicks Verdict
SpecPicks classifies LG 34U640B-B 34-Inch UltraWide 21:9 QHD (3440 x 1440) Curved… as a category leader on buyer feedback in the gaming monitors category, based on 1 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. LG's positioning sits comfortably above the category median. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for gaming monitors of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Highly rated — 5.0★ average across customer reviews
- ✓ Backed by LG's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Limited review volume so far — fewer data points on long-term reliability
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- 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.
Full Specifications
| Brand | LG |
|---|---|
| Color | Black |
| Shape | Curved |
| Voltage | 240 Volts |
| Brightness | 300 Candela per Square Meter |
| Model Name | 34U640B-B.AUS |
| Resolution | QHD Ultra Wide 1440p |
| Unit Count | 1.0 Count |
| Pixel Pitch | 0.23175 |
| Screen Size | 34 Inches |
| Aspect Ratio | 21:9 |
| Connectivity | USB-C |
| Display Type | LED |
| Model Number | 34U640B-B.AUS |
Ready to buy?
LG 34U640B-B 34-Inch UltraWide 21:9 QHD (3440 x 1440) Curved Professional Computer Monitor, 144Hz, FreeSync Premium, HDR10, HDMI, DisplayPort, USB Type-C PD 65W, Tilt/Height Adjustable Stand, Black is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-23. Price and availability subject to change.
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