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LG 34" LED - UltraWide 34U640B-B
UltraWide WQHD - 3440 x 1440 pixels - 5 ms (gray to gray) - 21/9 - Curved VA panel - 144 Hz - HDR10 - FreeSync Premium - HDMI/DisplayPort/USB-C - Black
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Comfort and versatility on a curved 21/9 display
The LG 34U640B-B monitor is a 34-inch UltraWide WQHD display designed to boost productivity and immersion. With its 1800R curvature and its refresh rate of 144 Hz, it is aimed at both professionals and gamers looking for an extended workspace and a smooth visual experience at an affordable price.
The comfort of an extra-wide curved display
The LG 34U640B-B stands out with its UltraWide 21:9 display offering a WQHD resolution (3440 × 1440) for detailed and accurate visuals. Its 1800R curvature naturally matches your field of view, reducing eye strain and improving comfort during long sessions.
Thanks to a 144 Hz refresh rate, images remain sharp and fluid, whether for work, gaming or streaming. Support for HDR10 and 99% coverage of the sRGB color space guarantees faithful colors and deep contrasts, while AMD FreeSync Premium technology eliminates stuttering and latency for an optimal gaming experience.
Efficiency made simple
Ideal for multitasking, this monitor lets you display several windows side by side without any loss of quality, making it an ally for creative professionals, video editing, or project management. Gamers will appreciate its responsiveness and compatibility with the latest graphics technologies.
The HDMI, DisplayPort and USB-C connectivity ensure easy integration with a variety of devices, while the LG Switch application simplifies workspace customization by splitting the screen according to your needs.
Innovative features for gamers
Enjoy greater comfort with innovative features designed to improve display quality and gaming performance. Dynamic Action Sync reduces input lag to support your reaction time. Black Stabilizer improves contrast in dark areas so you can better see what is hidden there. Crosshair fixes the aiming point at the center of the screen to improve accuracy. FPS Counter lets you see the FPS rate in real time.
Key features:
- 34-inch UltraWide display with WQHD resolution (3440 × 1440) and 21:9 aspect ratio
- 1800R curvature for optimal visual comfort
- Refresh rate of 144 Hz for enhanced fluidity
- HDR10 compatibility and 99% sRGB coverage for accurate colors
- Technology AMD FreeSync Premium for stutter-free gaming
- HDMI, DisplayPort and USB-C connectivity (65W Power Delivery)
- LG Switch application for customized display management
- Height-adjustable stand up to 80 mm
Select your criteria
General information |
Product name |
LG 34" LED - UltraWide 34U640B-B |
Brand |
LG | |
Model |
34U640B-B.AEU | |
Display |
Screen size |
34 inches |
Screen format |
21:9 | |
Panel type |
VA (MVA, PVA) display | |
QD-OLED |
No | |
Max resolution |
3440 x 1440 pixels | |
High definition |
UltraWide WQHD | |
Dot Pitch |
0.23175 mm | |
Brightness |
300 cd/m² | |
Contrast |
4000 /1 | |
Response time |
5 ms | |
Angle of vision (horizontal) |
178 Degree(s) | |
Angle of vision (vertical) |
178 Degree(s) | |
Matte/anti-glare panel |
Yes | |
HDR (High Dynamique Range) |
Yes | |
HDR standards |
HDR10 | |
NVIDIA G-SYNC |
No | |
NVIDIA Reflex |
No | |
Adaptive-Sync |
Yes | |
AMD FreeSync |
Yes | |
FreeSync |
AMD FreeSync Premium | |
Flicker-Free |
Yes | |
Anti blue light |
Yes | |
Screen |
Screen type |
LED |
Range |
LG UltraWide | |
Widescreen |
Yes | |
Curved screen |
Yes | |
Monitor curvature |
1800R | |
Borderless |
Yes | |
Touch screen |
No | |
Max vertical frequency |
144 Hz | |
Type of activities |
Gamer | |
| Multimedia | ||
| Office | ||
Ergonomics |
Portable |
No |
Pivot |
No | |
Height adjustable stand |
Yes | |
Removable stand |
Yes | |
VESA mount |
100 x 100mm | |
Articulating arm |
No | |
Connectivity |
Video inputs |
1 X USB Type C Female |
| 1 X DisplayPort Female | ||
| 2 X HDMI Female | ||
HDMI standard |
HDMI 2.0 | |
DisplayPort standard |
DisplayPort 1.4 | |
Audio input |
None | |
Additional connector(s) |
2 X USB 3.0 | |
Dock USB-C |
No | |
Multimedia |
Built-in speakers |
No |
Webcam |
No | |
TV tuner |
No | |
Physical characteristics |
Color |
Black |
Release year |
2026 | |
Width |
809.1 mm | |
Height |
464.4 mm | |
Depth |
220 mm | |
Height (without stand) |
359 mm | |
Depth (without stand) |
91.5 mm | |
Weight |
7.7 kg | |
Weight (Without stand) |
5.6 kg | |
Multi-monitor bundle |
No | |
Power supply |
Energy class |
F |
Consumption |
30 kWh/1000h | |
Standby consumption |
0.8 W | |
Internal power supply |
No | |
Specificities |
PS5 optimized |
No |
Xbox Series optimized |
No | |
Warranties |
Commercial warranty |
Seller 5 years
|
Legal warranty |
See terms & conditions
|
|
Safety Information |
Responsible person |
LG Electronics Deutschland GmbH |
Postal address |
Alfred-Herrhausen-Allee 3-5, 65760 Eschborn, Germany | |
Electronic Address |
gpsr@lge.com |
See all LG products
Product referenced on 31 Jul 2026
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