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LG

UltraFine 40U990A-W

Massive curved ultrawide that replaces two monitors — made for multitasking, not gaming.

39.7
2160p
120Hz
Nano IPS
$1999.99
at Newegg · last refreshed 2d ago
Also at:Best Buy
AI summary

This is the monitor for someone who wants their entire desk to be screen. At 40 inches wide with a gentle curve, it's like having two regular monitors side by side without the bezel down the middle. The resolution is 5K ultrawide, which means you can fit spreadsheets, browser tabs, and chat windows all at once without things looking stretched or blurry.

The Thunderbolt ports let you plug a laptop in with one cable and get power, picture, and any USB devices attached to the monitor — the same clean desk setup Dell sells, but on a screen twice as wide. Colors are accurate out of the box, so it's solid for photo work or video editing if you need the extra room to see timelines and previews together.

The 120Hz refresh makes scrolling and dragging windows feel smoother than older 60Hz screens, but this isn't really a gaming monitor. Games will run fine, but the ultrawide shape crops or stretches a lot of titles, and the HDR label here doesn't deliver the punchy highlights real HDR gives you.

Spec sheet

Display

Size39.7″
Resolution5120 × 2160
Aspect ratio21:9
PanelNano IPS
Curvaturecurved

Performance

Refresh rate120 Hz
Response time5 ms
HDRHDR10

Connectivity

Ports
8 connectors
HDMI
  • 2× HDMI
DisplayPort
  • 1× DisplayPort
Thunderbolt
  • 2× Thunderbolt
USB-A
  • 2× USB-A
Audio
  • 1× Audio out (3.5mm)
VESA mount100x100

Sources

ManufacturerView specs ↗