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- UltraFine 40U990A
LGColour-accurate monitor
LG UltraFine 40U990A
LG UltraFine 40U990A is a colour-accurate monitor released in 2025. Key specs: screen size 39.7″, resolution 5120 × 2160, panel type IPS, pixel density 140 ppi.
7.7Score
Screen9.2
Connectivity8.7
Design & ergonomics2.9
price range$1,300–1,650Reference price converted from JPY
- Year
- 2025
- Brand
LG- Popularity
- #193 of 333
39.7″Screen size
5120 × 2160Resolution
IPSPanel type
140 ppiPixel density
99%DCI-P3 coverage
96 WUSB-C charging (Power Delivery)
14.1 kgWeight
Spec guide
How it ranks among colour-accurate monitors of 2025
Screen size · 39.7″Top 2%
Pixel density · 140 ppiBottom 41%
DCI-P3 coverage · 99%Top 10%
USB-C charging (Power Delivery) · 96 WTop 22%
Weight · 14.1 kgBottom 2%
Compared with colour-accurate monitors released in 2025. Bars show the share of models it beats.
compared with other colour-accurate monitors
Why is UltraFine 40U990A a good choice?
DCI-P3 coverage: 99%better than 86% of colour-accurate monitors
Brightness (typical): 450 nitsbetter than 86% of colour-accurate monitors
Screen size: 39.7″better than 94% of colour-accurate monitors
USB-C charging (Power Delivery): 96 Wbetter than 78% of colour-accurate monitors
Refresh rate: 120 Hzbetter than 83% of colour-accurate monitors
Specifications
Full specifications
Display
- Screen size
- 39.7″
- Resolution
- 5120 × 2160
- Pixel density
- 140 ppi
- Aspect ratio
- 21:9
- Refresh rate
- 120 Hz
- Brightness (typical)
- 450 nits
- Contrast ratio (static)
- 2,000:1
- Response time
- 5 ms
- Anti-glare / matte screen
- Yes
- Curved screen
- Yes
Connectivity
- USB-C video input (one cable)
- Yes
- USB-C charging (Power Delivery)
- 96 W
- Thunderbolt
- Yes
- KVM switch
- Yes
- HDMI inputs
- 2
- DisplayPort inputs
- 1
- USB hub
- Yes
- Built-in speakers
- Yes
Design & ergonomics
- Height adjustment
- 130 mm
- Swivel
- Yes
- Weight
- 14.1 kg
- Width
- 948 mm
- Height
- 614 mm
- Depth
- 260 mm
Specs are collected from manufacturers and open databases and normalised to one format; check details with the seller before you buy.
Compare
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In collections
Monitors & pen tablets: Resolution class 5K + thunderbolt12Monitors & pen tablets: Screen size from 31.5″ + refresh rate from 120 hz18Monitors & pen tablets: Refresh rate from 120 Hz + thunderbolt20Monitors & pen tablets: Refresh rate from 120 Hz + KVM switch24Monitors & pen tablets: Screen size from 31.5″ + thunderbolt26Monitors & pen tablets: USB-C charging (Power Delivery) from 90 W + thunderbolt29Monitors & pen tablets: Refresh rate from 120 Hz + USB-C charging (power delivery) from 65 w29Monitors & pen tablets: Thunderbolt + KVM switch30
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