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Compare LG 34WL850 vs Dell UltraSharp U4021QW vs Dell U2721DE

Connectivity

Ports
2x HDMI 2.0, 1x DisplayPort 1.4, 1x 3.5 mm Audio Out, 1x Thunderbolt 3.0, 1x USB 2.0 (upstream), 2x USB 3.0 (downstream)
1x USB 3.2 (Type-C; downstream; 15W), 1x Ethernet RJ45 (Gigabit), 1x DisplayPort 1.4, 1x 3.5 mm Audio Out (line-out for speakers), 1x Thunderbolt 3.0 (Type-C; upstream; 90W; DP Alt Mode), 2x HDMI 2.0, 4x USB 3.2 (Type-A; Gen 1; downstream), 1x USB 3.2 ...
1x USB 3.1 (Type-C; upstream; DP; 65W), 1x Ethernet RJ45, 1x DisplayPort 1.4, 1x 3.5 mm Audio Out, 1x DisplayPort 1.4 (Output MST), 1x HDMI 1.4, 2x USB 3.0 (downstream), 2x USB 3.0 (downstream; BC 1.2)

Construction

Adjustment | Height
110 mm / 4.3307 in
120 mm / 4.7244 in
130 mm / 5.1181 in
Adjustment | Pivot
N/A
N/A
-90° ~ 90°
Adjustment | Swivel
N/A
-30° ~ 30°
-40° ~ 40°
Adjustment | Tilt
-5° ~ 15°
-5° ~ 21°
-5° ~ 21°
Camera
No
No
No
Colors
White
Black
Black
Form Factor
Curved monitor
Speakers
2x 7W
2x 9W
VESA Mount
100 x 100 mm
100 x 100 mm
100 x 100 mm

Dimensions

Bezels
88.45% screen-to-body ratio
92.16% screen-to-body ratio
Size | Depth
2.02 in / 51.2 mm w/o stand, 9.06 in / 230 mm w/ stand
9.76 in / 248 mm w/ stand
1.54 in / 39 mm w/o stand, 7.09 in / 180 mm w/ stand
Size | Height
14.56 in / 369.8 mm w/o stand, 18.14 in / 460.7 mm w/ stand
18.02 in / 457.8 mm w/ stand
13.98 in / 355 mm w/o stand, 15.36 in / 390.2 mm w/ stand
Size | Width
32.5 in / 825.6 mm
37.27 in / 946.6 mm
24.1 in / 612.2 mm
Weight
5.9 kg / 13 lbs w/o stand , 7.6 kg / 17 lbs w/ stand
9.5 kg / 21 lbs w/ stand
4.19 kg / 9 lbs w/o stand , 6.24 kg / 14 lbs w/ stand

Display

Aspect Ratio
21:9
21:9
16:9
Brightness
350 nits / 400 nits (peak)
300 nits
350 nits
Contrast Ratio
1000:1 (static)
1000:1 (static)
1000:1 (static)
Display Backlight
W-LED
W-LED
W-LED
Display Color Depth
10 bits (8 bits + FRC), 1073741824 colors
10 bits, 1073741824 colors
8 bits, 16777216 colors
Display Curvature
2500R
Display Diagonal
34" (34 in / 863.6 mm)
40"
27" (26.96 in / 684.7 mm)
Display Type
AH-IPS, Anti-glare/Matte (3H), LG Display
IPS, Anti-glare/Matte (3H)
IPS, Anti-glare/Matte (3H)
Gamut
98% DCI-P3, 135% sRGB
98% DCI-P3, 100% sRGB
89% DCI-P3, 99% sRGB
Pixel Density
110 ppi
109 ppi
Pixel Pitch
0.231 mm
0.233 mm
Refresh Rate
56 Hz ~ 61 Hz
60 Hz
56 Hz ~ 76 Hz
Resolution
UW-QHD (3440x1440)
5K2K WUHD (5120x2160)
QHD (2560x1440)
Response Time
5 ms (min)
5 ms (min) / 8 ms (avg)
5 ms (min) / 8 ms (avg)
Viewing Angle
178° H / 178° V
178° H / 178° V
178° H / 178° V

Function

HDR
HDR10, DisplayHDR 400
Licenses
BSMI, CCC, CE, cTick, ENERGY STAR 7.0, ErP, FCC Class B, UL/cUL
ENERGY STAR, EPEAT, TCO Certified, RoHS, NFPA 99
Operating Humidity
10 % ~ 80 %
10 % ~ 80 %
10 % ~ 80 %
Operating Temperature
0 °C ~ 40 °C , 32 °F ~ 104 °F
0 °C ~ 40 °C , 32 °F ~ 104 °F
0 °C ~ 40 °C , 32 °F ~ 104 °F
Video
DDC/CI, Dynamic Action Sync, HDCP (High-bandwidth Digital Content Protection) 2.2, Picture-by-Picture, Nano IPS, Hardware calibration ready, 6-Axis Control, Screen Split 2.0, Black Stabilizer, Super Resolution+
KVM Switch, Low Blue Light, Picture-in-Picture, Picture-by-Picture, ComfortView Plus, Flicker-free technology
Flicker-free technology, Low Blue Light

Performance

Energy Efficiency
B
Power Consumption
47.6 W (average) / 0.3 W (off)
51.5 W (average) / 240 W (max) / 0.5 W (sleep)
33.2 W (average) / 160 W (max) / 19.9 W (eco) / 0.3 W (sleep) / 0.3 W (off)

Production

Accessory
DisplayPort cable, HDMI cable
DisplayPort cable, HDMI cable, Thunderbolt 4 (USB-C) Active Cable, USB Type-A to Type-B cable
DisplayPort cable, USB Type-C to Type-C cable
Debut
2019
2021
2020

Reviews

Neofiliac score
87%
77%
56%
Pros
  • HDR10, DisplayHDR 400
  • Ultra-wide form factor
  • Rich color reproduction
  • Stand with tilt and height adjustments
  • High 1000:1 contrast ratio
  • 10-bit display panel
  • Build-in speakers included
  • Ultra-wide form factor
  • 2500 curvature
  • Rich color reproduction
  • Stand with tilt, swivel, and height adjustments
  • High 1000:1 contrast ratio
  • 10-bit display panel
  • Build-in speakers included
  • Stand with tilt, swivel, pivot, and height adjustments
  • High 1000:1 contrast ratio
  • High 92.16 % screen-to-body ratio
Cons
  • No publicized HDR support
  • No publicized HDR support
  • 8-bit display panel

Price

Offers (incl. referral links)
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