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Computer Monitors

True Score Methodology v2.0

Dell U4021QW Review

Kenn Muguna Avatar
Kenn Muguna
Kenn Muguna Avatar
Kenn Muguna
    Kenn is a writer that’s fascinated by all things tech. Having been born curious about how everything works, he spends his time taking things apart to put them back together, and shares what he finds out through writing.
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    Updated Jan 25, 2024 6:28 PM

    Published

    True Score

    True Score is an AI-powered algorithm of product tests and customer reviews.

    76

    Mixed Reviews

    75
    2

    Experts

    83
    304

    Consumers

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    The Dell U4021QW is great for productivity thanks to its 40-inch widescreen and accurate color reproduction. It lacks a variable refresh rate, and HDR support, and has grayish blacks, making it unsuitable for pro gamers.

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    Table of Contents

    Product Snapshot

    Overview

    The Dell UltraSharp U4021QW is a high-end monitor released in 2021 that promises to deliver excellent picture quality thanks to its superb 5K resolution. The monitor features a curved screen that provides wide viewing angles, and with 0.4-inch bezels, the display is very easily adaptable to a multi-screen setup. The monitor’s 40-inch screen offers a wider field of view compared to the 34-inch LG 34GP83A-B, and with the stand’s great ergonomics, users will be able to easily adjust the display according to their preference. Make sure to read through the rest of this Dell UltraSharp U4021QW review to see how well it compares to other top-rated computer monitors.

    Consensus

    our Verdict

    The Dell U4021QW is a great pick for professionals and designers who need a large screen for increased productivity or color-accurate photo editing. However, gamers should look elsewhere, as this monitor has a low 60Hz refresh rate and doesn’t support FreeSync or Adaptive-Sync technologies. On the plus side, it has wide viewing angles, but its lack of HDR support and grayish blacks mean it’s not ideal for movie-watching.

    ReasonS to Buy

    • High 5K resolution delivers sharp images
    • Ultrawide screen is ideal for multitasking
    • Great ergonomics
    • Wide viewing angles

    Reason to Avoid

    • No support for HDR content
    • Low 60Hz refresh rate
    • No support for FreeSync or G-Sync
    • Low contrast ratio and grayish blacks

    Dell U4021QW Specs

    Display TypeLCD
    HDMI Inputs2
    HDR Formatn/a
    Max Resolution5120 x 2160
    Panel TypePanel TypeIPS
    Refresh Rate60 Hz
    Response TimeResponse Time8 ms
    Screen size39.7"
    Sync TechnologySync Technologyn/a

    All Specs

    Test Results

    These are the most important criteria to test for Computer Monitors based on our comprehensive Testing Methodology.

    Brightness (nits)256
    Contrast Ratio (as ratio, x:1)943
    Color Gamut/Accuracy % (DCI P3 xy)0
    Color Gamut/Accuracy % (DCI P3 uv)0
    Color Gamut % (Adobe RGB Coverage xy)88.5
    Color Gamut % (sRGB Coverage xy)100
    Color Gamut % (Rec. 2020 Coverage xy)0
    Color Gamut % (Rec. 709 Coverage xy)0
    Input Lag (ms)8.9
    Response Time (ms)6.5
    Reflections % (Total Reflections)6.6
    Horizontal Viewing Angle (Washout Left)43
    Horizontal Viewing Angle (Washout Right)45
    Vertical Viewing Angle (Washout Above)30
    Vertical Viewing Angle (Washout Below)33

    All Tests

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    Score Card

    E

    Expert Score

    75

    *.75

    We place a 75% weighted value on Expert Test Scores

    C

    Customer Score

    83

    *.25

    We place a 25% weighted value on Customer Scores

    True Score

    76

    Any product with a True Score above 70 is a Mixed Reviews

    Expert Scores

    Publications with higher Trust Ratings are given more weight.

    • Rtings
      101.4

      Category Trust Rating

      73
      The Dell U4021QW is a curved ultrawide UHD display that brings a premium look and… Read More

      By:

      John Loeffler
    • Techradar
      39

      Category Trust Rating

      80
      The Dell U4021QW is a good all-around monitor. The large size is well-suited to productivity… Read More

      By:

      Samuel Breton

    Customer Scores