1. Try Searching by
    1. Category (Best $100 Headphones, Best 50 Inch TVs, …)
    2. Brand (Sony, Samsung, LG, Bose, …)
    3. Model (S405, QC 35 II, …)
    4. Etc
Get insider access
Get insider access
Preferred store
Your browser is not supported or outdated so some features of the site might not be available.
Best
Gaming Monitors 4k Gaming PS5/PS5 Pro Budget Gaming MacBook Pro Curved Gaming 1440p Gaming 4k OLED Curved Budget Mac Mini High Refresh Rate Xbox Series X Ultrawide Office Gaming Size Brands Dual Setup
Tools
Compare Table Review List Review Index Graph Custom Ratings
Popular
AOC Q27G3XMN MSI MPG 321URX QD-OLED MSI MPG 271QRX QD-OLED Samsung Odyssey OLED G80SD S32DG80 Acer Nitro XV275K P3biipruzx ASUS ROG Strix OLED XG27AQDMG Dell Alienware AW3225QF Dell G2724D LG 27GS95QE-B Samsung Odyssey OLED G60SD S27DG602S LG 32GS95UE-B LG 27GP850-B/27GP83B-B ASUS ROG Swift OLED PG32UCDM Gigabyte AORUS FO27Q3 ASUS ROG Strix OLED XG27ACDNG Dell Alienware AW2725DF ASUS ROG Strix XG27ACS MSI MPG 341CQPX QD-OLED Dell Alienware AW3423DWF Samsung Odyssey Neo G8 S32BG85
347
Monitors bought and tested
Supported by you via insider access, and when you purchase through links on our site, we may earn an affiliate commission.
Driven by data, run by a passionate team of engineers, testers, technical writers, developers, and more.
We are hiring!
  1. Home
  2. Monitor
  3. Compare
  1. Table of Contents
  2. Top
  3. Main Differences
  4. Design
    1. Style
    2. Stand
    3. Ergonomics
    4. Back
    5. Borders
    6. Thickness
    7. Build Quality
  5. Picture Quality
    1. Contrast
    2. Local Dimming
    3. SDR Peak Brightness
    4. HDR Peak Brightness
    5. Horizontal Viewing Angle
    6. Vertical Viewing Angle
    7. Gray Uniformity
    8. Black Uniformity
    9. Pre Calibration
    10. Post Calibration
    11. SDR Color Gamut
    12. SDR Color Volume
    13. HDR Color Gamut
    14. HDR Color Volume
    15. Image Retention
    16. Gradient
    17. Color Bleed
    18. Reflections
    19. Text Clarity
  6. Motion
    1. Response Time @ Max Refresh Rate
    2. Response Time @ 60Hz
    3. Image Flicker
    4. Black Frame Insertion (BFI)
    5. Refresh Rate
  7. Inputs
    1. Input Lag
    2. Resolution And Size
    3. Inputs
    4. Total Inputs
  8. Features
    1. Additional Features
    2. On-Screen Display (OSD)
    3. Controls
    4. In The Box
  9. Comments

Dell UltraSharp U2520D vs Dell UltraSharp U2721DE

Side-by-Side Comparison

Products

Dell UltraSharp U2520D
Dell UltraSharp U2721DE

Tested using Methodology v1.1

Updated Jul 04, 2022 06:56 PM

SEE PRICE
Amazon.com

Tested using Methodology v1.1

Updated Dec 14, 2023 04:44 PM

SEE PRICE
Amazon.com
Dell UltraSharp U2520D Picture
Dell UltraSharp U2721DE Picture
Size25"
Pixel Type
IPS
Variable Refresh Rate
No VRR
Native Resolution2560 x 1440
Max Refresh Rate
60 Hz
Size27"
Pixel Type
IPS
Variable Refresh Rate
No VRR
Native Resolution2560 x 1440
Max Refresh Rate
60 Hz

Variants

  • U2520D (25")
  • UltraSharp U2721DE (27")

Review

See Dell UltraSharp U2520D review

See Dell UltraSharp U2721DE review

0
0

Our Verdict

Dell UltraSharp U2520D

Dell UltraSharp U2721DE

The Dell UltraSharp U2520D is better than the Dell UltraSharp U2721DE. The U2520D supports HDR, it displays a wider SDR color gamut, has much better out-of-the-box color accuracy, and it has a quicker response time. The U2721DE handles reflections better and it has a wider vertical viewing angle.

0
We make money directly from you via insider access (which gives you access to extra features) and when you buy a product after clicking a link to a retailer. Learn more about how we work.
We buy our own products, just like you, mostly from the United States. When a product is discontinued or no longer popular, we sell the review units locally. You can see what products we currently have for sale here.
© 2025 9298-5266 Quebec Inc. All Rights Reserved. Visit our corporate site.