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  3. UltraSharp U2421HE vs VP2456

Dell UltraSharp U2421HE vs ViewSonic VP2456

What UltraSharp U2421HE does better (1) and where VP2456 wins (2) — every spec side by side.

Dell UltraSharp U2421HE
Dell · 2020UltraSharp U2421HE
3.5Score
1 advantage≈ $270
vs
ViewSonic VP2456
ViewSonic · 2022VP2456
3.9Score
2 advantages≈ $220
Higher score
2.1Screen2.2
2.3Colour accuracy3.6
8.1Connectivity2.1
2.9Design & ergonomics7.6
Dimensions

Size comparison

UltraSharp U2421HEVP2456
538 × 348165539 × 388.5215
UltraSharp U2421HEVP2456Difference
Height348 mm388.5 mm−40.5 mm
Width538 mm539 mm−1 mm
Depth165 mm215 mm−50 mm

Drawn to the same scale from the official dimensions (front and side).

Why is UltraSharp U2421HE better than VP2456?

  1. DisplayPort inputs2 vs 12×

Why is VP2456 better than UltraSharp U2421HE?

  1. SwivelNo · UltraSharp U2421HE: Yes
  2. Response time8 ms vs 5 ms+60%
Specifications

Side by side

Dell UltraSharp U2421HEDell UltraSharp U2421HE≈ $2703.5
ViewSonic VP2456ViewSonic VP2456≈ $2203.9
Display
Screen size23.8″24″
Resolution1920 × 10801920 × 1080
Resolution classFull HDFull HD
Pixel density92 ppi92 ppi
Aspect ratio16:916:9
Panel typeIPSIPS
Refresh rate60 Hz—
Brightness (typical)250 nits250 nits
Contrast ratio (static)1,000:11,000:1
Response time8 ms5 ms
Anti-glare / matte screenYesYes
Colour
sRGB coverage99%100%
DCI-P3 coverage85%—
Colour accuracy (ΔE, claimed)—ΔE 2
Colour depth8 bit8 bit
Hardware calibration—Yes
Factory calibrated (report)—Yes
Connectivity
USB-C video input (one cable)—Yes
USB-C charging (Power Delivery)—60 W
HDMI inputs11
DisplayPort inputs21
USB hubYes—
Ethernet (RJ45)Yes—
Built-in speakers—Yes
Design & ergonomics
Height adjustment130 mm130 mm
Pivot (portrait rotation)YesYes
SwivelNoYes
Weight—6.5 kg
Width538 mm539 mm
Height348 mm388 mm
Depth165 mm215 mm
Product lineDell UltraSharp—

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