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Alienware 120Hz UltraWide Gaming 34 Inch Curved Monitor with WQHD (3440 x 1440) Anti-Glare Display, 2ms Response Time, Nvidia G-Sync, Lunar Light - AW3420DW
Dell

Dell Alienware 120Hz UltraWide Gaming 34 Inch Curved Monitor (AW3420DW)

Bottom line: The Dell Alienware 120Hz UltraWide Gaming 34 Inch Curved Monitor ($635.00 on Amazon as of 2026-10-21 10:26 UTC): 3440x1440 WQHD on a 1900R curve for a wide 21:9 field of view; main trade-off: HDMI port is version 1.4 only, capping refresh rate on that input. Another in-stock pick with the same 34" 3440x1440 monitor: the LG 34WN80C-B UltraWide Monitor 34” 21:9 Curved…, $499.99 on Amazon as of (price may vary).

$635.00

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Buy on Amazon — $635.00 Compare to similar gaming monitors

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For gaming and productivity monitors, synthesises manufacturer specs against measured monitor reviews (RTINGS, Monitors Unboxed) rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. How we check display specs →

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 3440x1440 WQHD on a 1900R curve for a wide 21:9 field of view
  • ✓ 98% DCI-P3 color coverage (134.5% sRGB) via IPS Nano Color
  • ✓ Hardware NVIDIA G-SYNC eliminates tearing without V-Sync stutter
  • ✓ 120Hz native refresh with 2ms response time for fast camera pans

Cons

  • ✗ HDMI port is version 1.4 only, capping refresh rate on that input
  • ✗ 350 cd/m2 brightness is modest; no HDR certification listed
  • ✗ 1000:1 contrast ratio means IPS-typical grey blacks in dark scenes
  • ✗ 120Hz trails newer 144Hz and 175Hz ultrawides at similar sizes

Manufacturer description

The 1900R curve and 21:9 aspect ratio widen your field of view in racing sims, open-world RPGs, and strategy games, while the 120Hz native refresh rate and 2ms response time keep fast camera pans readable. NVIDIA G-SYNC hardware sits in the panel to lock frames to your GPU output, so tearing and artifacting disappear without the stutter of V-Sync. Color coverage is the standout spec: 98% DCI-P3, equivalent to 134.5% sRGB, which puts this Dell-built Alienware display in cinematic color territory rather than typical gaming-panel territory. Brightness reaches 350 cd/m2 with a 1000:1 contrast…

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SpecPicks Verdict

SpecPicks scored Dell Alienware 120Hz UltraWide Gaming 34 Inch Curved Monitor using a rating × review-volume × price-fit model applied to published specs and reviews across the gaming monitors category. Dell's gaming monitors lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for gaming monitors of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

What resolution and refresh rate does the AW3420DW run?

It runs WQHD 3440x1440 at a 120Hz native refresh rate with a 2ms response time, in a 21:9 aspect ratio on a 1900R curved panel.

Does this monitor work with an AMD graphics card?

It ships with NVIDIA G-SYNC, which requires an NVIDIA GPU over DisplayPort for adaptive sync. An AMD card will still drive the display normally, just without the G-SYNC tear elimination.

What ports does the Alienware AW3420DW have?

One HDMI 1.4, one DisplayPort 1.2, one USB 3.0 upstream, two rear USB 3.0 downstream, two front-bottom USB 3.0 downstream (one with power charging), a headphone-out jack, and an audio line-out jack.

Is the color accurate enough for photo and video editing?

It covers 98% DCI-P3, which Dell rates as 134.5% of sRGB, using IPS Nano Color technology. That exceeds the sRGB spectrum and meets the DCI-P3 cinematic standard, though it is not sold as a factory-calibrated production display.

How bright is it, and does it handle a well-lit room?

Typical brightness is 350 cd/m2 with a 1000:1 contrast ratio, and the panel uses a 3H-hardness anti-glare coating. Viewing angles are 178 degrees horizontal and vertical.

Key Features

  • Experience breathtaking views with a combination of immersive features
  • Aspect Ratio is 21:9; Viewing Angle is 178º (H) / 178º (V); Brightness is 350 cd/m²(typical)
  • A 1900R curved, wide 21: 9 display maximizes the field of view and provides an even, consistent viewing experience
  • With a WQHD (3440x1440) resolution, the image is sharp and detailed delivering an immersive experience
  • A 120Hz refresh rate with NVIDIA G-SYNC provides buttery smooth gameplay and realism
  • G-sync technology synchronizes the GPU and monitor, displaying full frames only when the monitor is capable of displaying them; This minimizes graphic distortions such as tearing and artifacts from forming on screen

Full Specifications

BrandDell
ColorBLACK
Shaperectangular prism
Voltage240 volts
Brightness1199.1 lm
Model Name091K255
ResolutionQHD Wide 1440p
Unit Count1 Count
Color Gamut1.35
Pixel Pitch0.23
Screen Size34 inches
Aspect Ratio21:9
Display TypeLED
Model NumberAW3420DW
Refresh Rate120 hertz
Adaptive SyncG-Sync
Mounting TypeWall Mount
Response Time2 milliseconds
Screen FinishGlossy
Viewing Angle178 degrees
Full listing titleAlienware 120Hz UltraWide Gaming 34 Inch Curved Monitor with WQHD (3440 x 1440) Anti-Glare Display, 2ms Response Time, Nvidia G-Sync, Lunar Light - AW3420DW

Ready to buy?

Alienware 120Hz UltraWide Gaming 34 Inch Curved Monitor with WQHD (3440 x 1440) Anti-Glare Display, 2ms Response Time, Nvidia G-Sync, Lunar Light - AW3420DW is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $635.00

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

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Alienware 120Hz UltraWide Gaming 34 Inch Curved Monitor with WQHD (3440 x 1440) Anti-Glare Display, 2ms Response Time, Nvidia G-Sync, Lunar Light - AW3420DW
$635.00
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