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34-inch ultrawide QD-OLED monitor in Interstellar Indigo with 1800R curve, ultra-thin bezels, and ergonomic stand

DELL

DELL Alienware AW3425DW 34" QD-OLED 240Hz gaming monitor

SKU CH-Y8DB-M9ZTS

A 34" QD-OLED ultrawide with 3440×1440 resolution, 240 Hz refresh, 0.03 ms response, 99.3 % DCI-P3 colour and HDR 400 TrueBlack

  • Screen size34 in (86.4 cm)
  • Display resolution3440 × 1440 (2K)
  • Refresh frequency240 Hz
  • Panel typeOLED
  • Pixel response time0.03 ms
  • Bezel styleUltraThin Frame
  • 34" 1800R ultrawide curve wraps the action around your vision
  • QD-OLED panel hits 99.3% DCI-P3 for cinema-grade colour accuracy
  • 240 Hz refresh paired with 0.03 ms response keeps motion razor-sharp
  • FreeSync Premium Pro plus G-Sync compatible sync eliminates tearing at any frame rate
  • VESA DisplayHDR TrueBlack 400 delivers 1000 nit peak brightness and infinite contrast

34-inch QD-OLED ultrawide for competitive play

The 34-inch QD-OLED panel delivers a 3440 x 1440 resolution at a 21:9 aspect ratio with an 1800R curve. A 240 Hz refresh rate and 0.03 ms response time provide the speed required for high-level competitive gaming. DCI-P3 99.3% coverage and 1.07 billion colors ensure accurate, vivid visuals for immersive single-player experiences.

Connectivity and ergonomics built for a clean desk

Video inputs include one DisplayPort 1.4, one USB-C with DisplayPort Alternate Mode, and two HDMI 2.1 ports. A USB 5 Gbps Type-B upstream port enables the monitor’s integrated hub for peripherals. The stand offers height, pivot, swivel, and tilt adjustments so the screen can be positioned precisely without extra mounting hardware.

Steps up from standard IPS ultrawides

The QD-OLED technology replaces traditional backlit panels with per-pixel lighting for a 1,500,000:1 contrast ratio and true blacks. VESA DisplayHDR TrueBlack 400 certification and 1000 nits peak brightness upgrade HDR performance significantly. The jump is worth it when motion clarity, contrast depth, and color volume are priorities over basic high-refresh gaming.

How it compares

Measured against everything we stock in Monitors for Gamers, at today’s prices. Recalculated every night.

Price $608.99
Pricier than about 89% of the 839 comparable items (median $189.99).
Screen size 34 in (86.4 cm)
Higher than about 90% of the 814 comparable items (median 27 in).
Refresh frequency 240 Hz
Higher than about 70% of the 735 comparable items (median 180 Hz).

Specifications

Product
Brand nameAlienware
Model nameAW3425DW
Part numberAW3425DW
Case colorInterstellar Indigo
Display
Screen size34 in (86.4 cm)
Display resolution3440 × 1440 (2K)
Refresh frequency240 Hz
Panel typeOLED
Pixel response time0.03 ms
Screen curvatureCurved
Bezel styleUltraThin Frame
Widescreen formatYes
Screen finishAnti-glare
Display formatQHD
Variable refresh rateFreeSync Premium Pro & G-Sync Compatible
Highest resolution3440 × 1440
Screen ratio21:9
Contrast1,500,000:1
Color gamut coverageDCI-P3 99.3%
Colors displayed1.07 Billion
Pixel pitch0.2315 mm x 0.2315 mm
DisplayHDR certificationDisplayHDR True Black 400
Horizontal scan rate240 Hz
Audio & video
Integrated speakersNo
Integrated webcamNo
Ports & slots
Connection typesDisplayPort, HDMI, USB
HDMI ports2 x HDMI 2.1
DisplayPort connectors1 x DisplayPort 1.4
Video connectors1 x DisplayPort 1.4 / 1 x USB-C (DP Alternative) / 2 x HDMI 2.1
USB connections1 USB 5 Gbit/s Type-B upstream port
1 USB 5 Gbit/s Type-A downstream port
Size & build
Stand adjustabilityHeight, Pivot, Swivel, Tilt
VESA mounting pattern100 × 100 mm
Product dimensionsHeight: 14.23 in; Width: 32.05 in; Depth: 4.38 in
In the box
3D glasses includedNo
More details
3D readyNo
Complies withEnergy-related Products Directive Lot 5 (ErP Lot 5)
Built-in TV tunerNo

Questions about this item

How does the 1,500,000:1 contrast ratio hold up during long HDR sessions?

The QD-OLED panel maintains its 1,500,000:1 contrast ratio continuously because each pixel emits its own light, so black levels do not degrade even after hours of HDR400 content at up to 1000 nits peak brightness.

What are the thermal and acoustic characteristics when the monitor runs at 240 Hz all day?

The display operates silently with no fans; heat is dissipated passively through the rear vents, and the panel temperature stays within normal OLED limits during continuous 240 Hz use.

Which cables and ports must my PC already provide to use every feature?

You need a graphics card with DisplayPort 1.4 or HDMI 2.1 for 3440 x 1440 at 240 Hz, plus a USB-C port with DisplayPort Alt Mode if you want the single-cable video and 5 Gbps USB upstream connection.

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