Dell Alienware 34 240Hz QD-OLED (AW3425DW) vs Dell Alienware 34 280Hz QD-OLED (AW3426DW)

Every spec side by side, from each maker's published figures.

Only show differences

Better figure, where one is clearly better

Share comparison

Alienware 34 240Hz QD-OLED (AW3425DW) compared with Alienware 34 280Hz QD-OLED (AW3426DW)

	DellAlienware 34 240Hz QD-OLED (AW3425DW)	DellAlienware 34 280Hz QD-OLED (AW3426DW)
Overview
Released
Released	April 2025	June 2026
Display
Screen size
Screen size	34.2″	34″
Resolution
Resolution	3440 × 1440 (UWQHD)	3440 × 1440 (UWQHD)
Sharpness
Sharpness	109 pixels per inch	110 pixels per inch (better)
Panel
Panel	QD-OLED	QD-OLED (Penta Tandem QD-OLED)
Refresh rate
Refresh rate	240 Hz	280 Hz (better)
Response time (grey to grey)
Response time (grey to grey)	0.03 ms	0.03 ms
Brightness (typical)
Brightness (typical)	250 nits	300 nits (better)
HDR peak brightness
HDR peak brightness	1,000 nits	1,300 nits (better)
HDR certification
HDR certification	DisplayHDR True Black 400	DisplayHDR True Black 500
HDR formats
HDR formats	–	HDR10, Dolby Vision
Contrast ratio
Contrast ratio	1,500,000:1	1,500,000:1
Colour range
Colour range	99.3% DCI-P3	99% DCI-P3
DCI-P3 coverage
DCI-P3 coverage	99.3% (better)	99%
Colour accuracy (Delta E)
Colour accuracy (Delta E)	Below 2	Below 2
Screen finish
Screen finish	Glossy	Glossy
Shape
Shape	Curved (1800R)	Curved (1800R)
Adaptive sync
Adaptive sync	G-Sync Compatible, FreeSync Premium Pro, VESA AdaptiveSync, HDMI VRR	G-Sync Compatible, FreeSync Premium Pro, VESA AdaptiveSync, HDMI VRR
Subpixel layout
Subpixel layout	–	RGB stripe
Colour depth
Colour depth	1.07 billion colours	1.07 billion colours (10-bit)
Colour accuracy
Colour accuracy	Delta E < 2 (average) (sRGB, DCI-P3)	Delta E < 2 (average) (sRGB, DCI-P3)
Colour modes
Colour modes	Standard, Creator, FPS, MOBA/RTS, RPG, Sports, three custom game modes	Standard, Creator (DCI-P3 or sRGB), FPS, MOBA/RTS, RPG, Sports, three custom game modes
HDR detail
HDR detail	1000 cd/m² HDR peak at 3% APL	1300 cd/m² HDR peak at 3% APL; Smart HDR modes Desktop, Movie HDR, Game HDR, Custom Color HDR, DisplayHDR True Black (500 cd/m²), HDR Peak 1300 and HDR Peak 1300 Bright
Variable refresh range
Variable refresh range	48–240 Hz (vertical scan range)	48–280 Hz (vertical scan range)
Viewing angles
Viewing angles	178° horizontal, 178° vertical (typical)	178° horizontal, 178° vertical (typical)
Pixel pitch
Pixel pitch	0.2315 mm x 0.2315 mm	0.2315 mm x 0.2315 mm
Eye care
Eye care	ComfortView Plus hardware low blue light (TÜV Rheinland Hardware Solution); flicker-free	Hardware low blue light (TÜV Rheinland Hardware Solution); flicker-free
Burn-in protection
Burn-in protection	Dell gives its QD-OLED Alienware monitors a 3-year limited warranty that covers burn-in	Anti-burn-in algorithm, graphite heat-dispersion sheet, pixel refresh, pixel shift and panel health indicator; 3-year warranty includes burn-in
Connections
Video inputs
Video inputs	2 × HDMI 2.1, DisplayPort 1.4	2 × HDMI 2.1, DisplayPort 1.4
USB-C charging
USB-C charging	None	None
USB ports
USB ports	USB-C, USB-A	USB-C, USB-A
Ethernet
Ethernet	No	No
Speakers
Speakers	No	No
HDMI detail
HDMI detail	2 x HDMI 2.1 FRL (HDCP 1.4 & 2.3), up to 3440 x 1440 at 240 Hz with HDR and VRR	2 x HDMI 2.1 FRL (HDCP 1.4 & 2.3), up to 3440 x 1440 at 280 Hz with HDR, VRR and DSC; up to 3840 x 2160 at 120 Hz in Console Mode
DisplayPort detail
DisplayPort detail	1 x DisplayPort 1.4 (HDCP 1.4 & 2.3), up to 3440 x 1440 at 240 Hz with DSC and HDR	1 x DisplayPort 1.4 (HDCP 1.4 & 2.3), up to 3440 x 1440 at 280 Hz with DSC and HDR
USB-C detail
USB-C detail	1 x USB-C 5Gbps downstream port with 15 W charging (no video)	1 x USB-C 5Gbps downstream port with 15 W charging (data only, no video)
USB hub detail
USB hub detail	USB 5Gbps; 1 x Type-B upstream; 1 x Type-A downstream; 1 x USB-C downstream (15 W)	USB 5Gbps; 1 x Type-B upstream; 1 x Type-A downstream; 1 x USB-C downstream (15 W)
Picture by picture
Picture by picture	Picture by Picture and Picture in Picture	Picture by Picture and Picture in Picture
Design
Stand adjusts
Stand adjusts	Height, tilt, swivel	Height, tilt, swivel
VESA mount
VESA mount	Yes	Yes
Weight with stand
Weight with stand	8.14 kg	7.91 kg
Height adjustment
Height adjustment	110 mm	110 mm
Tilt
Tilt	-5° to 21°	-5° to 21°
Swivel
Swivel	-20° to 20°	-20° to 20°
VESA pattern
VESA pattern	100 x 100 mm	100 x 100 mm
Size with stand
Size with stand	814.15 x 232 x 445.08–555.08 mm (W x D x H)	814.15 x 232 x 445.08–555.08 mm (W x D x H)
Size without stand
Size without stand	814.15 x 111.23 x 361.55 mm (W x D x H)	814.15 x 111.23 x 361.55 mm (W x D x H)
Weight without stand
Weight without stand	5.09 kg	4.88 kg
Controls
Controls	Joystick	Joystick
Colours
Colours	–	Black
Power and support
Power use
Power use	31.0 W on mode, 0.5 W standby, 0.3 W off, 190 W maximum	31.0 W on mode, 0.5 W standby, 0.3 W off, 190 W maximum
Energy class
Energy class	–	F
Power supply
Power supply	100–240 VAC, 50/60 Hz, 2.8 A (typical)	100–240 VAC, 50/60 Hz, 2.8 A (typical)
Software
Software	Alienware Command Center	Alienware Command Center
Warranty
Warranty	–	3 years limited hardware with Advanced Exchange Service and Premium Panel Exchange, including burn-in (UK)
In the box
In the box	Stand, power cable, HDMI 2.1 FRL cable (1.8 m), DisplayPort 1.4 cable (1.8 m), USB-A to USB-B 5Gbps cable (1.8 m), microfibre cloth	Stand, power cable, DisplayPort 1.4 cable (1.8 m), HDMI 2.1 FRL cable (1.8 m), USB-A to USB-B 5Gbps cable (1.8 m), microfibre cloth