Dell Alienware 34 280Hz QD-OLED (AW3426DW) vs Dell Alienware 34 240Hz (AW3426DWM)

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Alienware 34 280Hz QD-OLED (AW3426DW) compared with Alienware 34 240Hz (AW3426DWM)

	DellAlienware 34 280Hz QD-OLED (AW3426DW)	DellAlienware 34 240Hz (AW3426DWM)
Overview
Released
Released	June 2026	July 2026
Display
Screen size
Screen size	34″	34″
Resolution
Resolution	3440 × 1440 (UWQHD)	3440 × 1440 (UWQHD)
Sharpness
Sharpness	110 pixels per inch	110 pixels per inch
Panel
Panel	QD-OLED (Penta Tandem QD-OLED)	VA
Refresh rate
Refresh rate	280 Hz (better)	240 Hz
Response time (grey to grey)
Response time (grey to grey)	0.03 ms (better)	1 ms
Brightness (typical)
Brightness (typical)	300 nits	400 nits (better)
HDR peak brightness
HDR peak brightness	1,300 nits (better)	450 nits
HDR certification
HDR certification	DisplayHDR True Black 500	DisplayHDR 400
HDR formats
HDR formats	HDR10, Dolby Vision	HDR10, Dolby Vision
Contrast ratio
Contrast ratio	1,500,000:1	3,000:1
Colour range
Colour range	99% DCI-P3	95% DCI-P3
DCI-P3 coverage
DCI-P3 coverage	99% (better)	95%
Colour accuracy (Delta E)
Colour accuracy (Delta E)	Below 2	–
Screen finish
Screen finish	Glossy	Matte
Shape
Shape	Curved (1800R)	Curved (1500R)
Adaptive sync
Adaptive sync	G-Sync Compatible, FreeSync Premium Pro, VESA AdaptiveSync, HDMI VRR	FreeSync Premium, VESA AdaptiveSync, HDMI VRR
Subpixel layout
Subpixel layout	RGB stripe	–
Colour depth
Colour depth	1.07 billion colours (10-bit)	1.07 billion colours (8-bit + FRC)
Colour accuracy
Colour accuracy	Delta E < 2 (average) (sRGB, DCI-P3)	–
Colour modes
Colour modes	Standard, Creator (DCI-P3 or sRGB), FPS, MOBA/RTS, RPG, Sports, three custom game modes	–
HDR detail
HDR detail	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	450 cd/m² (typical) in HDR 400
Response time detail
Response time detail	–	1 ms (Extreme), 2 ms (Super Fast), 4 ms (Fast)
Variable refresh range
Variable refresh range	48–280 Hz (vertical scan range)	48–240 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	0.23175 mm x 0.23175 mm
Eye care
Eye care	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	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 280 Hz with HDR, VRR and DSC; up to 3840 x 2160 at 120 Hz in Console Mode	2 x HDMI 2.1 FRL (HDCP 1.4 & 2.3), up to 3440 x 1440 at 240 Hz with DSC, HDR and VRR; HDMI 1 has eARC/ARC
DisplayPort detail
DisplayPort detail	1 x DisplayPort 1.4 (HDCP 1.4 & 2.3), up to 3440 x 1440 at 280 Hz with DSC and HDR	1 x DisplayPort 1.4 (HDCP 1.4 & 2.3), up to 3440 x 1440 at 240 Hz with DSC, HDR and VRR
USB-C detail
USB-C detail	1 x USB-C 5Gbps downstream port with 15 W charging (data only, 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
Audio out
Audio out	–	HDMI eARC/ARC
Design
Stand adjusts
Stand adjusts	Height, tilt, swivel (better)	Height, tilt
VESA mount
VESA mount	Yes	Yes
Weight with stand
Weight with stand	7.91 kg	9.76 kg
Height adjustment
Height adjustment	110 mm	110 mm
Tilt
Tilt	-5° to 21°	-5° to 21°
Swivel
Swivel	-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)	805.45 x 232 x 444.69–554.69 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)	805.45 x 132.46 x 360.85 mm (W x D x H)
Weight without stand
Weight without stand	4.88 kg	6.80 kg
Controls
Controls	Joystick	–
Colours
Colours	Black	Black
Power and support
Power use
Power use	31.0 W on mode, 0.5 W standby, 0.3 W off, 190 W maximum	32 W on mode, 0.3 W standby, 0.3 W off, 100 W maximum
Energy class
Energy class	F	G
Power supply
Power supply	100–240 VAC, 50/60 Hz, 2.8 A (typical)	100–240 VAC, 50/60 Hz, 1.5 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)	3 years with Advanced Exchange (UK)
In the box
In the box	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	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)