Dell Alienware 34 Curved QD-OLED (AW3423DW) vs Dell Alienware 34 240Hz QD-OLED (AW3425DW)

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Alienware 34 Curved QD-OLED (AW3423DW) compared with Alienware 34 240Hz QD-OLED (AW3425DW)

	DellAlienware 34 Curved QD-OLED (AW3423DW)	DellAlienware 34 240Hz QD-OLED (AW3425DW)
Overview
Released
Released	2022	April 2025
Display
Screen size
Screen size	34.18″	34.2″
Resolution
Resolution	3440 × 1440 (UWQHD)	3440 × 1440 (UWQHD)
Sharpness
Sharpness	109 pixels per inch	109 pixels per inch
Panel
Panel	QD-OLED	QD-OLED
Refresh rate
Refresh rate	175 Hz	240 Hz (better)
Response time (grey to grey)
Response time (grey to grey)	0.1 ms	0.03 ms (better)
Brightness (typical)
Brightness (typical)	250 nits	250 nits
HDR peak brightness
HDR peak brightness	1,000 nits	1,000 nits
HDR certification
HDR certification	DisplayHDR True Black 400	DisplayHDR True Black 400
Contrast ratio
Contrast ratio	1,000,000:1	1,500,000:1
Colour range
Colour range	99.3% DCI-P3	99.3% DCI-P3
DCI-P3 coverage
DCI-P3 coverage	99.3%	99.3%
Colour accuracy (Delta E)
Colour accuracy (Delta E)	–	Below 2
Screen finish
Screen finish	–	Glossy
Shape
Shape	Curved (1800R)	Curved (1800R)
Adaptive sync
Adaptive sync	G-Sync	G-Sync Compatible, FreeSync Premium Pro, VESA AdaptiveSync, HDMI VRR
Subpixel layout
Subpixel layout	Triangular RGB arrangement (TFTCentral)	–
Colour depth
Colour depth	1.07 billion colours up to 144Hz; 16.7 million colours at 175Hz	1.07 billion colours
Colour accuracy
Colour accuracy	–	Delta E < 2 (average) (sRGB, DCI-P3)
sRGB coverage
sRGB coverage	149% sRGB (maker stated gamut)	–
Colour modes
Colour modes	Creator mode offers sRGB and DCI-P3 presets (TFTCentral)	Standard, Creator, FPS, MOBA/RTS, RPG, Sports, three custom game modes
HDR detail
HDR detail	DisplayHDR True Black 400; HDR Peak 1000 mode; per-pixel light control	1000 cd/m² HDR peak at 3% APL
Variable refresh range
Variable refresh range	–	48–240 Hz (vertical scan range)
Response time detail
Response time detail	Maker's 0.1ms figure is grey to grey	–
Viewing angles
Viewing angles	178° horizontal and vertical	178° horizontal, 178° vertical (typical)
Pixel pitch
Pixel pitch	0.23 mm	0.2315 mm x 0.2315 mm
Eye care
Eye care	ComfortView Plus hardware low blue light, TÜV Rheinland certified; ambient light sensor	ComfortView Plus hardware low blue light (TÜV Rheinland Hardware Solution); flicker-free
Burn-in protection
Burn-in protection	Pixel shifting, pixel refresh and panel refresh (TFTCentral); three-year maker warranty includes OLED burn-in	Dell gives its QD-OLED Alienware monitors a 3-year limited warranty that covers burn-in
Connections
Video inputs
Video inputs	2 × HDMI 2.0, DisplayPort 1.4	2 × HDMI 2.1, DisplayPort 1.4
USB-C charging
USB-C charging	None	None
USB ports
USB ports	4 × USB-A	USB-C, USB-A
Ethernet
Ethernet	–	No
Speakers
Speakers	No	No
HDMI detail
HDMI detail	2 x HDMI 2.0; up to 3440 x 1440 at 100Hz	2 x HDMI 2.1 FRL (HDCP 1.4 & 2.3), up to 3440 x 1440 at 240 Hz with HDR and VRR
DisplayPort detail
DisplayPort detail	1 x DisplayPort 1.4; up to 3440 x 1440 at 175Hz	1 x DisplayPort 1.4 (HDCP 1.4 & 2.3), up to 3440 x 1440 at 240 Hz with DSC and HDR
USB-C detail
USB-C detail	–	1 x USB-C 5Gbps downstream port with 15 W charging (no video)
USB hub detail
USB hub detail	USB 3.2 Gen 1, 5Gbps; one USB-B upstream and four USB-A downstream, including one front-bottom BC 1.2 charging port at up to 2A	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
Audio out
Audio out	Rear line output and bottom headphone output	–
Design
Stand adjusts
Stand adjusts	Height, tilt, swivel	Height, tilt, swivel
VESA mount
VESA mount	Yes	Yes
Weight with stand
Weight with stand	10.37 kg	8.14 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	815.25 x 305.71 x 415.57 mm (W x D x H, lowest position)	814.15 x 232 x 445.08–555.08 mm (W x D x H)
Size without stand
Size without stand	815.25 x 137.11 x 364.15 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	6.92 kg	5.09 kg
Controls
Controls	Joystick (TFTCentral); AlienFX lighting	Joystick
Power and support
Power use
Power use	42.3 W on mode; 200 W maximum; 0.5 W standby; 0.3 W off	31.0 W on mode, 0.5 W standby, 0.3 W off, 190 W maximum
Power supply
Power supply	100–240 VAC, 50/60Hz	100–240 VAC, 50/60 Hz, 2.8 A (typical)
Software
Software	–	Alienware Command Center
Warranty
Warranty	Three-year Advanced Exchange Service and Premium Panel Exchange, including OLED burn-in	–
In the box
In the box	DisplayPort cable, Mini DisplayPort-to-DisplayPort cable, HDMI cable and USB upstream cable	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