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Dell Alienware 34 Curved QD-OLED (AW3423DW) vs Dell Alienware 34 240Hz (AW3426DWM)

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

Better figure, where one is clearly better

DellAlienware 34 Curved QD-OLED (AW3423DW)DellAlienware 34 240Hz (AW3426DWM)
Overview
Released2022July 2026
Display
Screen size34.18″34″
Resolution3440 × 1440 (UWQHD)3440 × 1440 (UWQHD)
Sharpness109 pixels per inch110 pixels per inch
PanelQD-OLEDVA
Refresh rate175 Hz240 Hz
Response time (grey to grey)0.1 ms1 ms
Brightness (typical)250 nits400 nits
HDR peak brightness1,000 nits450 nits
HDR certificationDisplayHDR True Black 400DisplayHDR 400
HDR formats–HDR10, Dolby Vision
Contrast ratio1,000,000:13,000:1
Colour range99.3% DCI-P395% DCI-P3
DCI-P3 coverage99.3%95%
Screen finish–Matte
ShapeCurved (1800R)Curved (1500R)
Adaptive syncG-SyncFreeSync Premium, VESA AdaptiveSync, HDMI VRR
Subpixel layoutTriangular RGB arrangement (TFTCentral)–
Colour depth1.07 billion colours up to 144Hz; 16.7 million colours at 175Hz1.07 billion colours (8-bit + FRC)
sRGB coverage149% sRGB (maker stated gamut)–
Colour modesCreator mode offers sRGB and DCI-P3 presets (TFTCentral)–
HDR detailDisplayHDR True Black 400; HDR Peak 1000 mode; per-pixel light control450 cd/m² (typical) in HDR 400
Response time detailMaker's 0.1ms figure is grey to grey1 ms (Extreme), 2 ms (Super Fast), 4 ms (Fast)
Variable refresh range–48–240 Hz (vertical scan range)
Viewing angles178° horizontal and vertical178° horizontal, 178° vertical (typical)
Pixel pitch0.23 mm0.23175 mm x 0.23175 mm
Eye careComfortView Plus hardware low blue light, TÜV Rheinland certified; ambient light sensorHardware low blue light (TÜV Rheinland Hardware Solution); flicker-free
Burn-in protectionPixel shifting, pixel refresh and panel refresh (TFTCentral); three-year maker warranty includes OLED burn-in–
Connections
Video inputs2 × HDMI 2.0, DisplayPort 1.42 × HDMI 2.1, DisplayPort 1.4
USB-C chargingNoneNone
USB ports4 × USB-AUSB-C, USB-A
Ethernet–No
SpeakersNoNo
HDMI detail2 x HDMI 2.0; up to 3440 x 1440 at 100Hz2 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 detail1 x DisplayPort 1.4; up to 3440 x 1440 at 175Hz1 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–1 x USB-C 5Gbps downstream port with 15 W charging (data only, no video)
USB hub detailUSB 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 2AUSB 5Gbps; 1 x Type-B upstream; 1 x Type-A downstream; 1 x USB-C downstream (15 W)
Picture by picture–Picture by Picture and Picture in Picture
Audio outRear line output and bottom headphone outputHDMI eARC/ARC
Design
Stand adjustsHeight, tilt, swivelHeight, tilt
VESA mountYesYes
Weight with stand10.37 kg9.76 kg
Height adjustment110 mm110 mm
Tilt-5° to 21°-5° to 21°
Swivel-20° to 20°–
VESA pattern100 x 100 mm100 x 100 mm
Size with stand815.25 x 305.71 x 415.57 mm (W x D x H, lowest position)805.45 x 232 x 444.69–554.69 mm (W x D x H)
Size without stand815.25 x 137.11 x 364.15 mm (W x D x H)805.45 x 132.46 x 360.85 mm (W x D x H)
Weight without stand6.92 kg6.80 kg
Colours–Black
ControlsJoystick (TFTCentral); AlienFX lighting–
Power and support
Power use42.3 W on mode; 200 W maximum; 0.5 W standby; 0.3 W off32 W on mode, 0.3 W standby, 0.3 W off, 100 W maximum
Energy class–G
Power supply100–240 VAC, 50/60Hz100–240 VAC, 50/60 Hz, 1.5 A (typical)
Software–Alienware Command Center
WarrantyThree-year Advanced Exchange Service and Premium Panel Exchange, including OLED burn-in3 years with Advanced Exchange (UK)
In the boxDisplayPort cable, Mini DisplayPort-to-DisplayPort cable, HDMI cable and USB upstream cableStand, 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)

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