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Dell Alienware 27 240Hz QD-OLED (AW2726DM) 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 27 240Hz QD-OLED (AW2726DM)DellAlienware 34 240Hz (AW3426DWM)
Overview
ReleasedApril 2026July 2026
Display
Screen size26.5″34″
Resolution2560 × 1440 (QHD)3440 × 1440 (UWQHD)
Sharpness111 pixels per inch110 pixels per inch
PanelQD-OLEDVA
Refresh rate240 Hz240 Hz
Response time (grey to grey)0.03 ms1 ms
Brightness (typical)200 nits400 nits
HDR peak brightness400 nits450 nits
HDR certification–DisplayHDR 400
HDR formatsHDR10HDR10, Dolby Vision
Contrast ratio1,500,000:13,000:1
Colour range99% DCI-P395% DCI-P3
DCI-P3 coverage99%95%
Screen finishGlossyMatte
ShapeFlatCurved (1500R)
Adaptive syncFreeSync Premium, VESA AdaptiveSync, HDMI VRRFreeSync Premium, VESA AdaptiveSync, HDMI VRR
Colour depth1.07 billion colours1.07 billion colours (8-bit + FRC)
HDR detail400 cd/m² peak (Dell UK); HDR10; Smart HDR modes Desktop, Movie HDR and Game HDR450 cd/m² (typical) in HDR 400
Response time detail–1 ms (Extreme), 2 ms (Super Fast), 4 ms (Fast)
Variable refresh range48–240 Hz over DisplayPort; 48–120 Hz over HDMI (vertical scan range)48–240 Hz (vertical scan range)
Viewing angles178° horizontal, 178° vertical (typical)178° horizontal, 178° vertical (typical)
Pixel pitch0.2292 mm x 0.2292 mm0.23175 mm x 0.23175 mm
Eye careHardware low blue light (TÜV Rheinland Category 3); TÜV Rheinland Eye Comfort 3.0 (3 star); flicker-freeHardware low blue light (TÜV Rheinland Hardware Solution); flicker-free
Burn-in protectionPixel refresh and panel health indicator–
Connections
Video inputs2 × HDMI 2.1 (TMDS), DisplayPort 1.42 × HDMI 2.1, DisplayPort 1.4
USB-C chargingNoneNone
USB ports–USB-C, USB-A
EthernetNoNo
SpeakersNoNo
HDMI detail2 x HDMI (HDCP 1.4 & 2.3), up to 2560 x 1440 at 120 Hz with HDR and VRR as specified in HDMI 2.1 (TMDS)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 detail1 x DisplayPort 1.4 (HDCP 1.4 & 2.3), up to 2560 x 1440 at 240 Hz with HDR, DSC and AdaptiveSync1 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 detail–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 and Picture in Picture
Audio out3.5 mm headphone jackHDMI eARC/ARC
Design
Stand adjustsHeight, tilt, swivel, pivotHeight, tilt
VESA mountYesYes
Weight with stand5.9 kg9.76 kg
Height adjustment130 mm110 mm
Tilt-5° to 21°-5° to 21°
Swivel-360° to 360°–
Pivot-90° to 90°–
VESA pattern100 x 100 mm100 x 100 mm
Size with stand609.31 x 233.40 x 393.32–523.32 mm (W x D x H)805.45 x 232 x 444.69–554.69 mm (W x D x H)
Size without stand609.31 x 41.95 x 354.30 mm (W x D x H)805.45 x 132.46 x 360.85 mm (W x D x H)
Weight without stand3.90 kg6.80 kg
ColoursBlackBlack
Power and support
Power use21 W on mode, 0.3 W standby, 0.3 W off, 70 W maximum32 W on mode, 0.3 W standby, 0.3 W off, 100 W maximum
Energy classEG
Power supply100–240 VAC, 50/60 Hz, 1.5 A (maximum)100–240 VAC, 50/60 Hz, 1.5 A (typical)
Software–Alienware Command Center
CertificationsTÜV Rheinland Eye Comfort 3.0 (3 star), TÜV Rheinland hardware low blue light (Category 3)–
Warranty3 years limited hardware with Advanced Exchange Service and Premium Panel Exchange (UK)3 years with Advanced Exchange (UK)
In the boxStand, Allen key and four M4 screws, power cable, DisplayPort cable (1.8 m), HDMI cable (1.8 m)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)

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