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Dell Alienware 25 320Hz (AW2525HM) vs Dell Alienware 34 240Hz QD-OLED (AW3425DW)

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

Better figure, where one is clearly better

DellAlienware 25 320Hz (AW2525HM)DellAlienware 34 240Hz QD-OLED (AW3425DW)
Overview
ReleasedJuly 2025April 2025
Display
Screen size24.5″34.2″
Resolution1920 × 1080 (Full HD)3440 × 1440 (UWQHD)
Sharpness90 pixels per inch109 pixels per inch
PanelIPS (Fast IPS)QD-OLED
Refresh rate320 Hz240 Hz
Response time (grey to grey)0.5 ms0.03 ms
Brightness (typical)400 nits250 nits
HDR peak brightness–1,000 nits
HDR certification–DisplayHDR True Black 400
Contrast ratio1,000:11,500,000:1
Colour range99% sRGB99.3% DCI-P3
DCI-P3 coverage–99.3%
Colour accuracy (Delta E)–Below 2
Screen finishMatteGlossy
ShapeFlatCurved (1800R)
Adaptive syncG-Sync Compatible, FreeSync Premium, VESA AdaptiveSync, HDMI VRRG-Sync Compatible, FreeSync Premium Pro, VESA AdaptiveSync, HDMI VRR
Colour depth16.7 million colours1.07 billion colours
Colour accuracy–Delta E < 2 (average) (sRGB, DCI-P3)
sRGB coverage99%–
Colour modesFPS, MOBA/RTS, RPG, Sports, three custom game modesStandard, Creator, FPS, MOBA/RTS, RPG, Sports, three custom game modes
HDR detail–1000 cd/m² HDR peak at 3% APL
Response time detail0.5 ms grey-to-grey minimum, 1 ms typical (Extreme)–
Variable refresh range48–320 Hz over DisplayPort; 48–255 Hz over HDMI (vertical scan range)48–240 Hz (vertical scan range)
Viewing angles178° horizontal, 178° vertical (typical)178° horizontal, 178° vertical (typical)
Pixel pitch0.2829 mm x 0.2802 mm (90 ppi)0.2315 mm x 0.2315 mm
Eye careComfortView Plus hardware low blue light (TÜV Rheinland Category 3); flicker-freeComfortView Plus hardware low blue light (TÜV Rheinland Hardware Solution); flicker-free
Burn-in protection–Dell gives its QD-OLED Alienware monitors a 3-year limited warranty that covers burn-in
Connections
Video inputs2 × HDMI 2.1 (TMDS), DisplayPort 1.42 × HDMI 2.1, DisplayPort 1.4
USB-C chargingNoneNone
USB ports2 × USB-AUSB-C, USB-A
EthernetNoNo
SpeakersNoNo
HDMI detail2 x HDMI (HDCP 1.4 and 2.3), up to 1920 x 1080 at 255 Hz (TMDS) with HDR and VRR as specified in HDMI 2.12 x HDMI 2.1 FRL (HDCP 1.4 & 2.3), up to 3440 x 1440 at 240 Hz with HDR and VRR
DisplayPort detail1 x DisplayPort 1.4 (HDCP 1.4 and 2.3), up to 1920 x 1080 at 320 Hz with HDR1 x DisplayPort 1.4 (HDCP 1.4 & 2.3), up to 3440 x 1440 at 240 Hz with DSC and HDR
USB-C detail–1 x USB-C 5Gbps downstream port with 15 W charging (no video)
USB hub detailUSB 5Gbps; 1 x USB-B upstream; 2 x USB-A (one with BC1.2 charging)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
Design
Stand adjustsHeight, tilt, swivel, pivotHeight, tilt, swivel
VESA mountYesYes
Weight with stand6.07 kg8.14 kg
Height adjustment110 mm110 mm
Tilt-5° to 21°-5° to 21°
Swivel-20° to 20°-20° to 20°
Pivot-90° to 90°–
VESA pattern100 x 100 mm100 x 100 mm
Size with stand555.59 x 206 x 390.73–500.73 mm (W x D x H)814.15 x 232 x 445.08–555.08 mm (W x D x H)
Size without stand555.59 x 68.89 x 329.50 mm (W x D x H)814.15 x 111.23 x 361.55 mm (W x D x H)
Weight without stand3.69 kg5.09 kg
Controls–Joystick
ColoursDark blue–
Power and support
Power use18.1 W on mode, 0.5 W standby, 0.3 W off, 65 W maximum31.0 W on mode, 0.5 W standby, 0.3 W off, 190 W maximum
Energy classE–
Power supply100–240 VAC, 50/60 Hz, 1.5 A (typical)100–240 VAC, 50/60 Hz, 2.8 A (typical)
Software–Alienware Command Center
CertificationsNVIDIA G-SYNC Compatible, AMD FreeSync Premium, VESA AdaptiveSync Display, TÜV Rheinland hardware low blue light (Category 3)–
Warranty3 years limited hardware with Advanced Exchange Service (UK)–
In the boxStand, power cable, DisplayPort 1.4 cable (1.8 m), HDMI 2.1 TMDS cable (1.8 m), USB-A to USB-B 5Gbps cable (1.8 m), Alienware stickerStand, 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

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