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Dell Alienware 34 Curved QD-OLED (AW3423DWF) vs LG UltraGear OLED 34GX900A

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

Better figure, where one is clearly better

DellAlienware 34 Curved QD-OLED (AW3423DWF)LGUltraGear OLED 34GX900A
Overview
Released2022September 2025
Display
Screen size34.18″34″
Resolution3440 × 1440 (UWQHD)3440 × 1440 (UWQHD)
Sharpness109 pixels per inch110 pixels per inch
PanelQD-OLEDOLED (LG Display WOLED with MLA+ (TFTCentral))
Refresh rate165 Hz240 Hz
Response time (grey to grey)0.1 ms0.03 ms
Brightness (typical)250 nits275 nits
HDR peak brightness1,000 nits1,300 nits
HDR certificationDisplayHDR True Black 400DisplayHDR True Black 400
HDR formats–HDR10
Contrast ratio1,000,000:11,500,000:1
Colour range99.3% DCI-P398.5% DCI-P3 (typical)
DCI-P3 coverage99.3%98.5%
Colour accuracy (Delta E)Below 2–
ShapeCurved (1800R)Curved (800R)
Adaptive syncFreeSync Premium Pro, VESA AdaptiveSyncFreeSync Premium Pro, G-Sync Compatible
Subpixel layoutTriangular RGB arrangement (TechSpot)–
Colour depth1.07 billion colours1.07 billion colours
Colour modes–Reader Mode, Colour Weakness mode
sRGB coverage149% sRGB (maker stated gamut)–
Colour accuracyFactory calibration to Delta E < 2–
HDR detail250 cd/m² typical SDR and 1,000 cd/m² peak in Dell's US specifications; the UK table lists only the peak under brightnessHDR10; VESA DisplayHDR True Black 400; 1,300 nits peak (TFTCentral, from LG)
Response time detailMaker's 0.1ms figure is grey to grey–
Viewing angles178° horizontal and vertical178° / 178°
Pixel pitch0.23 mm0.231 × 0.231 mm
Calibration–Factory calibrated; hardware calibration ready (LG Calibration Studio)
Eye careComfortView Plus low blue light; flicker-free technology–
Burn-in protectionThree-year maker warranty includes OLED burn-in–
Connections
Video inputsHDMI 2.0, 2 × DisplayPort 1.42 × HDMI 2.1, DisplayPort 1.4, USB-C
USB-C chargingNoneUp to 65 W
USB ports4 × USB-A2 × USB-A
SpeakersNoYes
HDMI detail1 x HDMI 2.0; up to 3440 x 1440 at 100Hz2 × HDMI 2.1 (cable included)
DisplayPort detail2 x DisplayPort 1.4; up to 3440 x 1440 at 165HzDisplayPort 1.4 with DSC
USB-C detail–USB-C with DisplayPort Alt Mode and 65 W power delivery
USB hub detailUSB 3.2 Gen 1, 5Gbps; one upstream and four downstream ports; Dell's UK table lists two BC 1.2 charging ports, while its US page specifies one charging port at up to 2A2 × USB 3.0 downstream
Picture by picturePicture in Picture and Picture by PicturePIP; 2-way PBP
Audio outLine output and headphone output4-pole headphone out (sound and mic)
Speaker detail–2 × 7 W
Design
Stand adjustsHeight, tilt, swivelHeight, tilt, swivel
VESA mountYesYes
Weight with stand–10.4 kg
Height adjustment110 mm–
Tilt-5° to 21°–
Swivel-20° to 20°–
VESA pattern100 x 100 mm100 × 100 mm
Size with stand815.25 x 305.71 x 415.57 mm (W x D x H, lowest position, Dell UK)784.1 × 291.8 × 470.4–580.4 mm (W × D × H)
Size without stand815.25 x 127.11 x 364.15 mm (W x D x H)784.1 × 167.1 × 358.3 mm (W × D × H)
Weight without stand6.27 kg6.2 kg
Controls–User-defined key; auto input switch; dual controller; game features include Black Stabiliser, Dynamic Action Sync, Crosshair and FPS Counter
ColoursDark Side of the Moon–
Power and support
Power use34 W on mode; 200 W maximum; 0.5 W standby; 0.3 W offLess than 0.5 W sleep, less than 0.3 W off
Energy classG–
Power supply100–240 VAC, 50/60HzExternal adapter, 100–240 V
WarrantyThree-year Advanced Exchange Service and Premium Panel Exchange, including OLED burn-in–
In the boxDisplayPort cable, USB-C-to-DisplayPort cable and USB upstream cableHDMI 2.1 cable, USB-C cable, DisplayPort cable

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