Dell Alienware 34 280Hz QD-OLED (AW3426DW) vs Dell Alienware 39 5K OLED (AW3926QW)

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Alienware 34 280Hz QD-OLED (AW3426DW) compared with Alienware 39 5K OLED (AW3926QW)

	DellAlienware 34 280Hz QD-OLED (AW3426DW)	DellAlienware 39 5K OLED (AW3926QW)
Overview
Released
Released	June 2026	June 2026
Display
Screen size
Screen size	34″	38.9″
Resolution
Resolution	3440 × 1440 (UWQHD)	5120 × 2160 (5K2K) (better)
Sharpness
Sharpness	110 pixels per inch	143 pixels per inch (better)
Panel
Panel	QD-OLED (Penta Tandem QD-OLED)	OLED (Tandem WOLED with RGB stripe; dual mode 2560 x 1080 at 330 Hz)
Refresh rate
Refresh rate	280 Hz (better)	165 Hz
Response time (grey to grey)
Response time (grey to grey)	0.03 ms	0.03 ms
Brightness (typical)
Brightness (typical)	300 nits	300 nits
HDR peak brightness
HDR peak brightness	1,300 nits	1,300 nits
HDR certification
HDR certification	DisplayHDR True Black 500	DisplayHDR True Black 500
HDR formats
HDR formats	HDR10, Dolby Vision	HDR10, Dolby Vision
Contrast ratio
Contrast ratio	1,500,000:1	1,750,000:1
Colour range
Colour range	99% DCI-P3	99% DCI-P3
DCI-P3 coverage
DCI-P3 coverage	99%	99%
Colour accuracy (Delta E)
Colour accuracy (Delta E)	Below 2	Below 2
Screen finish
Screen finish	Glossy	Glossy
Shape
Shape	Curved (1800R)	Curved (1500R)
Adaptive sync
Adaptive sync	G-Sync Compatible, FreeSync Premium Pro, VESA AdaptiveSync, HDMI VRR	G-Sync Compatible, FreeSync Premium Pro, VESA AdaptiveSync, HDMI VRR
Subpixel layout
Subpixel layout	RGB stripe	RGB stripe
Colour depth
Colour depth	1.07 billion colours (10-bit)	1.07 billion colours (10-bit)
Colour accuracy
Colour accuracy	Delta E < 2 (average) (sRGB, DCI-P3)	Delta E < 2 (average) (sRGB, DCI-P3)
Colour modes
Colour modes	Standard, Creator (DCI-P3 or sRGB), FPS, MOBA/RTS, RPG, Sports, three custom game modes	Standard, Creator (DCI-P3 or sRGB), FPS, MOBA/RTS, RPG, Sports, three custom game modes
HDR detail
HDR detail	1300 cd/m² HDR peak at 3% APL; Smart HDR modes Desktop, Movie HDR, Game HDR, Custom Color HDR, DisplayHDR True Black (500 cd/m²), HDR Peak 1300 and HDR Peak 1300 Bright	1300 cd/m² HDR peak at 3% APL; Smart HDR modes Desktop, Movie HDR, Game HDR, Custom Color HDR, DisplayHDR True Black (500 cd/m²), HDR Peak 1300 and HDR Peak 1300 Bright
Variable refresh range
Variable refresh range	48–280 Hz (vertical scan range)	–
Viewing angles
Viewing angles	178° horizontal, 178° vertical (typical)	178° horizontal, 178° vertical (typical)
Pixel pitch
Pixel pitch	0.2315 mm x 0.2315 mm	0.1776 mm x 0.1776 mm
Eye care
Eye care	Hardware low blue light (TÜV Rheinland Hardware Solution); flicker-free	Flicker-free
Burn-in protection
Burn-in protection	Anti-burn-in algorithm, graphite heat-dispersion sheet, pixel refresh, pixel shift and panel health indicator; 3-year warranty includes burn-in	AI-based pixel usage algorithm, pixel refresh, pixel shift and panel health indicator; 3-year warranty includes burn-in
Connections
Video inputs
Video inputs	2 × HDMI 2.1, DisplayPort 1.4	2 × HDMI 2.1, DisplayPort 2.1, USB-C
USB-C charging
USB-C charging	None	Up to 90 W (better)
USB ports
USB ports	USB-C, USB-A	USB-C, 2 × USB-A
KVM switch
KVM switch	–	Yes
Ethernet
Ethernet	No	No
Speakers
Speakers	No	No
HDMI detail
HDMI detail	2 x HDMI 2.1 FRL (HDCP 1.4 & 2.3), up to 3440 x 1440 at 280 Hz with HDR, VRR and DSC; up to 3840 x 2160 at 120 Hz in Console Mode	2 x HDMI 2.1 FRL (HDCP 1.4 & 2.3), up to 5120 x 2160 at 165 Hz or 2560 x 1080 at 330 Hz with HDR and VRR; one with eARC/ARC audio pass-through
DisplayPort detail
DisplayPort detail	1 x DisplayPort 1.4 (HDCP 1.4 & 2.3), up to 3440 x 1440 at 280 Hz with DSC and HDR	1 x DisplayPort 2.1 UHBR20 (HDCP 1.4 & 2.3), up to 5120 x 2160 at 165 Hz or 2560 x 1080 at 330 Hz
USB-C detail
USB-C detail	1 x USB-C 5Gbps downstream port with 15 W charging (data only, no video)	USB-C upstream with DisplayPort 2.1 Alt Mode and Power Delivery up to 90 W; 1 x USB-C 5Gbps downstream with 15 W charging
USB hub detail
USB hub detail	USB 5Gbps; 1 x Type-B upstream; 1 x Type-A downstream; 1 x USB-C downstream (15 W)	USB 5Gbps; Type-B and USB-C upstream (KVM for two computers); 2 x Type-A downstream (one with BC 1.2 charging); 1 x USB-C downstream (15 W)
Picture by picture
Picture by picture	Picture by Picture and Picture in Picture	Picture by Picture and Picture in Picture
Audio out
Audio out	–	3.5 mm headphone jack; HDMI eARC/ARC
Design
Stand adjusts
Stand adjusts	Height, tilt, swivel	Height, tilt, swivel
VESA mount
VESA mount	Yes	Yes
Weight with stand
Weight with stand	7.91 kg	11.22 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	814.15 x 232 x 445.08–555.08 mm (W x D x H)	920.49 x 242.50 x 470.10–580.10 mm (W x D x H)
Size without stand
Size without stand	814.15 x 111.23 x 361.55 mm (W x D x H)	920.49 x 129.65 x 408.24 mm (W x D x H)
Weight without stand
Weight without stand	4.88 kg	7.76 kg
Controls
Controls	Joystick	Joystick
Colours
Colours	Black	Nova Black
Power and support
Power use
Power use	31.0 W on mode, 0.5 W standby, 0.3 W off, 190 W maximum	40.3 W on mode, 0.5 W standby, 0.3 W off, 360 W maximum
Energy class
Energy class	F	G
Power supply
Power supply	100–240 VAC, 50/60 Hz, 2.8 A (typical)	100–240 VAC, 50/60 Hz, 4 A (typical)
Software
Software	Alienware Command Center	Alienware Command Center
Warranty
Warranty	3 years limited hardware with Advanced Exchange Service and Premium Panel Exchange, including burn-in (UK)	3 years limited hardware with Advanced Exchange Service and Premium Panel Exchange, including burn-in (UK)
In the box
In the box	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), microfibre cloth	Stand, power cable, USB-C to USB-C 10Gbps 100 W cable (1 m), DisplayPort cable (1.8 m), HDMI 2.1 FRL cable (1.8 m), USB-A to USB-B cable (1.8 m), microfibre cloth