Dell Alienware 39 5K OLED (AW3926QW) vs LG UltraGear OLED 45GX950A

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Alienware 39 5K OLED (AW3926QW) compared with UltraGear OLED 45GX950A

	DellAlienware 39 5K OLED (AW3926QW)	LGUltraGear OLED 45GX950A
Overview
Released
Released	June 2026	April 2025
Display
Screen size
Screen size	38.9″	44.5″
Resolution
Resolution	5120 × 2160 (5K2K)	5120 × 2160 (5K2K)
Sharpness
Sharpness	143 pixels per inch (better)	125 pixels per inch
Panel
Panel	OLED (Tandem WOLED with RGB stripe; dual mode 2560 x 1080 at 330 Hz)	OLED (LG Display WOLED with RGWB subpixels; dual mode 2560 × 1080 at 330 Hz (TFTCentral, from LG))
Refresh rate
Refresh rate	165 Hz	165 Hz
Response time (grey to grey)
Response time (grey to grey)	0.03 ms	0.03 ms
Brightness (typical)
Brightness (typical)	300 nits (better)	275 nits
HDR peak brightness
HDR peak brightness	1,300 nits	–
HDR certification
HDR certification	DisplayHDR True Black 500	DisplayHDR True Black 400
HDR formats
HDR formats	HDR10, Dolby Vision	HDR10
Contrast ratio
Contrast ratio	1,750,000:1	1,500,000:1
Colour range
Colour range	99% DCI-P3	98.5% DCI-P3 (typical)
DCI-P3 coverage
DCI-P3 coverage	99% (better)	98.5%
Colour accuracy (Delta E)
Colour accuracy (Delta E)	Below 2	–
Screen finish
Screen finish	Glossy	–
Shape
Shape	Curved (1500R)	Curved (800R)
Adaptive sync
Adaptive sync	G-Sync Compatible, FreeSync Premium Pro, VESA AdaptiveSync, HDMI VRR	FreeSync Premium Pro, G-Sync Compatible
Subpixel layout
Subpixel layout	RGB stripe	RGWB (TFTCentral)
Colour depth
Colour depth	1.07 billion colours (10-bit)	10-bit, 1.07 billion colours
Colour accuracy
Colour accuracy	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	Reader Mode, Colour Weakness mode; HDR Effect
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	HDR10; VESA DisplayHDR True Black 400
Viewing angles
Viewing angles	178° horizontal, 178° vertical (typical)	178° / 178°
Pixel pitch
Pixel pitch	0.1776 mm x 0.1776 mm	0.2035 × 0.2035 mm
Calibration
Calibration	–	Factory calibrated; hardware calibration ready (LG Calibration Studio)
Eye care
Eye care	Flicker-free	–
Burn-in protection
Burn-in protection	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 2.1, USB-C	2 × HDMI 2.1, DisplayPort 2.1, USB-C
USB-C charging
USB-C charging	Up to 90 W	Up to 90 W
USB ports
USB ports	USB-C, 2 × USB-A	2 × USB-A
KVM switch
KVM switch	Yes	–
Ethernet
Ethernet	No	–
Speakers
Speakers	No	Yes
HDMI detail
HDMI detail	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	2 × HDMI 2.1 (1.8 m cable included)
DisplayPort detail
DisplayPort detail	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	DisplayPort 2.1 with DSC (cable included)
USB-C detail
USB-C detail	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-C with video up to 5120 × 2160 at 165 Hz, data and 90 W power delivery; also the USB upstream port
USB hub detail
USB hub detail	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)	2 × USB 3.0 downstream
Picture by picture
Picture by picture	Picture by Picture and Picture in Picture	PIP; 2-way PBP
Audio out
Audio out	3.5 mm headphone jack; HDMI eARC/ARC	4-pole headphone out (sound and mic), DTS Headphone:X
Speaker detail
Speaker detail	–	2 × 10 W, Rich Bass
Design
Stand adjusts
Stand adjusts	Height, tilt, swivel	Height, tilt, swivel
VESA mount
VESA mount	Yes	Yes
Weight with stand
Weight with stand	11.22 kg	14 kg
Height adjustment
Height adjustment	110 mm	–
Tilt
Tilt	-5° to 21°	–
Swivel
Swivel	-20° to 20°	–
VESA pattern
VESA pattern	100 x 100 mm	100 × 100 mm
Size with stand
Size with stand	920.49 x 242.50 x 470.10–580.10 mm (W x D x H)	991.6 × 342 × 545.6–665.6 mm (W × D × H)
Size without stand
Size without stand	920.49 x 129.65 x 408.24 mm (W x D x H)	991.6 × 225.5 × 460.7 mm (W × D × H)
Weight without stand
Weight without stand	7.76 kg	9.4 kg
Controls
Controls	Joystick	4-way joystick; user-defined key; auto input switch; dual controller; Unity Hexagon Lighting
Colours
Colours	Nova Black	–
Power and support
Power use
Power use	40.3 W on mode, 0.5 W standby, 0.3 W off, 360 W maximum	Less than 0.5 W sleep, less than 0.3 W off
Energy class
Energy class	G	–
Power supply
Power supply	100–240 VAC, 50/60 Hz, 4 A (typical)	External adapter, 20 V / 18 A output, 100–240 V input
Software
Software	Alienware Command Center	–
Warranty
Warranty	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, 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	HDMI 2.1 cable, DisplayPort 2.1 cable, USB-C cable, power adapter and cord, mouse holder