LG UltraGear 27G850A-B vs LG UltraGear OLED 45GX950A

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UltraGear 27G850A-B compared with UltraGear OLED 45GX950A

	LGUltraGear 27G850A-B	LGUltraGear OLED 45GX950A
Overview
Released
Released	February 2025	April 2025
Display
Screen size
Screen size	27″	44.5″
Resolution
Resolution	3840 × 2160 (4K)	5120 × 2160 (5K2K) (better)
Sharpness
Sharpness	163 pixels per inch (better)	125 pixels per inch
Panel
Panel	IPS (Nano IPS Black; dual mode switches to 1920 x 1080 at 480Hz)	OLED (LG Display WOLED with RGWB subpixels; dual mode 2560 × 1080 at 330 Hz (TFTCentral, from LG))
Refresh rate
Refresh rate	240 Hz (better)	165 Hz
Response time (grey to grey)
Response time (grey to grey)	1 ms	0.03 ms (better)
Brightness (typical)
Brightness (typical)	450 nits (better)	275 nits
HDR certification
HDR certification	DisplayHDR 600	DisplayHDR True Black 400
HDR formats
HDR formats	HDR10	HDR10
Contrast ratio
Contrast ratio	2,000:1	1,500,000:1
Colour range
Colour range	99% DCI-P3 (CIE 1976)	98.5% DCI-P3 (typical)
DCI-P3 coverage
DCI-P3 coverage	99% (better)	98.5%
Shape
Shape	Flat	Curved (800R)
Adaptive sync
Adaptive sync	G-Sync Compatible, FreeSync Premium Pro, VESA AdaptiveSync	FreeSync Premium Pro, G-Sync Compatible
Subpixel layout
Subpixel layout	–	RGWB (TFTCentral)
Colour depth
Colour depth	1.07 billion colours; 8-bit plus FRC (PCW and DisplayNinja)	10-bit, 1.07 billion colours
Colour modes
Colour modes	–	Reader Mode, Colour Weakness mode; HDR Effect
HDR detail
HDR detail	Eight dimming zones (PCW and DisplayNinja); LG Korea lists 750 nits typical peak brightness and 600 nits minimum peak brightness	HDR10; VESA DisplayHDR True Black 400
Response time detail
Response time detail	1ms grey to grey in Faster mode	–
Viewing angles
Viewing angles	178° horizontal and vertical, CR ≥ 10	178° / 178°
Pixel pitch
Pixel pitch	0.1554 x 0.1554 mm	0.2035 × 0.2035 mm
Eye care
Eye care	Flicker Safe, Reader Mode and Live Color Low Blue Light with TÜV Rheinland Eyesafe certification	–
Calibration
Calibration	Factory colour calibration and hardware calibration support	Factory calibrated; hardware calibration ready (LG Calibration Studio)
Connections
Video inputs
Video inputs	2 × HDMI 2.1, DisplayPort 2.1	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	2 × USB-A	2 × USB-A
Speakers
Speakers	No	Yes
HDMI detail
HDMI detail	2 x HDMI 2.1; 3840 x 2160 at 240Hz or 1920 x 1080 at 480Hz	2 × HDMI 2.1 (1.8 m cable included)
DisplayPort detail
DisplayPort detail	1 x DisplayPort 2.1; 3840 x 2160 at 240Hz or 1920 x 1080 at 480Hz	DisplayPort 2.1 with DSC (cable included)
USB-C detail
USB-C detail	–	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 3.2 Gen 1; one USB-B upstream and two USB-A downstream ports	2 × USB 3.0 downstream
Picture by picture
Picture by picture	No picture in picture or picture by picture	PIP; 2-way PBP
Audio out
Audio out	Four-pole headphone and microphone jack with DTS Headphone:X	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, pivot (better)	Height, tilt, swivel
VESA mount
VESA mount	Yes	Yes
Weight with stand
Weight with stand	9.4 kg	14 kg
Height adjustment
Height adjustment	110 mm	–
Tilt
Tilt	-8° to +15°	–
Swivel
Swivel	-30° to +30°	–
Pivot
Pivot	Counter-clockwise portrait rotation	–
VESA pattern
VESA pattern	100 x 100 mm	100 × 100 mm
Size with stand
Size with stand	614.7 x 249.1 x 471.8–581.8 mm (W x D x H)	991.6 × 342 × 545.6–665.6 mm (W × D × H)
Size without stand
Size without stand	614.7 x 68.1 x 365.4 mm (W x D x H)	991.6 × 225.5 × 460.7 mm (W × D × H)
Weight without stand
Weight without stand	5.2 kg	9.4 kg
Controls
Controls	Rear joystick; user-defined shortcut key	4-way joystick; user-defined key; auto input switch; dual controller; Unity Hexagon Lighting
Colours
Colours	Black with Unity Hexagon Lighting	–
Power and support
Power use
Power use	44 W on mode (LG Korea); ≤ 0.5 W sleep; ≤ 0.3 W off	Less than 0.5 W sleep, less than 0.3 W off
Power supply
Power supply	External adapter; 100–240V, 50/60Hz	External adapter, 20 V / 18 A output, 100–240 V input
Software
Software	LG Switch, LG Calibration Studio and Dual Controller	–
In the box
In the box	Adapter, power cable, HDMI cable, DisplayPort cable and USB A to B cable	HDMI 2.1 cable, DisplayPort 2.1 cable, USB-C cable, power adapter and cord, mouse holder