LG UltraGear 27G850A-B vs Samsung Odyssey OLED G8 G81SF 27-inch

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UltraGear 27G850A-B compared with Odyssey OLED G8 G81SF 27-inch

	LGUltraGear 27G850A-B	SamsungOdyssey OLED G8 G81SF 27-inch
Overview
Released
Released	February 2025	April 2025
Display
Screen size
Screen size	27″	27″
Resolution
Resolution	3840 × 2160 (4K)	3840 × 2160 (4K)
Sharpness
Sharpness	163 pixels per inch	163 pixels per inch
Panel
Panel	IPS (Nano IPS Black; dual mode switches to 1920 x 1080 at 480Hz)	QD-OLED
Refresh rate
Refresh rate	240 Hz	240 Hz
Response time (grey to grey)
Response time (grey to grey)	1 ms	0.03 ms (better)
Brightness (typical)
Brightness (typical)	450 nits (better)	250 nits
HDR certification
HDR certification	DisplayHDR 600	DisplayHDR True Black 400
HDR formats
HDR formats	HDR10	HDR10+ Gaming
Contrast ratio
Contrast ratio	2,000:1	1,000,000:1
Colour range
Colour range	99% DCI-P3 (CIE 1976)	99% DCI-P3 (CIE 1976)
DCI-P3 coverage
DCI-P3 coverage	99%	99%
Shape
Shape	Flat	Flat
Adaptive sync
Adaptive sync	G-Sync Compatible, FreeSync Premium Pro, VESA AdaptiveSync	FreeSync Premium Pro
Colour depth
Colour depth	1.07 billion colours; 8-bit plus FRC (PCW and DisplayNinja)	Up to 1 billion colours
HDR detail
HDR detail	Eight dimming zones (PCW and DisplayNinja); LG Korea lists 750 nits typical peak brightness and 600 nits minimum peak brightness	DisplayHDR True Black 400 and HDR10+ Gaming
Variable refresh range
Variable refresh range	–	Samsung's current UK specification confirms FreeSync Premium Pro but lists G-Sync as No; its March 2025 launch releases state NVIDIA G-SYNC Compatible support for G81SF
Response time detail
Response time detail	1ms grey to grey in Faster mode	–
Viewing angles
Viewing angles	178° horizontal and vertical, CR ≥ 10	178° horizontal and vertical
Pixel pitch
Pixel pitch	0.1554 x 0.1554 mm	–
Eye care
Eye care	Flicker Safe, Reader Mode and Live Color Low Blue Light with TÜV Rheinland Eyesafe certification	Eye Saver Mode, Flicker Free and UL-certified Glare Free coating
Burn-in protection
Burn-in protection	–	OLED Safeguard+ with pulsating heat pipe cooling; burn-in from normal use is covered within warranty, excluding commercial use, abuse and misuse
Calibration
Calibration	Factory colour calibration and hardware calibration support	Factory tuning with calibration report
Connections
Video inputs
Video inputs	2 × HDMI 2.1, DisplayPort 2.1	2 × HDMI 2.1, DisplayPort 1.4
USB-C charging
USB-C charging	None	None
USB ports
USB ports	2 × USB-A	2 × USB-A
Speakers
Speakers	No	No
HDMI detail
HDMI detail	2 x HDMI 2.1; 3840 x 2160 at 240Hz or 1920 x 1080 at 480Hz	2 x HDMI 2.1, HDCP 2.2
DisplayPort detail
DisplayPort detail	1 x DisplayPort 2.1; 3840 x 2160 at 240Hz or 1920 x 1080 at 480Hz	1 x DisplayPort 1.4, HDCP 2.2
USB hub detail
USB hub detail	USB 3.2 Gen 1; one USB-B upstream and two USB-A downstream ports	One USB-B upstream and two USB-A downstream ports; USB 3.2 Gen 1
Picture by picture
Picture by picture	No picture in picture or picture by picture	Picture in picture; no picture by picture (Stuff)
Audio out
Audio out	Four-pole headphone and microphone jack with DTS Headphone:X	Headphone output
Design
Stand adjusts
Stand adjusts	Height, tilt, swivel, pivot	Height, tilt, swivel, pivot
VESA mount
VESA mount	Yes	Yes
Weight with stand
Weight with stand	9.4 kg	6.9 kg
Height adjustment
Height adjustment	110 mm	120 mm, ± 5 mm tolerance
Tilt
Tilt	-8° to +15°	-2° to +25°
Swivel
Swivel	-30° to +30°	-30° to +30°
Pivot
Pivot	Counter-clockwise portrait rotation	-92° to +92°
VESA pattern
VESA pattern	100 x 100 mm	100 x 100 mm
Size with stand
Size with stand	614.7 x 249.1 x 471.8–581.8 mm (W x D x H)	611.7 x 263.5 x 554.2 mm (W x D x H)
Size without stand
Size without stand	614.7 x 68.1 x 365.4 mm (W x D x H)	611.7 x 49.2 x 353.8 mm (W x D x H)
Weight without stand
Weight without stand	5.2 kg	3.8 kg
Controls
Controls	Rear joystick; user-defined shortcut key	–
Colours
Colours	Black with Unity Hexagon Lighting	Silver with Core Lighting+
Power and support
Power use
Power use	44 W on mode (LG Korea); ≤ 0.5 W sleep; ≤ 0.3 W off	45 W typical; 140 W maximum; 0.5 W standby; 0.3 W off
Energy class
Energy class	–	G
Power supply
Power supply	External adapter; 100–240V, 50/60Hz	External adapter; AC 100–240V
Software
Software	LG Switch, LG Calibration Studio and Dual Controller	Monitor OSD; no Tizen smart services
In the box
In the box	Adapter, power cable, HDMI cable, DisplayPort cable and USB A to B cable	HDMI cable, DisplayPort cable and 1.5 m power cable