LG UltraGear 27G850A-B vs LG UltraGear 27GL850-B

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UltraGear 27G850A-B compared with UltraGear 27GL850-B

	LGUltraGear 27G850A-B	LGUltraGear 27GL850-B
Overview
Released
Released	February 2025	July 2019
Display
Screen size
Screen size	27″	27″
Resolution
Resolution	3840 × 2160 (4K) (better)	2560 × 1440 (QHD)
Sharpness
Sharpness	163 pixels per inch (better)	109 pixels per inch
Panel
Panel	IPS (Nano IPS Black; dual mode switches to 1920 x 1080 at 480Hz)	IPS (Nano IPS)
Refresh rate
Refresh rate	240 Hz (better)	144 Hz
Response time (grey to grey)
Response time (grey to grey)	1 ms	1 ms
Brightness (typical)
Brightness (typical)	450 nits (better)	350 nits
HDR certification
HDR certification	DisplayHDR 600	–
HDR formats
HDR formats	HDR10	HDR10
Contrast ratio
Contrast ratio	2,000:1	1,000:1
Colour range
Colour range	99% DCI-P3 (CIE 1976)	98% DCI-P3 (CIE 1976)
DCI-P3 coverage
DCI-P3 coverage	99% (better)	98%
Shape
Shape	Flat	Flat
Adaptive sync
Adaptive sync	G-Sync Compatible, FreeSync Premium Pro, VESA AdaptiveSync	G-Sync Compatible, FreeSync
Colour depth
Colour depth	1.07 billion colours; 8-bit plus FRC (PCW and DisplayNinja)	1.07 billion colours; 8-bit plus FRC (TFTCentral)
sRGB coverage
sRGB coverage	–	135% sRGB (LG Korea)
Colour accuracy
Colour accuracy	–	Factory colour calibration
Colour modes
Colour modes	–	sRGB and Reader modes; Gamer, FPS and RTS presets (TFTCentral)
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 input support; no local dimming (TFTCentral)
Response time detail
Response time detail	1ms grey to grey in Faster mode	1ms grey to grey in Faster mode; LG warns this setting can cause visible trails and recommends Fast if they occur
Variable refresh range
Variable refresh range	–	48–144Hz over DisplayPort; 48–100Hz over HDMI with adaptive sync (TFTCentral)
Viewing angles
Viewing angles	178° horizontal and vertical, CR ≥ 10	178° horizontal and vertical, CR ≥ 10
Pixel pitch
Pixel pitch	0.1554 x 0.1554 mm	0.2331 x 0.2331 mm
Eye care
Eye care	Flicker Safe, Reader Mode and Live Color Low Blue Light with TÜV Rheinland Eyesafe certification	Flicker Safe and Reader Mode
Calibration
Calibration	Factory colour calibration and hardware calibration support	–
Connections
Video inputs
Video inputs	2 × HDMI 2.1, DisplayPort 2.1	2 × HDMI 2.0, 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 2.0; 2560 x 1440 at 144Hz with 8-bit colour in LG's specification; adaptive-sync operation has a lower maximum
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; 2560 x 1440 at 144Hz with 10-bit colour
USB hub detail
USB hub detail	USB 3.2 Gen 1; one USB-B upstream and two USB-A downstream ports	USB 3.0; one upstream and two downstream ports
Picture by picture
Picture by picture	No picture in picture or picture by picture	–
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 (better)	Height, tilt, pivot
VESA mount
VESA mount	Yes	Yes
Weight with stand
Weight with stand	9.4 kg	6.1 kg
Height adjustment
Height adjustment	110 mm	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 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)	614.2 x 274.4 x 464.8–574.8 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)	614.2 x 56.3 x 364.8 mm (W x D x H)
Weight without stand
Weight without stand	5.2 kg	4.2 kg
Controls
Controls	Rear joystick; user-defined shortcut key	–
Colours
Colours	Black with Unity Hexagon Lighting	Black with red trim
Power and support
Power use
Power use	44 W on mode (LG Korea); ≤ 0.5 W sleep; ≤ 0.3 W off	51 W on mode; 65 W maximum; ≤ 0.5 W sleep; ≤ 0.3 W off
Power supply
Power supply	External adapter; 100–240V, 50/60Hz	External adapter; 100–240V, 50/60Hz
Software
Software	LG Switch, LG Calibration Studio and Dual Controller	OnScreen Control
In the box
In the box	Adapter, power cable, HDMI cable, DisplayPort cable and USB A to B cable	Adapter, power cable, HDMI cable, DisplayPort cable and USB 3.0 upstream cable