LG UltraGear 27G850A-B vs LG UltraGear OLED GX7 (27GX790B)

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UltraGear 27G850A-B compared with UltraGear OLED GX7 (27GX790B)

	LGUltraGear 27G850A-B	LGUltraGear OLED GX7 (27GX790B)
Overview
Released
Released	February 2025	March 2026
Display
Screen size
Screen size	27″	26.5″
Resolution
Resolution	3840 × 2160 (4K) (better)	2560 × 1440 (QHD)
Sharpness
Sharpness	163 pixels per inch (better)	111 pixels per inch
Panel
Panel	IPS (Nano IPS Black; dual mode switches to 1920 x 1080 at 480Hz)	OLED (4th Gen Primary RGB Tandem OLED; Dual mode: 720p at 720 Hz)
Refresh rate
Refresh rate	240 Hz	540 Hz (better)
Response time (grey to grey)
Response time (grey to grey)	1 ms	0.02 ms (better)
Brightness (typical)
Brightness (typical)	450 nits (better)	335 nits
HDR peak brightness
HDR peak brightness	–	1,500 nits
HDR certification
HDR certification	DisplayHDR 600	DisplayHDR True Black 500
HDR formats
HDR formats	HDR10	–
Contrast ratio
Contrast ratio	2,000:1	–
Colour range
Colour range	99% DCI-P3 (CIE 1976)	99.5% DCI-P3
DCI-P3 coverage
DCI-P3 coverage	99%	99.5% (better)
Screen finish
Screen finish	–	Matte
Shape
Shape	Flat	Flat
Adaptive sync
Adaptive sync	G-Sync Compatible, FreeSync Premium Pro, VESA AdaptiveSync	–
Colour depth
Colour depth	1.07 billion colours; 8-bit plus FRC (PCW and DisplayNinja)	1.07B 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	–
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, 178° vertical (CR ≥ 10)
Pixel pitch
Pixel pitch	0.1554 x 0.1554 mm	0.2292 × 0.2292 mm
Eye care
Eye care	Flicker Safe, Reader Mode and Live Color Low Blue Light with TÜV Rheinland Eyesafe certification	Reader Mode, Color Weakness mode
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 5 W (better)
USB ports
USB ports	2 × USB-A	2 × USB-A
Ethernet
Ethernet	–	No
Speakers
Speakers	No	–
HDMI detail
HDMI detail	2 x HDMI 2.1; 3840 x 2160 at 240Hz or 1920 x 1080 at 480Hz	–
DisplayPort detail
DisplayPort detail	1 x DisplayPort 2.1; 3840 x 2160 at 240Hz or 1920 x 1080 at 480Hz	–
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, upstream via USB-C
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	4-pole headphone out (sound + mic)
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	6.8 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)	605.2 × 527.6 × 220 mm (raised), 605.2 × 397.6 × 220 mm (lowered)
Size without stand
Size without stand	614.7 x 68.1 x 365.4 mm (W x D x H)	605.2 × 351.0 × 51.2 mm
Weight without stand
Weight without stand	5.2 kg	4.3 kg
Controls
Controls	Rear joystick; user-defined shortcut key	–
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 (DC off)
Power supply
Power supply	External adapter; 100–240V, 50/60Hz	External adapter, 100–240 V AC, 50/60 Hz
Software
Software	LG Switch, LG Calibration Studio and Dual Controller	LG Calibration Studio (True Color Pro), Dual Controller
In the box
In the box	Adapter, power cable, HDMI cable, DisplayPort cable and USB A to B cable	HDMI 2.1 and DisplayPort 2.1 cables