LG UltraGear 27GL850-B vs LG UltraGear OLED 27GX700A

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UltraGear 27GL850-B compared with UltraGear OLED 27GX700A

	LGUltraGear 27GL850-B	LGUltraGear OLED 27GX700A
Overview
Released
Released	July 2019	August 2025
Display
Screen size
Screen size	27″	26.5″
Resolution
Resolution	2560 × 1440 (QHD)	2560 × 1440 (QHD)
Sharpness
Sharpness	109 pixels per inch	111 pixels per inch (better)
Panel
Panel	IPS (Nano IPS)	OLED (LG Display fourth-generation Primary RGB Tandem WOLED)
Refresh rate
Refresh rate	144 Hz	280 Hz (better)
Response time (grey to grey)
Response time (grey to grey)	1 ms	0.03 ms (better)
Brightness (typical)
Brightness (typical)	350 nits (better)	335 nits
HDR peak brightness
HDR peak brightness	–	1,500 nits
HDR certification
HDR certification	–	DisplayHDR True Black 500
HDR formats
HDR formats	HDR10	HDR10
Contrast ratio
Contrast ratio	1,000:1	1,500,000:1
Colour range
Colour range	98% DCI-P3 (CIE 1976)	99.5% DCI-P3 (typical)
DCI-P3 coverage
DCI-P3 coverage	98%	99.5% (better)
Shape
Shape	Flat	Flat
Adaptive sync
Adaptive sync	G-Sync Compatible, FreeSync	FreeSync Premium Pro, G-Sync Compatible
Colour depth
Colour depth	1.07 billion colours; 8-bit plus FRC (TFTCentral)	1.07 billion colours
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)	Reader Mode, Colour Weakness mode; HDR Effect
HDR detail
HDR detail	HDR10 input support; no local dimming (TFTCentral)	HDR10; VESA DisplayHDR True Black 500; 1,500 nits peak at 1.5% APL (TFTCentral, from LG)
Response time detail
Response time detail	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° / 178°
Pixel pitch
Pixel pitch	0.2331 x 0.2331 mm	0.2292 × 0.2292 mm
Calibration
Calibration	–	Factory calibrated; hardware calibration ready (LG Calibration Studio)
Eye care
Eye care	Flicker Safe and Reader Mode	–
Connections
Video inputs
Video inputs	2 × HDMI 2.0, DisplayPort 1.4	2 × HDMI 2.1, DisplayPort 1.4
USB-C charging
USB-C charging	None	None
USB ports
USB ports	2 × USB-A	USB-A
Speakers
Speakers	No	No
HDMI detail
HDMI detail	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	2 × HDMI 2.1 (cable included)
DisplayPort detail
DisplayPort detail	1 x DisplayPort 1.4; 2560 x 1440 at 144Hz with 10-bit colour	DisplayPort 1.4
USB hub detail
USB hub detail	USB 3.0; one upstream and two downstream ports	1 × USB 3.0 upstream (USB-B), 1 × USB 3.0 downstream
Audio out
Audio out	Headphone output	4-pole headphone out (sound and mic), DTS Headphone:X
Design
Stand adjusts
Stand adjusts	Height, tilt, pivot	Height, tilt, swivel, pivot (better)
VESA mount
VESA mount	Yes	Yes
Weight with stand
Weight with stand	6.1 kg	9 kg
Height adjustment
Height adjustment	110 mm	–
VESA pattern
VESA pattern	100 x 100 mm	100 × 100 mm
Size with stand
Size with stand	614.2 x 274.4 x 464.8–574.8 mm (W x D x H)	605.2 × 249.1 × 469.3–579.3 mm (W × D × H)
Size without stand
Size without stand	614.2 x 56.3 x 364.8 mm (W x D x H)	605.2 × 45.3 × 351.0 mm (W × D × H)
Weight without stand
Weight without stand	4.2 kg	4.8 kg
Controls
Controls	–	User-defined key; auto input switch; game features include Black Stabiliser, Dynamic Action Sync, Crosshair and FPS Counter; Hexagon Lighting RGB LEDs
Colours
Colours	Black with red trim	–
Power and support
Power use
Power use	51 W on mode; 65 W maximum; ≤ 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, 100–240 V
Software
Software	OnScreen Control	–
In the box
In the box	Adapter, power cable, HDMI cable, DisplayPort cable and USB 3.0 upstream cable	HDMI 2.1 cable, DisplayPort cable, USB A-to-B cable