LG UltraGear 27GL850-B vs LG UltraGear OLED GX7 (27GX790A)

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UltraGear 27GL850-B compared with UltraGear OLED GX7 (27GX790A)

	LGUltraGear 27GL850-B	LGUltraGear OLED GX7 (27GX790A)
Overview
Released
Released	July 2019	November 2024
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 (WOLED with Micro Lens Array+ (MLA+))
Refresh rate
Refresh rate	144 Hz	480 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)	275 nits
HDR peak brightness
HDR peak brightness	–	1,300 nits
HDR certification
HDR certification	–	DisplayHDR True Black 400
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)	98.5% DCI-P3 (CIE 1976)
DCI-P3 coverage
DCI-P3 coverage	98%	98.5% (better)
Screen finish
Screen finish	–	Matte
Shape
Shape	Flat	Flat
Adaptive sync
Adaptive sync	G-Sync Compatible, FreeSync	G-Sync Compatible, FreeSync Premium Pro
Colour depth
Colour depth	1.07 billion colours; 8-bit plus FRC (TFTCentral)	10-bit (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)	–
HDR detail
HDR detail	HDR10 input support; no local dimming (TFTCentral)	HDR10; 1,300 nits peak (APL 1.5%), 275 nits at APL 100%
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° horizontal, 178° vertical (CR ≥ 10)
Pixel pitch
Pixel pitch	0.2331 x 0.2331 mm	0.2292 x 0.2292 mm
Eye care
Eye care	Flicker Safe and Reader Mode	Reader Mode, Color Weakness mode
Calibration
Calibration	–	Factory calibrated (Delta E ≤ 2, paper report included); hardware calibration ready (LG Calibration Studio)
Connections
Video inputs
Video inputs	2 × HDMI 2.0, DisplayPort 1.4	2 × HDMI 2.1, DisplayPort 2.1
USB-C charging
USB-C charging	None	None
USB ports
USB ports	2 × USB-A	2 × USB-A
Ethernet
Ethernet	–	No
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	–
DisplayPort detail
DisplayPort detail	1 x DisplayPort 1.4; 2560 x 1440 at 144Hz with 10-bit colour	1 x DisplayPort 2.1 with DSC
USB hub detail
USB hub detail	USB 3.0; one upstream and two downstream ports	2 x USB 3.0 downstream, 1 x USB 3.0 upstream (USB-B)
Audio out
Audio out	Headphone output	4-pole headphone out (sound + 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	9.3 kg
Height adjustment
Height adjustment	110 mm	–
VESA pattern
VESA pattern	100 x 100 mm	100 x 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 x 579.3 x 249.1 mm (raised), 605.2 x 469.3 x 249.1 mm (lowered) (W x H x D)
Size without stand
Size without stand	614.2 x 56.3 x 364.8 mm (W x D x H)	605.2 x 351.0 x 45.3 mm (W x H x D)
Weight without stand
Weight without stand	4.2 kg	5.1 kg
Controls
Controls	–	User Defined Key, Dual Controller software
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 (DC off)
Power supply
Power supply	External adapter; 100–240V, 50/60Hz	External adapter, 100–240 V AC, 50/60 Hz; 19 V 7.37 A
Software
Software	OnScreen Control	LG Calibration Studio (True Color Pro), Dual Controller
In the box
In the box	Adapter, power cable, HDMI cable, DisplayPort cable and USB 3.0 upstream cable	Stand body and base, power adapter and cord, HDMI 2.1 cable (1.8 m), DisplayPort 2.1 cable, USB-A to B cable, calibration report