LG UltraGear OLED GX7 (27GX790A) vs LG UltraGear OLED GX7 (27GX790B)

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UltraGear OLED GX7 (27GX790A) compared with UltraGear OLED GX7 (27GX790B)

	LGUltraGear OLED GX7 (27GX790A)	LGUltraGear OLED GX7 (27GX790B)
Overview
Released
Released	November 2024	March 2026
Display
Screen size
Screen size	26.5″	26.5″
Resolution
Resolution	2560 × 1440 (QHD)	2560 × 1440 (QHD)
Sharpness
Sharpness	111 pixels per inch	111 pixels per inch
Panel
Panel	OLED (WOLED with Micro Lens Array+ (MLA+))	OLED (4th Gen Primary RGB Tandem OLED; Dual mode: 720p at 720 Hz)
Refresh rate
Refresh rate	480 Hz	540 Hz (better)
Response time (grey to grey)
Response time (grey to grey)	0.03 ms	0.02 ms (better)
Brightness (typical)
Brightness (typical)	275 nits	335 nits (better)
HDR peak brightness
HDR peak brightness	1,300 nits	1,500 nits (better)
HDR certification
HDR certification	DisplayHDR True Black 400	DisplayHDR True Black 500
HDR formats
HDR formats	HDR10	–
Contrast ratio
Contrast ratio	1,500,000:1	–
Colour range
Colour range	98.5% DCI-P3 (CIE 1976)	99.5% DCI-P3
DCI-P3 coverage
DCI-P3 coverage	98.5%	99.5% (better)
Screen finish
Screen finish	Matte	Matte
Shape
Shape	Flat	Flat
Adaptive sync
Adaptive sync	G-Sync Compatible, FreeSync Premium Pro	–
Colour depth
Colour depth	10-bit (1.07 billion colours)	1.07B colours
HDR detail
HDR detail	HDR10; 1,300 nits peak (APL 1.5%), 275 nits at APL 100%	–
Viewing angles
Viewing angles	178° horizontal, 178° vertical (CR ≥ 10)	178° horizontal, 178° vertical (CR ≥ 10)
Pixel pitch
Pixel pitch	0.2292 x 0.2292 mm	0.2292 × 0.2292 mm
Eye care
Eye care	Reader Mode, Color Weakness mode	Reader Mode, Color Weakness mode
Calibration
Calibration	Factory calibrated (Delta E ≤ 2, paper report included); hardware calibration ready (LG Calibration Studio)	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	No
Speakers
Speakers	No	–
DisplayPort detail
DisplayPort detail	1 x DisplayPort 2.1 with DSC	–
USB hub detail
USB hub detail	2 x USB 3.0 downstream, 1 x USB 3.0 upstream (USB-B)	2 × USB 3.0 downstream, upstream via USB-C
Audio out
Audio out	4-pole headphone out (sound + mic), 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	9.3 kg	6.8 kg
VESA pattern
VESA pattern	100 x 100 mm	100 × 100 mm
Size with stand
Size with stand	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)	605.2 × 527.6 × 220 mm (raised), 605.2 × 397.6 × 220 mm (lowered)
Size without stand
Size without stand	605.2 x 351.0 x 45.3 mm (W x H x D)	605.2 × 351.0 × 51.2 mm
Weight without stand
Weight without stand	5.1 kg	4.3 kg
Controls
Controls	User Defined Key, Dual Controller software	–
Power and support
Power use
Power use	Less than 0.5 W (sleep), less than 0.3 W (DC off)	Less than 0.5 W (sleep), less than 0.3 W (DC off)
Power supply
Power supply	External adapter, 100–240 V AC, 50/60 Hz; 19 V 7.37 A	External adapter, 100–240 V AC, 50/60 Hz
Software
Software	LG Calibration Studio (True Color Pro), Dual Controller	LG Calibration Studio (True Color Pro), Dual Controller
In the box
In the box	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	HDMI 2.1 and DisplayPort 2.1 cables