LG UltraGear OLED GX7 (27GX790B) vs LG UltraGear OLED 34GX900A

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UltraGear OLED GX7 (27GX790B) compared with UltraGear OLED 34GX900A

	LGUltraGear OLED GX7 (27GX790B)	LGUltraGear OLED 34GX900A
Overview
Released
Released	March 2026	September 2025
Display
Screen size
Screen size	26.5″	34″
Resolution
Resolution	2560 × 1440 (QHD)	3440 × 1440 (UWQHD) (better)
Sharpness
Sharpness	111 pixels per inch (better)	110 pixels per inch
Panel
Panel	OLED (4th Gen Primary RGB Tandem OLED; Dual mode: 720p at 720 Hz)	OLED (LG Display WOLED with MLA+ (TFTCentral))
Refresh rate
Refresh rate	540 Hz (better)	240 Hz
Response time (grey to grey)
Response time (grey to grey)	0.02 ms (better)	0.03 ms
Brightness (typical)
Brightness (typical)	335 nits (better)	275 nits
HDR peak brightness
HDR peak brightness	1,500 nits (better)	1,300 nits
HDR certification
HDR certification	DisplayHDR True Black 500	DisplayHDR True Black 400
HDR formats
HDR formats	–	HDR10
Contrast ratio
Contrast ratio	–	1,500,000:1
Colour range
Colour range	99.5% DCI-P3	98.5% DCI-P3 (typical)
DCI-P3 coverage
DCI-P3 coverage	99.5% (better)	98.5%
Screen finish
Screen finish	Matte	–
Shape
Shape	Flat	Curved (800R)
Adaptive sync
Adaptive sync	–	FreeSync Premium Pro, G-Sync Compatible
Colour depth
Colour depth	1.07B colours	1.07 billion colours
Colour modes
Colour modes	–	Reader Mode, Colour Weakness mode
HDR detail
HDR detail	–	HDR10; VESA DisplayHDR True Black 400; 1,300 nits peak (TFTCentral, from LG)
Viewing angles
Viewing angles	178° horizontal, 178° vertical (CR ≥ 10)	178° / 178°
Pixel pitch
Pixel pitch	0.2292 × 0.2292 mm	0.231 × 0.231 mm
Eye care
Eye care	Reader Mode, Color Weakness mode	–
Calibration
Calibration	Factory calibrated; 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, USB-C	2 × HDMI 2.1, DisplayPort 1.4, USB-C
USB-C charging
USB-C charging	Up to 5 W	Up to 65 W (better)
USB ports
USB ports	2 × USB-A	2 × USB-A
Speakers
Speakers	–	Yes
HDMI detail
HDMI detail	–	2 × HDMI 2.1 (cable included)
DisplayPort detail
DisplayPort detail	–	DisplayPort 1.4 with DSC
USB-C detail
USB-C detail	–	USB-C with DisplayPort Alt Mode and 65 W power delivery
Ethernet
Ethernet	No	–
USB hub detail
USB hub detail	2 × USB 3.0 downstream, upstream via USB-C	2 × USB 3.0 downstream
Picture by picture
Picture by picture	–	PIP; 2-way PBP
Audio out
Audio out	4-pole headphone out (sound + mic)	4-pole headphone out (sound and mic)
Speaker detail
Speaker detail	–	2 × 7 W
Design
Stand adjusts
Stand adjusts	Height, tilt, swivel, pivot (better)	Height, tilt, swivel
VESA mount
VESA mount	Yes	Yes
Weight with stand
Weight with stand	6.8 kg	10.4 kg
VESA pattern
VESA pattern	100 × 100 mm	100 × 100 mm
Size with stand
Size with stand	605.2 × 527.6 × 220 mm (raised), 605.2 × 397.6 × 220 mm (lowered)	784.1 × 291.8 × 470.4–580.4 mm (W × D × H)
Size without stand
Size without stand	605.2 × 351.0 × 51.2 mm	784.1 × 167.1 × 358.3 mm (W × D × H)
Weight without stand
Weight without stand	4.3 kg	6.2 kg
Controls
Controls	–	User-defined key; auto input switch; dual controller; game features include Black Stabiliser, Dynamic Action Sync, Crosshair and FPS Counter
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 off
Power supply
Power supply	External adapter, 100–240 V AC, 50/60 Hz	External adapter, 100–240 V
Software
Software	LG Calibration Studio (True Color Pro), Dual Controller	–
In the box
In the box	HDMI 2.1 and DisplayPort 2.1 cables	HDMI 2.1 cable, USB-C cable, DisplayPort cable