LG UltraGear OLED GX7 (27GX790A) vs LG UltraGear OLED 34GX900A

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UltraGear OLED GX7 (27GX790A) compared with UltraGear OLED 34GX900A

	LGUltraGear OLED GX7 (27GX790A)	LGUltraGear OLED 34GX900A
Overview
Released
Released	November 2024	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 (WOLED with Micro Lens Array+ (MLA+))	OLED (LG Display WOLED with MLA+ (TFTCentral))
Refresh rate
Refresh rate	480 Hz (better)	240 Hz
Response time (grey to grey)
Response time (grey to grey)	0.03 ms	0.03 ms
Brightness (typical)
Brightness (typical)	275 nits	275 nits
HDR peak brightness
HDR peak brightness	1,300 nits	1,300 nits
HDR certification
HDR certification	DisplayHDR True Black 400	DisplayHDR True Black 400
HDR formats
HDR formats	HDR10	HDR10
Contrast ratio
Contrast ratio	1,500,000:1	1,500,000:1
Colour range
Colour range	98.5% DCI-P3 (CIE 1976)	98.5% DCI-P3 (typical)
DCI-P3 coverage
DCI-P3 coverage	98.5%	98.5%
Screen finish
Screen finish	Matte	–
Shape
Shape	Flat	Curved (800R)
Adaptive sync
Adaptive sync	G-Sync Compatible, FreeSync Premium Pro	FreeSync Premium Pro, G-Sync Compatible
Colour depth
Colour depth	10-bit (1.07 billion colours)	1.07 billion colours
Colour modes
Colour modes	–	Reader Mode, Colour Weakness mode
HDR detail
HDR detail	HDR10; 1,300 nits peak (APL 1.5%), 275 nits at APL 100%	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 x 0.2292 mm	0.231 × 0.231 mm
Eye care
Eye care	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 1.4, USB-C
USB-C charging
USB-C charging	None	Up to 65 W (better)
USB ports
USB ports	2 × USB-A	2 × USB-A
Ethernet
Ethernet	No	–
Speakers
Speakers	No	Yes
HDMI detail
HDMI detail	–	2 × HDMI 2.1 (cable included)
DisplayPort detail
DisplayPort detail	1 x DisplayPort 2.1 with DSC	DisplayPort 1.4 with DSC
USB-C detail
USB-C detail	–	USB-C with DisplayPort Alt Mode and 65 W power delivery
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
Picture by picture
Picture by picture	–	PIP; 2-way PBP
Audio out
Audio out	4-pole headphone out (sound + mic), DTS Headphone:X	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	9.3 kg	10.4 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)	784.1 × 291.8 × 470.4–580.4 mm (W × D × H)
Size without stand
Size without stand	605.2 x 351.0 x 45.3 mm (W x H x D)	784.1 × 167.1 × 358.3 mm (W × D × H)
Weight without stand
Weight without stand	5.1 kg	6.2 kg
Controls
Controls	User Defined Key, Dual Controller software	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; 19 V 7.37 A	External adapter, 100–240 V
Software
Software	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 cable, USB-C cable, DisplayPort cable