Acer Predator X27U F5 vs LG UltraGear OLED GX7 (27GX790B)

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Predator X27U F5 compared with UltraGear OLED GX7 (27GX790B)

	AcerPredator X27U F5	LGUltraGear OLED GX7 (27GX790B)
Overview
Released
Released	August 2025	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	QD-OLED	OLED (4th Gen Primary RGB Tandem OLED; Dual mode: 720p at 720 Hz)
Refresh rate
Refresh rate	500 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)	300 nits	335 nits (better)
HDR peak brightness
HDR peak brightness	1,000 nits	1,500 nits (better)
HDR certification
HDR certification	DisplayHDR True Black 500	DisplayHDR True Black 500
Contrast ratio
Contrast ratio	1,500,000:1	–
Colour range
Colour range	99% DCI-P3	99.5% DCI-P3
DCI-P3 coverage
DCI-P3 coverage	99%	99.5% (better)
Screen finish
Screen finish	Glossy	Matte
Shape
Shape	Flat	Flat
Adaptive sync
Adaptive sync	FreeSync Premium Pro	–
Colour depth
Colour depth	10-bit (1.07 billion colours)	1.07B colours
Colour accuracy
Colour accuracy	Delta E < 2	–
HDR detail
HDR detail	1,000-nit peak measured on a 3% window	–
Viewing angles
Viewing angles	178° (H), 178° (V)	178° horizontal, 178° vertical (CR ≥ 10)
Pixel pitch
Pixel pitch	–	0.2292 × 0.2292 mm
Eye care
Eye care	–	Reader Mode, Color Weakness mode
Calibration
Calibration	–	Factory calibrated; hardware calibration ready (LG Calibration Studio)
Connections
Video inputs
Video inputs	2 × HDMI 2.1, 2 × DisplayPort 1.4, USB-C	2 × HDMI 2.1, DisplayPort 2.1, USB-C
USB-C charging
USB-C charging	Up to 65 W (better)	Up to 5 W
USB ports
USB ports	2 × USB-A	2 × USB-A
KVM switch
KVM switch	Yes	–
Ethernet
Ethernet	No	No
Speakers
Speakers	Yes	–
HDMI detail
HDMI detail	2 × HDMI 2.1, 2560 × 1440 at 500 Hz	–
DisplayPort detail
DisplayPort detail	2 × DisplayPort 1.4, 2560 × 1440 at 500 Hz	–
USB-C detail
USB-C detail	2560 × 1440 at 500 Hz (DisplayPort Alt Mode), plus USB data	–
USB hub detail
USB hub detail	2 × USB 3.2 downstream (Type-A); USB-B and USB-C upstream	2 × USB 3.0 downstream, upstream via USB-C
Audio out
Audio out	3.5 mm audio out	4-pole headphone out (sound + mic)
Speaker detail
Speaker detail	2 × 5 W	–
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	–	6.8 kg
Height adjustment
Height adjustment	120 mm	–
Tilt
Tilt	−5° to 20°	–
Swivel
Swivel	±20°	–
Pivot
Pivot	±90°	–
VESA pattern
VESA pattern	75 × 75 mm	100 × 100 mm
Size with stand
Size with stand	–	605.2 × 527.6 × 220 mm (raised), 605.2 × 397.6 × 220 mm (lowered)
Size without stand
Size without stand	–	605.2 × 351.0 × 51.2 mm
Weight without stand
Weight without stand	–	4.3 kg
Power and support
Power use
Power use	31.3 W SDR and 53.2 W HDR on-mode (EU energy label); 0.5 W standby; 0.3 W off	Less than 0.5 W (sleep), less than 0.3 W (DC off)
Energy class
Energy class	G (SDR), G (HDR)	–
Power supply
Power supply	External (C5/C6 connector)	External adapter, 100–240 V AC, 50/60 Hz
Software
Software	–	LG Calibration Studio (True Color Pro), Dual Controller
In the box
In the box	–	HDMI 2.1 and DisplayPort 2.1 cables