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Compare LG Ultragear 27GX790B-B vs Acer Predator X27U X1bmiiphx

LG Ultragear 27GX790B-B and Acer Predator X27U X1bmiiphx are both monitors with the same Resolution (2560 x 1440), Aspect Ratio (16:9) and Viewing Angle (178° H x 178° V). The main differences are in Screen Size, Pixel Density, Dot Pitch and Panel Type.

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LG Ultragear 27GX790B-B

Acer Predator X27U X1bmiiphx

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Brand

LG

Brand

Acer

Model

27GX790B-B

Model

UM.GXXAA.101
X27U X1bmiiphx

Release Date

📅 December 2025

Release Date

📅 March 2025

* First availability for purchase, it may not correspond to the actual market launch date.

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Screen Size

27"

Screen Size

26.5"

Resolution

2560 x 1440

Resolution

2560 x 1440

Pixel Density

108.79 PPI

Pixel Density

110.84 PPI

Dot Pitch

0.23 mm

Dot Pitch

0.22 mm

Panel Type

WOLED Tandem

Panel Type

QD-OLED

Widescreen

Yes

Widescreen

Yes

Aspect Ratio

16:9

Aspect Ratio

16:9

Curved Screen

No

Curved Screen

No

Viewing Angle

178° H x 178° V

Viewing Angle

178° H x 178° V

Brightness

335 cd/m²

Brightness

1000 cd/m²

Response Time

0.02 ms

Response Time

0.03 ms

Refresh Rate

540 Hz

Refresh Rate

240 Hz

Built-in Speakers

No

Built-in Speakers

Yes

DVI

0

DVI

0

DisplayPort

1

DisplayPort

1

HDMI

2

HDMI

2

VGA

0

VGA

0

G-SYNC Support

Yes

G-SYNC Support

No

FreeSync Support

Yes

FreeSync Support

Yes

-

Options (2)

	QHD, USB-C 34-inch $799.00
	UHD 31.5-inch $448.28

Comparison and key differences summary

Reasons to buy the LG Ultragear 27GX790B-B:

Newer Product, it was released around 9 months later
Bigger screen size (+0.50")
Less response time (-0.01 ms)
Higher refresh rate (540 Hz)
Supports NVIDIA G-Sync

Reasons to buy the Acer Predator X27U X1bmiiphx:

1% cheaper, you can save $6.60
Better pixel density (110.84 PPI)
More brightness (+665 cd/m²)
Built-in speakers

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