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Compare ASUS ROG Strix XG27AQM vs ROG Strix OLED XG27UCDMG

ASUS ROG Strix XG27AQM and ASUS ROG Strix OLED XG27UCDMG are both monitors with the same Aspect Ratio (16:9), Viewing Angle (178° H x 178° V) and HDMI (2). The main differences are in Screen Size, Resolution, Pixel Density and Dot Pitch.

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ASUS ROG Strix XG27AQM

ASUS ROG Strix OLED XG27UCDMG

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Brand

ASUS

Brand

ASUS

Model

XG27AQM
90LM06U5-B01370

Model

90LM0B20-B01971
XG27UCDMG
ROG Strix OLED XG27UCDMG
90LM0B20-B019B1

Release Date

📅 June 2021

Release Date

📅 August 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

3840 x 2160

Pixel Density

108.79 PPI

Pixel Density

166.26 PPI

Dot Pitch

0.23 mm

Dot Pitch

0.15 mm

Panel Type

IPS

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

400 cd/m²

Brightness

1000 cd/m²

Response Time

0.5 ms

Response Time

0.03 ms

Refresh Rate

270 Hz

Refresh Rate

240 Hz

Built-in Speakers

No

Built-in Speakers

No

DVI

0

DVI

0

DisplayPort

2

DisplayPort

1

HDMI

2

HDMI

2

VGA

0

VGA

0

G-SYNC Support

Yes

G-SYNC Support

Yes

FreeSync Support

Yes

FreeSync Support

Yes

Options (2)

	27” 4K DSC G-SYNC $529.99
	34" WQHD Fast IPS Curved 1ms 180Hz $399.99

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Comparison and key differences summary

Reasons to buy the ASUS ROG Strix XG27AQM:

Bigger screen size (+0.50")
Higher refresh rate (270 Hz)
+1 Display Port

Reasons to buy the ASUS ROG Strix OLED XG27UCDMG:

44% cheaper, you can save $634.13
Newer Product, it was released around 4 years later
Higher Screen Resolution (3840 x 2160 pixel)
Better pixel density (166.26 PPI)
More brightness (+600 cd/m²)
Less response time (-0.47 ms)

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