ASUS ROG Strix OLED XG27UCDMG vs Samsung LU28E590DS Monitor Comparison

ASUS ROG Strix OLED XG27UCDMG and Samsung LU28E590DS are both monitors with the same Resolution (3840 x 2160), Aspect Ratio (16:9) and DisplayPort (1). The main differences are in Screen Size, Pixel Density, Dot Pitch and Panel Type.

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ASUS ROG Strix OLED XG27UCDMG	Samsung LU28E590DS
Prices (Change region) In Stock $799.00 Last updated 28 minutes ago. In Stock Free shipping $799.00 In Stock $849.99 In Stock $979.00 In Stock Free shipping $984.99 Show 2 more offers	Prices (Change region) Out of Stock Free shipping $507.99 - Buy now
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Brand ASUS	Brand Samsung
Model 90LM0B20-B01971 XG27UCDMG ROG Strix OLED XG27UCDMG 90LM0B20-B019B1	Model U28E590D LU28E590DS LU28E590DS/EN
Release Date 📅 August 2025	Release Date 📅 September 2017
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews Add a product review	User reviews Add a product review
Price history View Details ►	Price history View Details ►
Screen Size 26.5"	Screen Size 28"
Resolution 3840 x 2160	Resolution 3840 x 2160
Pixel Density 166.26 PPI	Pixel Density 157.35 PPI
Dot Pitch 0.15 mm	Dot Pitch 0.16 mm
Panel Type QD-OLED	Panel Type TN
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 170° H x 160° V
Brightness 1000 cd/m²	Brightness 370 cd/m²
Contrast Ratio -	Contrast Ratio DCR Mega Infinity
Response Time 0.03 ms	Response Time 1 ms
Refresh Rate 240 Hz	Refresh Rate 60 Hz
Built-in Speakers No	Built-in Speakers No
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 No
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