Alienware AW2521HF 24.5" vs ASUS ROG Strix OLED XG27UCDMG Monitor Comparison

Alienware AW2521HF 24.5" and ASUS ROG Strix OLED XG27UCDMG are both monitors with the same Aspect Ratio (16:9), Viewing Angle (178° H x 178° V) and Refresh Rate (240 Hz). The main differences are in Screen Size, Resolution, Pixel Density and Dot Pitch.

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Alienware AW2521HF 24.5"	ASUS ROG Strix OLED XG27UCDMG
Prices (Change region) Out of Stock $299.99 Out of Stock + $4.99 Shipping $338.99 Out of Stock Free shipping $349.99 Out of Stock Free shipping $379.99 Out of Stock $399.99 Out of Stock Free shipping $2,000.48 - Buy now Show 4 more offers	Prices (Change region) In Stock $799.00 Last updated 55 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
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Brand Alienware	Brand ASUS
Model AW2521HF	Model 90LM0B20-B01971 XG27UCDMG ROG Strix OLED XG27UCDMG 90LM0B20-B019B1
Release Date 📅 April 2020	Release Date 📅 August 2025
* 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 24.5"	Screen Size 26.5"
Resolution 1920 x 1080	Resolution 3840 x 2160
Pixel Density 89.91 PPI	Pixel Density 166.26 PPI
Dot Pitch 0.28 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 1 ms	Response Time 0.03 ms
Refresh Rate 240 Hz	Refresh Rate 240 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 Yes
FreeSync Support Yes	FreeSync Support Yes