ASUS ROG Strix OLED XG27UCDMG vs HP P34hc G4 Monitor Comparison

ASUS ROG Strix OLED XG27UCDMG and HP P34hc G4 are both monitors with the same Viewing Angle (178° H x 178° V) and DisplayPort (1). The main differences are in Screen Size, Resolution, Pixel Density and Dot Pitch.

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ASUS ROG Strix OLED XG27UCDMG	HP P34hc G4
Prices (Change region) In Stock $799.00 Last updated 26 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 $489.00 Out of Stock $549.99 In Stock Free shipping $579.00 In Stock + $5.99 Shipping $584.99 In Stock Free shipping $599.99 Show 2 more offers
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Brand ASUS	Brand HP
Model 90LM0B20-B01971 XG27UCDMG ROG Strix OLED XG27UCDMG 90LM0B20-B019B1	Model 21Y56AA#ABA
Release Date 📅 August 2025	Release Date 📅 February 2021
* 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 34"
Resolution 3840 x 2160	Resolution 3440 x 1440
Pixel Density 166.26 PPI	Pixel Density 109.68 PPI
Dot Pitch 0.15 mm	Dot Pitch 0.23 mm
Panel Type QD-OLED	Panel Type VA
Widescreen Yes	Widescreen Yes
Aspect Ratio 16:9	Aspect Ratio 21:9
Curved Screen No	Curved Screen Yes
Viewing Angle 178° H x 178° V	Viewing Angle 178° H x 178° V
Brightness 1000 cd/m²	Brightness 250 cd/m²
Contrast Ratio -	Contrast Ratio 3500:1
Response Time 0.03 ms	Response Time 5 ms
Refresh Rate 240 Hz	Refresh Rate 100 Hz
Built-in Speakers No	Built-in Speakers Yes
DVI 0	DVI 0
DisplayPort 1	DisplayPort 1
HDMI 2	HDMI 1
VGA 0	VGA 0
G-SYNC Support Yes	G-SYNC Support No
FreeSync Support Yes	FreeSync Support No