Samsung U28D590D vs S27A400UJN Monitor Comparison

Samsung U28D590D and Samsung S27A400UJN are both monitors with the same Aspect Ratio (16:9). The main differences are in Screen Size, Resolution, Pixel Density and Dot Pitch.

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Samsung U28D590D	Samsung S27A400UJN
Prices (Change region) - Buy now	Prices (Change region) Out of Stock Free shipping $279.99 Out of Stock $279.99 Out of Stock Free shipping $279.99 Out of Stock + $4.99 Shipping $359.99 - Buy now Show 2 more offers
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Pangoly Score (How do we rate?) 80	Pangoly Score (How do we rate?) -
Brand Samsung	Brand SAMSUNG
Model U28D590D LU28D590DS/EN LU28D590DS/ZA	Model S27A400UJN
Release Date 📅 April 2014	Release Date 📅 March 2022
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews ★★★★☆ (414 reviews) Add a product review	User reviews Add a product review
Price history View Details ►	Price history View Details ►
Pros Very high definition Decent response time Good image quality following calibration	Pros -
Cons High input lag Limited viewing angles Gaming requires high-end hardware	Cons -
Screen Size 28"	Screen Size 27"
Resolution 3840 x 2160	Resolution 1920 x 1080
Pixel Density 157.35 PPI	Pixel Density 81.59 PPI
Dot Pitch 0.16 mm	Dot Pitch 0.31 mm
Panel Type TN	Panel Type IPS
Widescreen Yes	Widescreen Yes
Aspect Ratio 16:9	Aspect Ratio 16:9
Curved Screen No	Curved Screen No
Viewing Angle 170° H x 160° V	Viewing Angle -
Display Colors 1070000000	Display Colors -
Brightness 300 cd/m²	Brightness 250 cd/m²
Contrast Ratio 1000:1	Contrast Ratio -
Response Time 1 ms	Response Time 5 ms
Refresh Rate 60 Hz	Refresh Rate 75 Hz
Built-in Speakers No	Built-in Speakers No
DVI 0	DVI 0
DisplayPort 1	DisplayPort 0
HDMI 2	HDMI 1
VGA 0	VGA 0
G-SYNC Support No	G-SYNC Support No
FreeSync Support No	FreeSync Support Yes