Learn more Dollar for dollar ... of Dell's S2721QS. 4K (3,840 x 2,160) on a 27-inch screen works out to 163 pixels per inch. That's double the pixel density of a 27-inch 1080p monitor, and ...

Right now, at Amazon, the Dell S2721QS is available for its lowest price to date—just $199 instead of its usual $299.