Acer R1 R221Q 21.5"Dell UltraSharp UP2516D 25"
Top 21%76 points
Top 21%
Top 32%65 points
Top 32%
Acer R1 R221Q 21.5"
Dell UltraSharp UP2516D 25"
vs
Top specs and features

Acer R1 R221Q 21.5" vs Dell UltraSharp UP2516D 25": 42 facts in comparison

1. every pixel has three subpixels

The device has a display with three full subpixels per pixel, resulting in a sharp and crisp picture. Pixels in some displays (like AMOLED) share one subpixel to preserve space. This can result in a less crisp, slightly blurred image.
Acer R1 R221Q 21.5"
Dell UltraSharp UP2516D 25"
85% have it

2. power consumption operation

How much power the device consumes when it's switched on.

3. screen size

The bigger the screen size is, the better the user experience.

4. has a HDMI output

Devices with a HDMI or mini HDMI port can transfer high definition video and audio to a display.
Acer R1 R221Q 21.5"
Dell UltraSharp UP2516D 25"
60% have it

5. contrast ratio

Contrast ratio is the visual distance between the lightest and the darkest colour that may be reproduced on the display. A high contrast ratio is desired, resulting in richer dark colours and more distinctive color gradation.

6. has anti-glare

Anti-glare helps to reduce the external reflections of light coming from outside the display.
Acer R1 R221Q 21.5"
Dell UltraSharp UP2516D 25"
27% have it

7. supports total tilt

Total tilt adjustment is the ability for the monitor head to move up and down. Tilt adjustment enables a user to change the viewing position of the display, creating a more comfortable view of the screen.
Acer R1 R221Q 21.5"
Dell UltraSharp UP2516D 25"
84% have it

8. weight

1.78kg lighter.

9. has a DVI connector

Devices that have a DVI connector (usually computers and notebooks) can be connected to the TV set.
Acer R1 R221Q 21.5"
Dell UltraSharp UP2516D 25"
56% have it

10. has an IPS screen

IPS (In-Plane Switching) is a technology used for LCDs. It was designed to overcome the main limitations of normal TFTs TN-matrices: relatively slow response times, small viewing angles and low quality color reproduction.
Acer R1 R221Q 21.5"
Dell UltraSharp UP2516D 25"
33% have it

11. power consumption on standby

How much power the device consumes when shut down but still plugged in.

12. luminance

Luminance is the intensity of light that a device emits.
300cd/m²

13. height

35.5mm shorter.

14. shipping weight

The shipping weight gives you the information about the all package weight.

15. resolution

43.75% higher resolution.
2560 x 1440px

16. has a VGA connector

VGA connector is a widespread connector and is found on many video cards, computer monitors, and some television sets.
Acer R1 R221Q 21.5"
Dell UltraSharp UP2516D 25"
76% have it

17. has stereo speakers

Devices with stereo speakers deliver sound that surrounds the user from left and right side, creating a richer sound and a better experience.
Acer R1 R221Q 21.5"
Dell UltraSharp UP2516D 25"
29% have it

18. supports swivel

Swivel is the ability for the monitor head to be rotated left or right. This enables users to share screen images without causing visual distortion.
Acer R1 R221Q 21.5"
Dell UltraSharp UP2516D 25"
34% have it

19. pixel density

12.82% higher pixel density.

20. width

69.6mm narrower.

21. thickness

23.3mm thinner.
200.7mm

22. has LED-backlit display

Uses LED backlighting, resulting in better image quality, more vibrant colours and richer blacks.
Acer R1 R221Q 21.5"
Dell UltraSharp UP2516D 25"
79% have it

23. displays 3D with glasses

The device displays 3D images which you can only see with special 3D glasses. Unlike glasses-free 3D displays, the screens of these devices have larger viewing angles.
Acer R1 R221Q 21.5"
Dell UltraSharp UP2516D 25"
4% have it

24. has DTS Surround

DTS Surround is a high-quality audio codec that supports up to six audio channels, with good bitrates and audio quality.
Acer R1 R221Q 21.5"
Dell UltraSharp UP2516D 25"
2% have it

25. Supports VESA mount

The VESA mount is a standard used by most manufacturers. A device that supports the VESA mount can be mounted on many different supports, from arms to wall mounts.
Acer R1 R221Q 21.5"
Dell UltraSharp UP2516D 25"
70% have it

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