Comparison between:
- 28" Acer CB281HK
- 28" Samsung U28E850R
- 28" Acer B286HK
- 27" Dell UltraSharp U2719D
Brand, series, model
Information about the brand, series, model and model aliases.
| Acer CB281HK | Samsung U28E850R | Acer B286HK | Dell UltraSharp U2719D | |
| Series | - | - | - | UltraSharp |
 |  |  |  | |
| Model alias | CB281HKymjdpprz | LU28E85KRS | B286HKymjdpprz | - |
| Model year | 2015 | 2015 | 2014 | 2018 |
Display
Information about the main characteristics of the display - panel, backlight, resolution, refresh rate, etc.
| Size class | 28 in | 28 in | 28 in | 27 in |
| Diagonal | 711.2 mm 71.12 cm 28 in 2.3333 ft | 711.2 mm 71.12 cm 28 in 2.3333 ft | 711.2 mm 71.12 cm 28 in 2.3333 ft | 685.8 mm 68.58 cm 27 in 2.25 ft |
| Width | 620.93 mm 62.093 cm 24.4461 in 2.0372 ft | 620.928 mm 62.0928 cm 24.446 in 2.0372 ft | 620.93 mm 62.093 cm 24.4461 in 2.0372 ft | 596.736 mm 59.6736 cm 23.4935 in 1.9578 ft |
| Height | 341.28 mm 34.128 cm 13.4362 in 1.1197 ft | 341.28 mm 34.128 cm 13.4362 in 1.1197 ft | 341.28 mm 34.128 cm 13.4362 in 1.1197 ft | 335.664 mm 33.5664 cm 13.2151 in 1.1013 ft |
| Panel manufacturer | - | Innolux | Innolux | Samsung |
| Panel model | - | M280DGJ-L30 | - | W270HIAP1 (LTM270DL11) |
| Panel type | TN | TN | TN | PLS |
| Panel bit depth | 10 bits (8 bits + FRC) | 10 bits (8 bits + FRC) | 10 bits (8 bits + FRC) | 8 bits |
| FRC | Yes | Yes | Yes | No |
| Colors | 1073741824 colors 30 bits | 1073741824 colors 30 bits | 1073741824 colors 30 bits | 16777216 colors 24 bits |
| Aspect ratio | 1.778:1 16:9 | 1.778:1 16:9 | 1.778:1 16:9 | 1.778:1 16:9 |
| Resolution | 3840 x 2160 pixels Ultra HD (UHD) / 4K / 2160p | 3840 x 2160 pixels Ultra HD (UHD) / 4K / 2160p | 3840 x 2160 pixels Ultra HD (UHD) / 4K / 2160p | 2560 x 1440 pixels Quad HD (QHD) / 1440p |
| Pixel pitch | 0.162 mm 0.0162 cm 0.0064 in 0.0005 ft | 0.16 mm 0.016 cm 0.0063 in 0.0005 ft | 0.162 mm 0.0162 cm 0.0064 in 0.0005 ft | 0.233 mm 0.0233 cm 0.0092 in 0.0008 ft |
| Pixel density | 157 ppi 61 ppcm | 157 ppi 61 ppcm | 157 ppi 61 ppcm | 109 ppi 42 ppcm |
| Display area | 84.24 % | 83.38 % | 84.24 % | 92.16 % |
| Backlight | W-LED | W-LED | W-LED | W-LED |
| sRGB | 100 % | - | - | 99 % |
| Adobe RGB (1998) | - | - | - | 73 % |
| NTSC (1953) | - | 72 % | 72 % | - |
| DCI P3 | - | - | - | 85 % |
| Brightness | 300 cd/m² | 370 cd/m² | 300 cd/m² | 350 cd/m² |
| Static contrast | 1000 : 1 | 1000 : 1 | 1000 : 1 | 1000 : 1 |
| Dynamic contrast | 100000000 : 1 | - | 100000000 : 1 | - |
| Horizontal viewing angle | 170 ° | 170 ° | 170 ° | 178 ° |
| Vertical viewing angle | 160 ° | 160 ° | 160 ° | 178 ° |
| Minimum response time | 1 ms 0.0010 s | 1 ms 0.0010 s | 1 ms 0.0010 s | 5 ms 0.0050 s |
| Average response time | - | - | - | 8 ms 0.0080 s |
| Maximum response time | - | - | - | 15 ms 0.0150 s |
| Input lag | - | - | 11 ms 0.0110 s | 6 ms 0.0060 s |
| Coating | Anti-glare/Matte (3H) | - | Anti-glare/Matte (3H) | Anti-glare/Matte (3H) |
3D
3D displays use various technologies to achieve a 3D effect. Each of these technologies has its own advantages and drawbacks.
| 3D | No | No | No | No |
Frequencies
Information about the horizontal and vertical refresh rates/frequencies.
| Horizontal frequency (digital) | - | 30 kHz - 135 kHz | - | 30 kHz - 90 kHz |
| Vertical frequency (digital) | 60 Hz | 24 Hz - 75 Hz | 60 Hz | 56 Hz - 76 Hz |
| - | DisplayPort - 30 kHz - 135 kHz; 56 Hz - 75 Hz HDMI 1 - 30 kHz - 90 kHz; 24 Hz - 75 Hz HDMI 2 - 30 kHz - 135 kHz; 24 Hz - 75 Hz DisplayPort - 3840 x 2160 @ 60 Hz HDMI 1 - 3840 x 2160 @ 30 Hz HDMI 2 - 3840 x 2160 @ 60 Hz | - | - |
Power supply and consumption
Information about the power supply and consumption, energy efficiency class, etc.
| 110V | 100 V - 120 V | 100 V - 120 V | 100 V - 120 V | 100 V - 120 V |
| 220V | 220 V - 240 V | 220 V - 240 V | 220 V - 240 V | 220 V - 240 V |
| Alternating current frequency | 50 Hz - 60 Hz | 50 Hz - 60 Hz | 50 Hz - 60 Hz | 50 Hz - 60 Hz |
| Electric current (A) | - | - | - | 1.6 A |
| Power consumption (off) | 0.4 W | 0.3 W | 0.4 W | 0.3 W |
| Power consumption (sleep) | 0.5 W | 0.3 W | 0.5 W | 0.5 W |
| Power consumption (eco) | - | - | - | 15 W |
| Power consumption (average) | 41.5 W | - | 39 W | 30 W |
| Power consumption (maximum) | 60 W | 39 W | - | 74 W |
| Power consumption (annual) | - | 87 kWh | - | - |
| Energy efficiency class | C | B | - | - |
Dimensions, weight and color
Information about the dimensions and the weight of the specific model with and without stand as well as the colors, in which it is offered to the market.
| Width | 658.7 mm 65.87 cm 25.9331 in 2.1611 ft | 661 mm 66.1 cm 26.0236 in 2.1686 ft | 658.7 mm 65.87 cm 25.9331 in 2.1611 ft | 612.2 mm 61.22 cm 24.1024 in 2.0085 ft |
| Height | 381.9 mm 38.19 cm 15.0354 in 1.253 ft | 384.5 mm 38.45 cm 15.1378 in 1.2615 ft | 381.9 mm 38.19 cm 15.0354 in 1.253 ft | 355 mm 35.5 cm 13.9764 in 1.1647 ft |
| Depth | 64.5 mm 6.45 cm 2.5394 in 0.2116 ft | 60.7 mm 6.07 cm 2.3898 in 0.1991 ft | 64.5 mm 6.45 cm 2.5394 in 0.2116 ft | 39 mm 3.9 cm 1.5354 in 0.128 ft |
| Weight | - | 4.94 kg 10.89 lbs | - | 3.92 kg 8.64 lbs |
| Width with stand | 658.7 mm 65.87 cm 25.9331 in 2.1611 ft | 661 mm 66.1 cm 26.0236 in 2.1686 ft | 658.7 mm 65.87 cm 25.9331 in 2.1611 ft | 612.2 mm 61.22 cm 24.1024 in 2.0085 ft |
| Height with stand | 401.5 mm 40.15 cm 15.8071 in 1.3173 ft | 421.5 mm 42.15 cm 16.5945 in 1.3829 ft | 408.5 mm 40.85 cm 16.0827 in 1.3402 ft | 390.2 mm 39.02 cm 15.3622 in 1.2802 ft |
| Depth with stand | 236.5 mm 23.65 cm 9.311 in 0.7759 ft | 260.6 mm 26.06 cm 10.2598 in 0.855 ft | 247.2 mm 24.72 cm 9.7323 in 0.811 ft | 180 mm 18 cm 7.0866 in 0.5906 ft |
| Weight with stand | 8 kg 17.64 lbs | 7.43 kg 16.38 lbs | 8.2 kg 18.08 lbs | 5.96 kg 13.14 lbs |
| Box width | - | 738 mm 73.8 cm 29.0551 in 2.4213 ft | 735 mm 73.5 cm 28.937 in 2.4114 ft | - |
| Box height | - | 503 mm 50.3 cm 19.8031 in 1.6503 ft | 520 mm 52 cm 20.4724 in 1.706 ft | - |
| Box depth | - | 327 mm 32.7 cm 12.874 in 1.0728 ft | 208 mm 20.8 cm 8.189 in 0.6824 ft | - |
| Box weight | - | 10.65 kg 23.48 lbs | 11 kg 24.25 lbs | 8.52 kg 18.78 lbs |
| Colors | Black | Black | Black | Black Silver |
Ergonomics
Information about the ergonomic functions - height adjustment, swivel angles, tilt angles, etc.
| VESA mount | Yes | Yes | Yes | Yes |
| VESA interface | 100 x 100 mm | 100 x 100 mm | 100 x 100 mm | 100 x 100 mm |
| Removable stand | Yes | Yes | Yes | Yes |
| Height adjustment | Yes | Yes | Yes | Yes |
| Height adjustment range | 150 mm 15 cm 5.9055 in 0.4921 ft | 130 mm 13 cm 5.1181 in 0.4265 ft | 150 mm 15 cm 5.9055 in 0.4921 ft | 130 mm 13 cm 5.1181 in 0.4265 ft |
| Landscape/portrait pivot | Yes | Yes | Yes | Yes |
| Left pivot | 90 ° | 0 ° | 90 ° | 90 ° |
| Right pivot | 90 ° | 90 ° | 90 ° | 90 ° |
| Left/right swivel | Yes | Yes | Yes | Yes |
| Left swivel | 60 ° | 25 ° | 60 ° | 40 ° |
| Right swivel | 60 ° | 25 ° | 60 ° | 40 ° |
| Forward/backward tilt | Yes | Yes | Yes | Yes |
| Forward tilt | 5 ° | 5 ° | 5 ° | 5 ° |
| Backward tilt | 35 ° | 22 ° | 35 ° | 21 ° |
Audio
Information about the audio system - number and power of the built-in speakers, supported audio technologies.
| Speakers | 2 x 2 W | - | 2 x 2 W | - |
Camera
Many contemporary desktop monitors and smart TV sets have built-in cameras.
| Camera | No | No | No | No |
Connectivity
Available connectivity ports, slots and interfaces.
| Connectivity | 1 x HDMI 2.0 (MHL) 1 x DisplayPort 1.2 1 x DVI-D Dual Link 1 x 3.5 mm Audio Out | 1 x USB 3.0 (upstream) 4 x USB 3.0 (downstream) 1 x HDMI 1.4 1 x HDMI 2.0 1 x DisplayPort 1.2 (Input mini) 1 x DisplayPort 1.2 1 x 3.5 mm Audio Out | 1 x USB 3.0 (upstream) 4 x USB 3.0 (downstream) 1 x HDMI 1.4 (MHL) 1 x DisplayPort 1.2 (Input mini) 1 x DisplayPort 1.2 1 x DVI-D Dual Link 1 x 3.5 mm Audio Out | 1 x USB 3.0 (upstream) 2 x USB 3.0 (downstream) 2 x USB 3.0 (charger - 5V/2.0A) 1 x HDMI 1.4 1 x DisplayPort 1.4 (Output MST) 1 x DisplayPort 1.4 1 x 3.5 mm Audio Out |
| High-bandwidth Digital Content Protection (HDCP) | - | High-bandwidth Digital Content Protection (HDCP) | High-bandwidth Digital Content Protection (HDCP) 2.2 |
Features
Some additional functional features of the model.
| Features | Flicker-free technology Picture-By-Picture Picture-in-Picture | AMD FreeSync technology Eco Saving Plus Eye Saver Mode Flicker-free technology Picture-by-Picture Picture-in-Picture Samsung MagicBright USB Super Charging | Flicker-free technology Picture-By-Picture Picture-in-Picture | DDC/CI Flicker-free technology |
Certificates, standards and licenses
Licenses from regulatory agencies, standards, certificates.
| Certificates, standards and licenses | ENERGY STAR ErP TCO Certified Displays 6.0 | CCC cTick ENERGY STAR Epeat Gold/Silver (Market dependent) FCC class B TCO Certified Displays 6.0 TÜV/GS VCCI | ENERGY STAR ErP TCO Certified Displays 6.0 | CECP ENERGY STAR Epeat Gold RoHS compliant TCO Certified Displays |
Operating and storage conditions
There are certain requirements for the environmental conditions, in which the display should be used and stored in order to function properly.
| Operating temperature | - | 10 °C - 40 °C 50 °F - 104 °F | - | 0 °C - 40 °C 32 °F - 104 °F |
| Operating humidity | - | 10 % - 80 % | - | 10 % - 80 % |
| Operating altitude | - | - | - | 5000 m 16404.2 ft |
| Storage temperature | - | -20 °C - 45 °C -4 °F - 113 °F | - | -20 °C - 60 °C -4 °F - 140 °F |
| Storage humidity | - | 5 % - 95 % | - | 5 % - 90 % |
| Storage altitude | - | - | - | 12192 m 40000 ft |
Accessories
Often the packaging of desktop monitors and smart TV sets includes accessories for them.
| Accessories | DisplayPort cable DVI-D cable | DisplayPort cable - mini-DP to DP HDMI cable USB 3.0 upstream cable | DisplayPort cable DVI-D cable USB 3.0 upstream cable | DisplayPort cable USB 3.0 upstream cable |
Additional features
Information about other features.
| Additional features | - | - | - | Security lock slot |
| Acer CB281HK | Samsung U28E850R | Acer B286HK | Dell UltraSharp U2719D |