Comparison between:
- 27" Acer B277K
- 27" HP Z27k G3 4K
- 27" HP E27u G4 QHD
Brand, series, model
Information about the brand, series, model and model aliases.
| Acer B277K | HP Z27k G3 4K | HP E27u G4 QHD | |
 |  |  | |
| Model alias | B277K bmiipprzx | 1B9T0AA | 189T3AA |
| Model year | 2018 | 2021 | 2021 |
Display
Information about the main characteristics of the display - panel, backlight, resolution, refresh rate, etc.
| Size class | 27 in | 27 in | 27 in |
| Diagonal | 684.7 mm 68.47 cm 26.9567 in 2.2464 ft | 685.8 mm 68.58 cm 27 in 2.25 ft | 685.8 mm 68.58 cm 27 in 2.25 ft |
| Width | 596.16 mm 59.616 cm 23.4709 in 1.9559 ft | 596.736 mm 59.6736 cm 23.4935 in 1.9578 ft | 596.736 mm 59.6736 cm 23.4935 in 1.9578 ft |
| Height | 335.34 mm 33.534 cm 13.2024 in 1.1002 ft | 335.664 mm 33.5664 cm 13.2151 in 1.1013 ft | 335.664 mm 33.5664 cm 13.2151 in 1.1013 ft |
| Panel type | IPS | IPS | IPS |
| Panel bit depth | 10 bits (8 bits + FRC) | 10 bits (8 bits + FRC) | 8 bits (6 bits + FRC) |
| FRC | Yes | Yes | Yes |
| Colors | 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 |
| Resolution | 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 | 0.155 mm 0.0155 cm 0.0061 in 0.0005 ft | 0.155 mm 0.0155 cm 0.0061 in 0.0005 ft | 0.233 mm 0.0233 cm 0.0092 in 0.0008 ft |
| Pixel density | 163 ppi 64 ppcm | 163 ppi 64 ppcm | 109 ppi 42 ppcm |
| Display area | 88.72 % | 91.89 % | 89.06 % |
| Backlight | W-LED | W-LED | W-LED |
| sRGB | 100 % | 99 % | - |
| DCI P3 | - | 85 % | - |
| Brightness | 300 cd/m² | 350 cd/m² | 250 cd/m² |
| Static contrast | 1000 : 1 | 1000 : 1 | 1000 : 1 |
| Dynamic contrast | 100000000 : 1 | 10000000 : 1 | 5000000 : 1 |
| Horizontal viewing angle | 178 ° | 178 ° | 178 ° |
| Vertical viewing angle | 178 ° | 178 ° | 178 ° |
| Minimum response time | 4 ms 0.0040 s | 5 ms 0.0050 s | 5 ms 0.0050 s |
| Average response time | - | 14 ms 0.0140 s | - |
| Coating | Anti-glare/Matte (3H) | Anti-glare/Matte | Anti-glare/Matte |
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 |
Frequencies
Information about the horizontal and vertical refresh rates/frequencies.
| Horizontal frequency (digital) | 30 kHz - 160 kHz | 30 kHz - 90 kHz | - |
| Vertical frequency (digital) | 40 Hz - 60 Hz | 50 Hz - 60 Hz | 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 |
| 220V | 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 |
| Power consumption (off) | 0.35 W | 0.5 W | - |
| Power consumption (sleep) | 0.45 W | 0.5 W | 0.5 W |
| Power consumption (eco) | - | 28 W | 19 W |
| Power consumption (average) | 31 W | - | 30 W |
| Power consumption (maximum) | 39 W | - | 138 W |
| Power consumption (annual) | - | 87 kWh | 60 kWh |
| Energy efficiency class | 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 | 614 mm 61.4 cm 24.1732 in 2.0144 ft | 612.3 mm 61.23 cm 24.1063 in 2.0089 ft | 613.3 mm 61.33 cm 24.1457 in 2.0121 ft |
| Height | 367 mm 36.7 cm 14.4488 in 1.2041 ft | 356 mm 35.6 cm 14.0157 in 1.168 ft | 366.7 mm 36.67 cm 14.437 in 1.2031 ft |
| Depth | 65.7 mm 6.57 cm 2.5866 in 0.2156 ft | 38.9 mm 3.89 cm 1.5315 in 0.1276 ft | 48.8 mm 4.88 cm 1.9213 in 0.1601 ft |
| Weight | 4.36 kg 9.61 lbs | 4.5 kg 9.92 lbs | - |
| Width with stand | 614 mm 61.4 cm 24.1732 in 2.0144 ft | 612.3 mm 61.23 cm 24.1063 in 2.0089 ft | 613.3 mm 61.33 cm 24.1457 in 2.0121 ft |
| Height with stand | 401 mm 40.1 cm 15.7874 in 1.3156 ft | 380.3 mm 38.03 cm 14.9724 in 1.2477 ft | 385.9 mm 38.59 cm 15.1929 in 1.2661 ft |
| Depth with stand | 207.5 mm 20.75 cm 8.1693 in 0.6808 ft | 205 mm 20.5 cm 8.0709 in 0.6726 ft | 215.8 mm 21.58 cm 8.4961 in 0.708 ft |
| Weight with stand | 6.5 kg 14.33 lbs | 6.2 kg 13.67 lbs | 7.6 kg 16.76 lbs |
| Colors | Black | Turbo Silver | Black |
Ergonomics
Information about the ergonomic functions - height adjustment, swivel angles, tilt angles, etc.
| VESA mount | Yes | Yes | Yes |
| VESA interface | 100 x 100 mm | 100 x 100 mm | 100 x 100 mm |
| Removable stand | Yes | Yes | Yes |
| Height adjustment | Yes | Yes | Yes |
| Height adjustment range | 120 mm 12 cm 4.7244 in 0.3937 ft | 150 mm 15 cm 5.9055 in 0.4921 ft | 150 mm 15 cm 5.9055 in 0.4921 ft |
| Landscape/portrait pivot | Yes | Yes | Yes |
| Left pivot | 0 ° | 0 ° | 90 ° |
| Right pivot | 90 ° | 90 ° | 90 ° |
| Left/right swivel | Yes | Yes | Yes |
| Left swivel | 45 ° | 45 ° | 45 ° |
| Right swivel | 45 ° | 45 ° | 45 ° |
| Forward/backward tilt | Yes | Yes | Yes |
| Forward tilt | 5 ° | 5 ° | 5 ° |
| Backward tilt | 25 ° | 20 ° | 23 ° |
Audio
Information about the audio system - number and power of the built-in speakers, supported audio technologies.
| Speakers | 2 x 2 W | - | - |
Camera
Many contemporary desktop monitors and smart TV sets have built-in cameras.
| Camera | No | No | No |
Network
Supported network technologies and standards for exchanging data with other devices.
| Network | - | LAN | - |
Connectivity
Available connectivity ports, slots and interfaces.
| Connectivity | 1 x USB 3.0 (upstream) 4 x USB 3.0 (downstream) 2 x HDMI 2.0 1 x DisplayPort 1.2 (Input mini) 1 x DisplayPort 1.2 1 x 3.5 mm Audio In 1 x 3.5 mm Audio Out | 1 x USB (Type-C; upstream; 100W; DP Alt Mode) 4 x USB 3.2 (Type-A; Gen 1; downstream) 1 x Ethernet RJ45 1 x HDMI 2.0 1 x DisplayPort 1.4 (out) 1 x DisplayPort 1.4 (in) | 1 x USB 3.2 (Type-C; upstream; 65W; DP Alt Mode) 4 x USB 3.2 (Type-A; Gen 1; downstream) 1 x HDMI 1.4 1 x DisplayPort 1.2 (out) 1 x DisplayPort 1.2 (in) |
| High-bandwidth Digital Content Protection (HDCP) | High-bandwidth Digital Content Protection (HDCP) 2.2 | HDCP (High-bandwidth Digital Content Protection) |
Features
Some additional functional features of the model.
| Features | AMD FreeSync technology Blue Light Filter Flicker-free technology | 4-sided Micro Edge Design Flicker-free technology Low Blue Light Picture-by-Picture Picture-in-Picture | 3-sided Micro-Edge desing Flicker-free technology Low Blue Light |
Certificates, standards and licenses
Licenses from regulatory agencies, standards, certificates.
| Certificates, standards and licenses | ENERGY STAR 7.0 Epeat Gold ErP TCO Certified Displays 7.0 | Australian-New Zealand MEPS; BIS BSMI CB CCC CE CECP CEL cTUVus EAC ENERGY STAR FCC GS Mark ISO 9241-307 KC/KCC NOM PSB SEPA TCO Certified TCO Certified Edge TUV-S VCCI WEEE Ukraine Energy label WW application UAE | Australian-New Zealand MEPS BIS BSMI CB CCC CE CECP CEL cTUVus EAC ENERGY STAR FCC ISE for Cambodia ISO 9241-307 KC/KCC NOM PSB SEPA TCO Certified TCO Certified Edge TUV-S VCCI Vietnam MEPS WEEE ISC WW application ICE UAE |
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 | - | 5 °C - 35 °C 41 °F - 95 °F | 5 °C - 35 °C 41 °F - 95 °F |
| Operating humidity | - | 20 % - 80 % | 20 % - 80 % |
| Operating altitude | - | 5000 m 16404.2 ft | 5000 m 16404.2 ft |
| Storage temperature | - | -20 °C - 60 °C -4 °F - 140 °F | -34 °C - 60 °C -29.2 °F - 140 °F |
| Storage humidity | - | 5 % - 95 % | 5 % - 95 % |
| Storage altitude | - | 12192 m 40000 ft | 12192 m 40000 ft |
Accessories
Often the packaging of desktop monitors and smart TV sets includes accessories for them.
| Accessories | DisplayPort cable - optional HDMI cable - optional USB 3.0 upstream cable | DisplayPort cable USB Type-A to Type-B cable | USB Type-C cable |
Additional features
Information about other features.
| Additional features | - | Security lock slot | Security lock slot |
| Acer B277K | HP Z27k G3 4K | HP E27u G4 QHD |