Comparison between:
- 21.5" Asus VS228H-P
- 23" HP Z23i
- 23.8" Lenovo ThinkVision T2424p
Brand, series, model
Information about the brand, series, model and model aliases.
| Asus VS228H-P | HP Z23i | Lenovo ThinkVision T2424p | |
 |  |  | |
| Model alias | - | D7Q13A4 | - |
| Model year | 2012 | 2013 | 2015 |
Display
Information about the main characteristics of the display - panel, backlight, resolution, refresh rate, etc.
| Size class | 21.5 in | 23 in | 23.8 in |
| Diagonal | 546.1 mm 54.61 cm 21.5 in 1.7917 ft | 584.2 mm 58.42 cm 23 in 1.9167 ft | 604.7 mm 60.47 cm 23.8071 in 1.9839 ft |
| Width | 476.64 mm 47.664 cm 18.7654 in 1.5638 ft | 509.184 mm 50.9184 cm 20.0466 in 1.6706 ft | 527.04 mm 52.704 cm 20.7496 in 1.7291 ft |
| Height | 268.11 mm 26.811 cm 10.5555 in 0.8796 ft | 286.416 mm 28.6416 cm 11.2762 in 0.9397 ft | 296.46 mm 29.646 cm 11.6717 in 0.9726 ft |
| Panel manufacturer | AU Optronics Innolux | LG Display | - |
| Panel model | M215HTN01.1 (AU Optronics) M215HGE-L21 (Innolux) | LM230WF3-SLL1 | - |
| Panel type | TN | AH-IPS | IPS |
| Panel bit depth | 8 bits (6 bits + FRC) | 8 bits (6 bits + FRC) | 8 bits (6 bits + FRC) |
| FRC | Yes | Yes | Yes |
| Colors | 16777216 colors 24 bits | 16777216 colors 24 bits | 16777216 colors 24 bits |
| Aspect ratio | 1.778:1 16:9 | 1.778:1 16:9 | 1.778:1 16:9 |
| Resolution | 1920 x 1080 pixels Full HD / 1080p | 1920 x 1080 pixels Full HD / 1080p | 1920 x 1080 pixels Full HD / 1080p |
| Pixel pitch | 0.248 mm 0.0248 cm 0.0098 in 0.0008 ft | 0.265 mm 0.0265 cm 0.0104 in 0.0009 ft | 0.275 mm 0.0275 cm 0.0108 in 0.0009 ft |
| Pixel density | 102 ppi 40 ppcm | 95 ppi 37 ppcm | 92 ppi 36 ppcm |
| Display area | - | 81.48 % | 83.25 % |
| Backlight | W-LED | W-LED | W-LED |
| sRGB | - | 95 % | - |
| NTSC (1953) | 72 % | 72 % | 72 % |
| Brightness | 250 cd/m² | 250 cd/m² | 250 cd/m² |
| Static contrast | 1000 : 1 | 1000 : 1 | 1000 : 1 |
| Dynamic contrast | 50000000 : 1 | 5000000 : 1 | 3000000 : 1 |
| Horizontal viewing angle | 170 ° | 178 ° | 178 ° |
| Vertical viewing angle | 160 ° | 178 ° | 178 ° |
| Minimum response time | 5 ms 0.0050 s | 8 ms 0.0080 s | 7 ms 0.0070 s |
| Average response time | - | 14 ms 0.0140 s | 14 ms 0.0140 s |
| Maximum response time | - | 20 ms 0.0200 s | - |
| Input lag | - | 20 ms 0.0200 s | - |
| Coating | Anti-glare/Matte (3H) | Anti-glare/Matte | Anti-glare/Matte |
| - | CIE1976 - 72% CIE1931 - 86% | - |
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 (analog) | 30 kHz - 80 kHz | - | - |
| Horizontal frequency (digital) | 30 kHz - 80 kHz | 24 kHz - 94 kHz | 30 kHz - 83 kHz |
| Vertical frequency (analog) | 55 Hz - 75 Hz | - | - |
| Vertical frequency (digital) | 55 Hz - 75 Hz | 50 Hz - 76 Hz | 50 Hz - 75 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 |
| Electric current (A) | - | - | 1.5 A |
| Power consumption (off) | 0.5 W | 0.5 W | 0.5 W |
| Power consumption (sleep) | 0.5 W | 0.5 W | 0.5 W |
| Power consumption (eco) | - | 22 W | 22 W |
| Power consumption (average) | 25 W | 28 W | 26 W |
| Power consumption (maximum) | - | 36 W | 54 W |
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 | - | 544 mm 54.4 cm 21.4173 in 1.7848 ft | 563.6 mm 56.36 cm 22.189 in 1.8491 ft |
| Height | - | 329 mm 32.9 cm 12.9528 in 1.0794 ft | 333 mm 33.3 cm 13.1102 in 1.0925 ft |
| Depth | - | 51 mm 5.1 cm 2.0079 in 0.1673 ft | 44 mm 4.4 cm 1.7323 in 0.1444 ft |
| Weight | - | 4.19 kg 9.24 lbs | 3.85 kg 8.49 lbs |
| Width with stand | 514.1 mm 51.41 cm 20.2402 in 1.6867 ft | 544 mm 54.4 cm 21.4173 in 1.7848 ft | 563.6 mm 56.36 cm 22.189 in 1.8491 ft |
| Height with stand | 385.5 mm 38.55 cm 15.1772 in 1.2648 ft | 469.9 mm 46.99 cm 18.5 in 1.5417 ft | 372.5 mm 37.25 cm 14.6654 in 1.2221 ft |
| Depth with stand | 200 mm 20 cm 7.874 in 0.6562 ft | 242.9 mm 24.29 cm 9.563 in 0.7969 ft | 264.2 mm 26.42 cm 10.4016 in 0.8668 ft |
| Weight with stand | 3.1 kg 6.83 lbs | 6.4 kg 14.11 lbs | 5.85 kg 12.9 lbs |
| Colors | Black | Black | 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 | No | Yes | Yes |
| Height adjustment range | - | 150 mm 15 cm 5.9055 in 0.4921 ft | 110 mm 11 cm 4.3307 in 0.3609 ft |
| Landscape/portrait pivot | No | Yes | Yes |
| Left pivot | - | 0 ° | 0 ° |
| Right pivot | - | 90 ° | 90 ° |
| Left/right swivel | No | Yes | Yes |
| Left swivel | - | 180 ° | 45 ° |
| Right swivel | - | 180 ° | 45 ° |
| Forward/backward tilt | Yes | Yes | Yes |
| Forward tilt | 5 ° | 5 ° | 5 ° |
| Backward tilt | 25 ° | 30 ° | 30 ° |
Camera
Many contemporary desktop monitors and smart TV sets have built-in cameras.
| Camera | No | No | No |
Connectivity
Available connectivity ports, slots and interfaces.
| Connectivity | 1 x HDMI 1.4 1 x DVI-D Dual Link 1 x D-sub 1 x 3.5 mm Audio Out | 1 x USB 2.0 (upstream) 2 x USB 2.0 (downstream) 1 x DisplayPort 1.2 1 x DVI-D Dual Link 1 x D-sub | 1 x USB 3.0 (upstream) 4 x USB 3.0 (downstream) 1 x HDMI 1.4 1 x DisplayPort 1.2 1 x D-sub 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) |
Features
Some additional functional features of the model.
| Features | SPLENDID Video Intelligence Technology | DDC/CI | DDC/CI |
Certificates, standards and licenses
Licenses from regulatory agencies, standards, certificates.
| Certificates, standards and licenses | BSMI CB CCC CE C-Tick CU ENERGY STAR 5.0 Epeat Gold ErP FCC Class B RoHS UL/cUL VCCI WEEE WHQL (Windows 8; Windows 7) | BSMI C-Tick CB CCC CE CECP CEL Grade 1 EAC ENERGY STAR EPA Epeat Gold/Silver (market dependent) FCC Class B ICE ISC KC KCC NOM PSB SEPA TCO EDGE TÜV/S VCCI-B WHQL (Windows 8; Windows 7) | BSMI C-Tick CCC CE CECP ENERGY STAR Epeat Gold FCC Class B KC RoHS TCO Certified Display 7.0 TCO Edge 2.0 TÜV/GS VCCI WHQL (Windows 10; Windows 8.1; Windows 8; Windows 7) |
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 | 0 °C - 50 °C 32 °F - 122 °F | 5 °C - 35 °C 41 °F - 95 °F | 0 °C - 45 °C 32 °F - 113 °F |
| Operating humidity | - | 20 % - 80 % | 10 % - 80 % |
| Operating altitude | - | 5000 m 16404.2 ft | 5000 m 16404.2 ft |
| Storage temperature | 20 °C - 60 °C 68 °F - 140 °F | -20 °C - 60 °C -4 °F - 140 °F | -20 °C - 60 °C -4 °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 | D-sub cable DVI-D cable | D-sub cable DisplayPort cable USB 2.0 upstream cable | DisplayPort cable USB 3.0 cable |
Additional features
Information about other features.
| Additional features | Anti-theft stand lock slot - Kensington | Security lock slot | Anti-theft stand lock slot - Kensington |
| Asus VS228H-P | HP Z23i | Lenovo ThinkVision T2424p |