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| General Info | ||
|---|---|---|
| Model Number | Acer XB281HK | Dell S2721HGF |
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| Price | ||
| Type | Monitor | Monitor |
| Year | 2015 | 2020 |
| Brand | Acer | Dell |
| Model Number | XB281HK | S2721HGF |
| Alias | Predator XB281HKbmiprz | |
| Display | ||
| Screen Size Class | 28" (inches) | 27" (inches) |
| Diagonal Size | 28 in 71.1 cm 711.2 mm 2.33 ft |
26.96 in 68.5 cm 684.7 mm 2.25 ft |
| Screen Width | 24.45 in 62.1 cm 620.93 mm 2.04 ft |
23.49 in 59.7 cm 596.736 mm 1.96 ft |
| Screen Height | 13.44 in 34.1 cm 341.28 mm 1.12 ft |
13.22 in 33.6 cm 335.664 mm 1.1 ft |
| Display Curvature | 1500 | |
| Display Manufacturer | Innolux | |
| Display Type | TN | VA |
| Display Bit Depth | 10 bits (8 bits + FRC) | 8 bits |
| Frame Rate Control | Yes | |
| Max Number of Colors | 1073741824 | 16777216 |
| Bits | 30 | 24 |
| Screen Aspect Ratio | 16:9 | 16:9 |
| Screen Resolution | 3840 x 2160 | 1920 x 1080 |
| Screen Pixel Pitch | 0.162 mm | 0.311 mm |
| Screen Pixel Density | 157 ppi | 81 ppi |
| Screen-to-Body Ratio | 90.42 % | |
| Backlight Source | W-LED | W-LED |
| NTSC 1953 | 72 % | 83 % |
| Screen Brightness | 300 cd/m² | 350 cd/m² |
| Static Screen Contrast | 1000 : 1 | 3000 : 1 |
| Dynamic Screen Contrast | 100000000 : 1 | |
| Screen Horizontal Viewing Angle | 170 ° | 178 ° |
| Screen Vertical Viewing Angle | 160 ° | 178 ° |
| Display Minimum Response Time | 1 ms | 4 ms |
| Display Coating | Anti-glare/Matte (3H) | Anti-glare/Matte (3H) |
| 3D | No | No |
| Size, weight, color | ||
| Case Depth | 3.79 in 9.6 cm 96.3 mm 0.32 ft |
|
| Case Weight | 4.06 kg 9 lbs |
|
| Case Width with Stand | 25.94 in 65.9 cm 659 mm 2.16 ft |
23.95 in 60.8 cm 608.4 mm 2 ft |
| Case Height with Stand | 16.34 in 41.5 cm 415 mm 1.36 ft |
19.42 in 49.3 cm 493.2 mm 1.62 ft |
| Case Depth with Stand | 10.55 in 26.8 cm 268 mm 0.88 ft |
7.5 in 19 cm 190.4 mm 0.62 ft |
| Case Weight with Stand | 7.57 kg 17 lbs |
8.86 kg 19 lbs |
| Case Color | Black | Black |
| Hardware | ||
| Built-in Camera | No | No |
| Connectivity | 1 x HDMI 1.4 1 x DisplayPort 1.2 1 x 3.5 mm Audio Out 4 x USB 3.0 (downstream) 1 x USB 3.0 (upstream) |
1 x 3.5 mm Audio Out 2 x HDMI 1.4 1 x DisplayPort 1.2 |
| Audio | ||
| Audio Speakers | 2 x 2W | |
| Features | ||
| Cool Features | Flicker-free technology Nvidia G-SYNC Technology |
Low Blue Light NVIDIA G-SYNC Compatible AMD FreeSync Premium Flicker-free technology |
| Ergonomics | ||
| Case Width | 23.95 in 60.8 cm 608.4 mm 2 ft |
|
| Case Height | 14.33 in 36.4 cm 364.1 mm 1.19 ft |
|
| Vesa Mount Support | Yes | Yes |
| VESA Interface Standard Size | 100 x 100 | 100 x 100 |
| Removable VESA Stand | Yes | Yes |
| Height Adjustment | Yes | Yes |
| Height Adjustment Range | 150 mm 15 cm 5.9055 in 0.4921 ft |
100 mm 10 cm 3.937 in 0.3281 ft |
| Landscape or Portrait Pivot Support | Yes | No |
| Left Pivot | 90 ° | |
| Right Pivot | 90 ° | |
| Left or Right Swivel Support | Yes | No |
| Left Swivel | 30 ° | |
| Right Swivel | 30 ° | |
| Forward and Backward Tilt Support | Yes | Yes |
| Forward Tilt | 5 ° | 5 ° |
| Backward Tilt | 35 ° | 21 ° |
| Frequency and Interpolation | ||
| Vertical Digital Frequency | 60 Hz | 48 Hz - 144 Hz |
| Screen Interpolation Measurement Unit | NULL | |
| Accessories | ||
| Extras | DisplayPort cable HDMI cable USB 3.0 cable |
|
| Certificates and Standards | ||
| Licenses | ENERGY STAR ErP TCO Certified Displays 6.0 |
ENERGY STAR EPEAT TCO Certified RoHS |
| Usage and Storage Requirements | ||
| Safe Operating Temperature Level | 0 °C - 40 °C 32 °F - 104 °F |
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| Safe Operating Humidity Level | 10 % - 80 % | |
| Internal Storage Temperature | -20 °C - 60 °C -4 °F - 140 °F |
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| Internal Storage Humidity | 5 % - 90 % | |
| Max Operating Altitude | 5000 | |
| Max Storage Altitude | 12192 |
| Acer XB281HK | Dell S2721HGF |
