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- Atom vs PX749-4K
Dangbei Atom vs ViewSonic PX749-4K
What Atom does better (1) and where PX749-4K wins (5) — every spec side by side.
Why is Atom better than PX749-4K?
- Weight1.28 kg vs 3 kg2.3×
Why is PX749-4K better than Atom?
- Brightness (ANSI / ISO lumens)1,200 lm vs 4,000 lm3.3×
- Resolution (on screen)1920 × 1080 (Full HD) vs 3840 × 2160 (4K UHD)
- Light source life30,000 h vs 40,000 h+33%
- HDMI inputs1 vs 22×
- Ethernet (LAN)No · Atom: Yes
Specifications
Side by side
| Picture | ||
| Resolution (on screen) | 1920 × 1080 (Full HD) | 3840 × 2160 (4K UHD) |
| Native panel resolution | 1920 × 1080 (Full HD) | 1920 × 1080 (Full HD) |
| 4K method | — | 4K by pixel shifting |
| Display technology | DLP | DLP |
| Light source | Laser | Lamp |
| Brightness (ANSI / ISO lumens) | 1,200 lm | 4,000 lm |
| Contrast ratio (dynamic / claimed) | — | 12,000:1 |
| HDR support | Yes | — |
| HDR formats | HDR10, HLG | — |
| 3D playback | Yes | — |
| Lens & placement | ||
| Throw ratio | 1.2:1 | — |
| Throw type | Standard throw (1.0:1 and longer) | — |
| Distance for a 100″ 16:9 image | 2.66 m | — |
| Smallest image size | 40″ | — |
| Largest image size | 180″ | — |
| Lens shift | None | — |
| Autofocus | Yes | — |
| Keystone correction | Yes | — |
| Automatic keystone correction | Yes | — |
| Obstacle avoidance | Yes | — |
| Automatic screen fit | Yes | — |
| Sound | ||
| Built-in speakers (total output) | 10 W | — |
| Dolby Audio / Dolby Digital Plus | Yes | — |
| Smart & streaming | ||
| Smart platform | Google TV | — |
| Built-in smart platform | Yes | — |
| Netflix (officially licensed) | Yes | — |
| Wi-Fi | Yes | — |
| Bluetooth | Yes | — |
| Chromecast built-in | Yes | — |
| Internal storage | 32 GB | — |
| Connectivity | ||
| HDMI inputs | 1 | 2 |
| HDMI version | — | 2 |
| USB port | Yes | Yes |
| Ethernet (LAN) | No | Yes |
| VGA input | No | No |
| Audio output | Yes | Yes |
| Battery, power & lifetime | ||
| Power consumption | 80 W | — |
| Light source life | 30,000 h | 40,000 h |
| Light source life (eco mode) | — | 20,000 h |
| Design & noise | ||
| Fan noise | 24 dB | — |
| Weight | 1.28 kg | 3 kg |
| Width | — | 312 mm |
| Height | — | 222 mm |
| Depth | — | 108 mm |
| Colours | — | White |
