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- HD29x vs PX749-4K
Optoma HD29x vs ViewSonic PX749-4K
What HD29x does better (2) and where PX749-4K wins (3) — every spec side by side.
Dimensions
Size comparison
HD29xPX749-4K
| HD29x | PX749-4K | Difference | |
|---|---|---|---|
| Height | 108 mm | 222 mm | −114 mm |
| Width | 316 mm | 312 mm | +4 mm |
| Depth | 244 mm | 108 mm | +136 mm |
| Weight | 2.9 kg | 3 kg | −0.1 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is HD29x better than PX749-4K?
- Contrast ratio (dynamic / claimed)22,000:1 vs 12,000:1+83%
- Weight2.88 kg vs 3 kg+4%
Why is PX749-4K better than HD29x?
- Resolution (on screen)1920 × 1080 (Full HD) vs 3840 × 2160 (4K UHD)
- Light source life4,000 h vs 40,000 h10×
- Ethernet (LAN)No · HD29x: 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 | — | Lamp |
| Brightness (ANSI / ISO lumens) | 4,000 lm | 4,000 lm |
| Contrast ratio (dynamic / claimed) | 22,000:1 | 12,000:1 |
| HDR support | No | — |
| 3D playback | Yes | — |
| Gaming | ||
| Maximum refresh rate | 85 Hz | — |
| Game / low-latency mode | Yes | — |
| Lens & placement | ||
| Throw ratio | 1.5:1 | — |
| Throw ratio (zoomed in) | 1.66:1 | — |
| Throw type | Standard throw (1.0:1 and longer) | — |
| Distance for a 100″ 16:9 image | 3.32 m | — |
| Smallest image size | 30″ | — |
| Largest image size | 300″ | — |
| Optical zoom | 1.1× | — |
| Lens shift | None | — |
| Keystone correction | Yes | — |
| Automatic keystone correction | No | — |
| Sound | ||
| Built-in speakers (total output) | 10 W | — |
| Smart & streaming | ||
| Wi-Fi | Yes | — |
| Connectivity | ||
| HDMI inputs | 2 | 2 |
| HDMI version | 2 | 2 |
| USB port | Yes | Yes |
| Ethernet (LAN) | No | Yes |
| VGA input | No | No |
| Audio output | Yes | Yes |
| Battery, power & lifetime | ||
| Power consumption | 290 W | — |
| Light source life | 4,000 h | 40,000 h |
| Light source life (eco mode) | 10,000 h | 20,000 h |
| Design & noise | ||
| Fan noise | 29 dB | — |
| Fan noise (eco mode) | 27 dB | — |
| Weight | 2.88 kg | 3 kg |
| Width | 316 mm | 312 mm |
| Height | 108 mm | 222 mm |
| Depth | 244 mm | 108 mm |
| Colours | White | White |
