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- UHD300X vs PX725HD
Optoma UHD300X vs ViewSonic PX725HD
What UHD300X does better (6) and where PX725HD wins (1) — every spec side by side.
Why is UHD300X better than PX725HD?
- Resolution (on screen)3840 × 2160 (4K UHD) vs 1920 × 1080 (Full HD)
- Brightness (ANSI / ISO lumens)2,200 lm vs 2,000 lm+10%
- Contrast ratio (dynamic / claimed)250,000:1 vs 22,000:111.4×
- Built-in speakers (total output)10 W vs 8 W+25%
- Ethernet (LAN)Yes · PX725HD: No
- Light source life4,000 h vs 3,500 h+14%
Why is PX725HD better than UHD300X?
- Weight5.2 kg vs 2.94 kg+77%
Specifications
Side by side
| Picture | ||
| Resolution (on screen) | 3840 × 2160 (4K UHD) | 1920 × 1080 (Full HD) |
| Native panel resolution | 1920 × 1080 (Full HD) | 1920 × 1080 (Full HD) |
| 4K method | 4K by pixel shifting | — |
| Display technology | DLP | DLP |
| Brightness (ANSI / ISO lumens) | 2,200 lm | 2,000 lm |
| Contrast ratio (dynamic / claimed) | 250,000:1 | 22,000:1 |
| HDR support | Yes | — |
| Gaming | ||
| Maximum refresh rate | 120 Hz | 120 Hz |
| Lens & placement | ||
| Throw ratio | 1.21:1 | — |
| Throw ratio (zoomed in) | 1.59:1 | — |
| Throw type | Standard throw (1.0:1 and longer) | — |
| Distance for a 100″ 16:9 image | 2.68 m | — |
| Smallest image size | 34″ | — |
| Largest image size | 302″ | — |
| Optical zoom | 1.3× | — |
| Lens shift | Vertical | — |
| Sound | ||
| Built-in speakers (total output) | 10 W | 8 W |
| Connectivity | ||
| HDMI inputs | 2 | 2 |
| HDMI version | — | 1.4 |
| USB port | Yes | Yes |
| Ethernet (LAN) | Yes | No |
| VGA input | Yes | No |
| Audio output | Yes | Yes |
| Battery, power & lifetime | ||
| Power consumption | 305 W | 310 W |
| Light source life | 4,000 h | 3,500 h |
| Light source life (eco mode) | 15,000 h | 7,000 h |
| Design & noise | ||
| Fan noise | — | 34 dB |
| Fan noise (eco mode) | 25 dB | 30 dB |
| Weight | 5.2 kg | 2.94 kg |
| Width | 392 mm | — |
| Height | 118 mm | — |
| Depth | 281 mm | — |
| Colours | White | White |
