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- UHD35STx vs LX720-4K
Optoma UHD35STx vs ViewSonic LX720-4K
What UHD35STx does better (3) and where LX720-4K wins (1) — every spec side by side.
Dimensions
Size comparison
UHD35STxLX720-4K
| UHD35STx | LX720-4K | Difference | |
|---|---|---|---|
| Height | 118 mm | 104 mm | +14 mm |
| Width | 315 mm | 312 mm | +3 mm |
| Depth | 270 mm | 234 mm | +36 mm |
| Weight | 3.5 kg | 3.5 kg | = |
Drawn to the same scale from the official dimensions (front and side).
Why is UHD35STx better than LX720-4K?
- Brightness (ANSI / ISO lumens)3,600 lm vs 3,500 lm+3%
- Contrast ratio (dynamic / claimed)1,000,000:1 vs 300,000:13.3×
- Fan noise28 dB vs 32 dB+14%
Why is LX720-4K better than UHD35STx?
- Light source life4,000 h vs 20,000 h5×
Specifications
Side by side
| Picture | ||
| Resolution (on screen) | 3840 × 2160 (4K UHD) | 3840 × 2160 (4K UHD) |
| Native panel resolution | 1920 × 1080 (Full HD) | 1920 × 1080 (Full HD) |
| 4K method | 4K by pixel shifting | 4K by pixel shifting |
| Display technology | DLP | DLP |
| Light source | — | Laser |
| Brightness (ANSI / ISO lumens) | 3,600 lm | 3,500 lm |
| Contrast ratio (dynamic / claimed) | 1,000,000:1 | 300,000:1 |
| HDR support | Yes | — |
| Motion interpolation (MEMC) | Yes | — |
| 3D playback | Yes | — |
| Gaming | ||
| Maximum refresh rate | 120 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 | 33″ | — |
| Largest image size | 302″ | 300″ |
| Lens shift | Vertical | — |
| Keystone correction | Yes | Yes |
| Automatic keystone correction | No | No |
| Sound | ||
| Built-in speakers (total output) | 10 W | 10 W |
| Smart & streaming | ||
| Wi-Fi | — | Yes |
| Bluetooth | — | Yes |
| Internal storage | — | 8 GB |
| Connectivity | ||
| HDMI inputs | 2 | 2 |
| HDMI version | 2 | — |
| USB port | Yes | Yes |
| Ethernet (LAN) | No | No |
| VGA input | No | No |
| Audio output | Yes | Yes |
| Battery, power & lifetime | ||
| Power consumption | 320 W | — |
| Light source life | 4,000 h | 20,000 h |
| Light source life (eco mode) | 15,000 h | 30,000 h |
| Design & noise | ||
| Fan noise | 28 dB | 32 dB |
| Fan noise (eco mode) | 24 dB | 26 dB |
| Weight | 3.5 kg | 3.5 kg |
| Width | 315 mm | 312 mm |
| Height | 118 mm | 104 mm |
| Depth | 270 mm | 234 mm |
| Colours | White | — |
