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- 4K400STx vs Horizon Ultra
Optoma 4K400STx vs XGIMI Horizon Ultra
What 4K400STx does better (5) and where Horizon Ultra wins (5) — every spec side by side.
vs
8.7Picture5.3
5.9Gaming & inputs2.4
4.3Setup & placement7.1
4.1Noise, lifetime & portability7.0
Dimensions
Size comparison
4K400STxHorizon Ultra
| 4K400STx | Horizon Ultra | Difference | |
|---|---|---|---|
| Height | 118 mm | 170 mm | −52 mm |
| Width | 315 mm | 224 mm | +91 mm |
| Depth | 270 mm | 265 mm | +5 mm |
| Weight | 3.9 kg | 5.2 kg | −1.3 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is 4K400STx better than Horizon Ultra?
- Brightness (ANSI / ISO lumens)4,000 lm vs 2,300 lm+74%
- Contrast ratio (dynamic / claimed)1,000,000:1 vs 10,000:1100×
- HDMI inputs2 vs 12×
- Largest image size300″ vs 200″+50%
- Weight3.9 kg vs 5.2 kg+33%
Why is Horizon Ultra better than 4K400STx?
- Light source life4,000 h vs 25,000 h6.2×
- Built-in speakers (total output)10 W vs 24 W2.4×
- Automatic keystone correctionNo · 4K400STx: Yes
- Ethernet (LAN)No · 4K400STx: Yes
- Power consumption320 W vs 300 W+7%
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 + LED hybrid |
| Brightness (ANSI / ISO lumens) | 4,000 lm | 2,300 lm |
| Contrast ratio (dynamic / claimed) | 1,000,000:1 | 10,000:1 |
| HDR support | Yes | Yes |
| HDR formats | — | HDR10, HLG, Dolby Vision |
| Dolby Vision | — | Yes |
| Motion interpolation (MEMC) | Yes | Yes |
| 3D playback | Yes | Yes |
| Gaming | ||
| Input lag | — | 18 ms |
| Maximum refresh rate | 120 Hz | — |
| Game / low-latency mode | Yes | Yes |
| Lens & placement | ||
| Throw ratio | 0.5:1 | 1.2:1 |
| Throw ratio (zoomed in) | — | 1.5:1 |
| Throw type | Short throw (0.4–1.0:1) | Standard throw (1.0:1 and longer) |
| Distance for a 100″ 16:9 image | 1.11 m | 2.66 m |
| Smallest image size | 33″ | 40″ |
| Largest image size | 300″ | 200″ |
| Optical zoom | — | 1.25× |
| Lens shift | None | None |
| Autofocus | — | Yes |
| Keystone correction | Yes | Yes |
| Automatic keystone correction | No | Yes |
| Obstacle avoidance | — | Yes |
| Automatic screen fit | — | Yes |
| Sound | ||
| Built-in speakers (total output) | 10 W | 24 W |
| DTS | — | Yes |
| Smart & streaming | ||
| Smart platform | — | Android TV |
| Built-in smart platform | — | Yes |
| Wi-Fi | — | Yes |
| Bluetooth | — | Yes |
| AirPlay | — | Yes |
| Chromecast built-in | — | Yes |
| Internal storage | — | 32 GB |
| Connectivity | ||
| HDMI inputs | 2 | 1 |
| HDMI version | 2 | — |
| HDMI eARC | — | Yes |
| USB port | Yes | Yes |
| Ethernet (LAN) | No | Yes |
| VGA input | No | No |
| Audio output | Yes | Yes |
| Battery, power & lifetime | ||
| Power consumption | 320 W | 300 W |
| Light source life | 4,000 h | 25,000 h |
| Light source life (eco mode) | 15,000 h | 25,000 h |
| Design & noise | ||
| Fan noise | 28 dB | 28 dB |
| Fan noise (eco mode) | 24 dB | 30 dB |
| Weight | 3.9 kg | 5.2 kg |
| Width | 315 mm | 224 mm |
| Height | 118 mm | 170 mm |
| Depth | 270 mm | 265 mm |
| Colours | White | Beige |
