Between the UHD35STx and Horizon Ultra, the UHD35STx comes out ahead in brightness and short-throw, while the Horizon Ultra wins on light source. Overall, the UHD35STx scores 89.1 and the Horizon Ultra scores 69.1 on our Mars Score.
Which should you buy?
The UHD35STx is the clear pick on raw spec strength, leading by 20.0 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the UHD35STx if you care most about brightness and short-throw. The biggest gaps in its favor are brightness, short-throw.
Pick the Horizon Ultra if you care most about light source. Its strongest claims are light source.
Both ship with comparable resolution, so those specs don't separate the two — focus on the differences below.
Bottom line: the UHD35STx is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Optoma - UHD35STx wins
- ▲Brightness — 56.52% more. 3600 lm vs 2300 lm.
- ▲Short-throw: true (vs false).
Why XGIMI - Horizon Ultra wins
- ▲Light source: Laser (vs Lamp).
Spec comparison
Image
| Spec | Optoma - UHD35STx | XGIMI - Horizon Ultra |
|---|---|---|
| Resolutionⓘ | 4K | 4K |
| Brightness | 3600 lmlead | 2300 lm |
| Contrast | 1000000:1 | 2400:1 |
| Light source | Lamp | Laserlead |
| Short-throw | truelead | false |
Smart & Connectivity
| Spec | Optoma - UHD35STx | XGIMI - Horizon Ultra |
|---|---|---|
| Smart OS | None | Android TV |
| HDMI inputs | 2 | 2 |
| Built-in speakers | true | true |
Spec-level deep dives
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