Between the W5800 and UHD35STx, the W5800 comes out ahead in light source, while the UHD35STx wins on brightness and short-throw. Overall, the W5800 scores 73.9 and the UHD35STx scores 89.1 on our Mars Score.
Which should you buy?
The UHD35STx is the clear pick on raw spec strength, leading by 15.2 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 W5800 if you care most about light source. The biggest gaps in its favor are light source.
Pick the UHD35STx if you care most about brightness and short-throw. Its strongest claims are brightness, short-throw.
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 BenQ - W5800 wins
- ▲Light source: Laser (vs Lamp).
Why Optoma - UHD35STx wins
- ▲Brightness — 38.46% more. 3600 lm vs 2600 lm.
- ▲Short-throw: true (vs false).
Spec comparison
Image
| Spec | BenQ - W5800 | Optoma - UHD35STx |
|---|---|---|
| Resolutionⓘ | 4K | 4K |
| Brightness | 2600 lm | 3600 lmlead |
| Contrast | 2000000:1 | 1000000:1 |
| Light source | Laserlead | Lamp |
| Short-throw | false | truelead |
Smart & Connectivity
| Spec | BenQ - W5800 | Optoma - UHD35STx |
|---|---|---|
| Smart OS | None | None |
| HDMI inputs | 2 | 2 |
| Built-in speakers | false | truelead |
Frequently asked
Spec-level deep dives
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