Between the W5800 and UHZ65UST, the W5800 comes out ahead in several specs, while the UHZ65UST wins on brightness and short-throw. Overall, the W5800 scores 73.9 and the UHZ65UST scores 87.6 on our Mars Score.
Which should you buy?
The UHZ65UST is the clear pick on raw spec strength, leading by 13.7 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.
The W5800 doesn't pull ahead on any single popular-comparison spec — its strengths sit in the spec table groups rather than the headline advantages.
Pick the UHZ65UST if you care most about brightness and short-throw. Its strongest claims are brightness, short-throw.
Both ship with comparable resolution, light source, so those specs don't separate the two — focus on the differences below.
Bottom line: the UHZ65UST 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
- No decisive advantages.
Why Optoma - UHZ65UST wins
- ▲Brightness — 34.62% more. 3500 lm vs 2600 lm.
- ▲Short-throw: true (vs false).
Spec comparison
Image
| Spec | BenQ - W5800 | Optoma - UHZ65UST |
|---|---|---|
| Resolutionⓘ | 4K | 4K |
| Brightness | 2600 lm | 3500 lmlead |
| Contrast | 2000000:1 | 2500000:1 |
| Light source | Laser | Laser |
| Short-throw | false | truelead |
Smart & Connectivity
| Spec | BenQ - W5800 | Optoma - UHZ65UST |
|---|---|---|
| Smart OS | None | None |
| HDMI inputs | 2 | 3lead |
| Built-in speakers | false | truelead |
Spec-level deep dives
More from the same brands
vsMars is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. Learn more.