Between the X3100i and UHZ65UST, the X3100i comes out ahead in several specs, while the UHZ65UST wins on brightness and light source. Overall, the X3100i scores 84.6 and the UHZ65UST scores 87.6 on our Mars Score.
Which should you buy?
The UHZ65UST edges ahead on the Mars Score (84.6 vs 87.6), but the 3.0-point gap is small enough that the right pick comes down to which spec advantages matter to you.
The X3100i 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 light source. Its strongest claims are brightness, light source, short-throw.
Both ship with comparable resolution, so those specs don't separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.
Why BenQ - X3100i wins
- No decisive advantages.
Why Optoma - UHZ65UST wins
- ▲Brightness — 6.06% more. 3500 lm vs 3300 lm.
- ▲Light source: Laser (vs LED).
- ▲Short-throw: true (vs false).
Spec comparison
Image
| Spec | BenQ - X3100i | Optoma - UHZ65UST |
|---|---|---|
| Resolutionⓘ | 4K | 4K |
| Brightness | 3300 lm | 3500 lmlead |
| Contrast | 600000:1 | 2500000:1 |
| Light source | LED | Laserlead |
| Short-throw | false | truelead |
Smart & Connectivity
| Spec | BenQ - X3100i | Optoma - UHZ65UST |
|---|---|---|
| Smart OS | Android TV | None |
| HDMI inputs | 2 | 3lead |
| Built-in speakers | true | true |
Frequently asked
Spec-level deep dives
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