Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | BenQ - X3100i | ViewSonic - X2-4K |
|---|---|---|
| Brightness | 3300 lm | 2900 lm |
| Light source | LED | Laser |
| Short-throw | false | true |
Between the X3100i and X2-4K, the X3100i comes out ahead in brightness, while the X2-4K wins on light source / short-throw. Overall, the X3100i scores 76.6 and the X2-4K scores 73.5 on our Mars Score.
Which should you buy?
The X3100i edges ahead on the Mars Score (76.6 vs 73.5), but the 3.1-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the X3100i if you care most about brightness. The biggest gaps in its favor are brightness. The single most decisive one: Brightness — 13.79% more. 3300 lm vs 2900 lm.
Pick the X2-4K if you care most about light source / short-throw. Its strongest claims are light source, short-throw. The single most decisive one: Light source: Laser (vs LED).
Both ship with comparable resolution, so those specs do not 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 says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: BenQ - X3100i or ViewSonic - X2-4K?
BenQ - X3100i leads the current Mars Score by 3.1 points.The more useful decision is the trade-off behind that result: compare brightness, light source, short-throw against the way you will actually use the product.
Choose BenQ - X3100i if…
BenQ - X3100i has the measurable edge on brightness lumens.
Choose ViewSonic - X2-4K if…
ViewSonic - X2-4K has the measurable edge on light source, is short throw.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why BenQ - X3100i wins
- ▲Brightness — 13.79% more. 3300 lm vs 2900 lm.
Why ViewSonic - X2-4K wins
- ▲Light source: Laser (vs LED).
- ▲Short-throw: true (vs false).
Spec comparison
Image
| Spec | BenQ - X3100i | ViewSonic - X2-4K |
|---|---|---|
| Resolutionⓘ | 4K | 4K |
| Brightnessⓘ | 3300 lmlead | 2900 lm |
| Contrast | 600000:1 | 3000000:1 |
| Light source | LED | Laserlead |
| Short-throw | false | truelead |
Smart & Connectivity
| Spec | BenQ - X3100i | ViewSonic - X2-4K |
|---|---|---|
| Smart OS | Android TV | Google TV |
| HDMI inputs | 2 | 2 |
| Built-in speakers | true | true |