Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Anker - Nebula Cosmos Laser SE | BenQ - W5800 |
|---|---|---|
| Brightness | 1800 lm | 2600 lm |
| Resolution | 1080p | 4K |
Between the Nebula Cosmos Laser SE and W5800, the Nebula Cosmos Laser SE comes out ahead in several specs, while the W5800 wins on brightness / resolution. Overall, the Nebula Cosmos Laser SE scores 49.4 and the W5800 scores 71.1 on our Mars Score.
Which should you buy?
The W5800 is the clear pick on raw spec strength, leading by 21.7 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 Nebula Cosmos Laser SE does not pull ahead on any single popular-comparison spec — its strengths sit in the spec-table groups rather than the headline advantages.
Pick the W5800 if you care most about brightness / resolution. Its strongest claims are brightness, resolution. The single most decisive one: Brightness — 44.44% more. 2600 lm vs 1800 lm.
Both ship with comparable light source, short-throw, so those specs do not separate the two — focus on the differences below.
Bottom line: the W5800 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: Anker - Nebula Cosmos Laser SE or BenQ - W5800?
BenQ - W5800 leads the current Mars Score by 21.7 points.The more useful decision is the trade-off behind that result: compare brightness, resolution against the way you will actually use the product.
Choose Anker - Nebula Cosmos Laser SE if…
Anker - Nebula Cosmos Laser SE does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
Choose BenQ - W5800 if…
BenQ - W5800 has the measurable edge on brightness lumens, resolution.
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 Anker - Nebula Cosmos Laser SE wins
- No decisive advantages.
Why BenQ - W5800 wins
- ▲Brightness — 44.44% more. 2600 lm vs 1800 lm.
- ▲Resolution: 4K (vs 1080p).
Spec comparison
Image
| Spec | Anker - Nebula Cosmos Laser SE | BenQ - W5800 |
|---|---|---|
| Resolutionⓘ | 1080p | 4Klead |
| Brightnessⓘ | 1800 lm | 2600 lmlead |
| Contrast | 2000:1 | 2000000:1 |
| Light source | Laser | Laser |
| Short-throw | false | false |
Smart & Connectivity
| Spec | Anker - Nebula Cosmos Laser SE | BenQ - W5800 |
|---|---|---|
| Smart OS | Google TV | None |
| HDMI inputs | 1 | 2lead |
| Built-in speakers | truelead | false |