Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Epson - EcoTank ET-2850 | Pantum - BM5100ADW |
|---|---|---|
| Pages/min (mono) | 10.5 | 40 |
| Color | true | false |
| ADF | false | true |
| Pages/min (color) | 5 | 0 |
Between the EcoTank ET-2850 and BM5100ADW, the EcoTank ET-2850 comes out ahead in color / pages/min (color), while the BM5100ADW wins on pages/min (mono) / adf. Overall, the EcoTank ET-2850 scores 63.4 and the BM5100ADW scores 82.7 on our Mars Score.
Which should you buy?
The BM5100ADW is the clear pick on raw spec strength, leading by 19.3 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 EcoTank ET-2850 if you care most about color / pages/min (color). The biggest gaps in its favor are color, pages/min (color). The single most decisive one: Has Color.
Pick the BM5100ADW if you care most about pages/min (mono) / adf. Its strongest claims are pages/min (mono), adf. The single most decisive one: Pages/min (mono) — 280.95% more. 40 vs 10.5.
Both ship with comparable auto duplex, airprint, so those specs do not separate the two — focus on the differences below.
Bottom line: the BM5100ADW 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: Epson - EcoTank ET-2850 or Pantum - BM5100ADW?
Pantum - BM5100ADW leads the current Mars Score by 19.3 points.The more useful decision is the trade-off behind that result: compare pages/min (mono), pages/min (color), color against the way you will actually use the product.
Choose Epson - EcoTank ET-2850 if…
Epson - EcoTank ET-2850 has the measurable edge on color, ppm color.
Choose Pantum - BM5100ADW if…
Pantum - BM5100ADW has the measurable edge on ppm mono, has adf.
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 Epson - EcoTank ET-2850 wins
- ▲Has Color.
- ▲Pages/min (color): 5 vs 0.
Why Pantum - BM5100ADW wins
- ▲Pages/min (mono) — 280.95% more. 40 vs 10.5.
- ▲Has ADF.
Spec comparison
Spec
| Spec | Epson - EcoTank ET-2850 | Pantum - BM5100ADW |
|---|---|---|
| Type | Inkjet AIO | Laser AIO |
| Color | truelead | false |
| Pages/min (mono) | 10.5 | 40lead |
| Pages/min (color) | 5lead | 0 |
| Resolution | 5760x1440 dpi | 1200x1200 dpi |
| Max paper size | Letter | Letter |
Features
| Spec | Epson - EcoTank ET-2850 | Pantum - BM5100ADW |
|---|---|---|
| Auto duplex | true | true |
| ADF | false | truelead |
| Wi-Fiⓘ | true | true |
| AirPrint | true | true |