Canon - imageCLASS MF656Cdw vs Epson - WorkForce Pro WF-7840
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Canon - imageCLASS MF656Cdw | Epson - WorkForce Pro WF-7840 |
|---|---|---|
| Pages/min (color) | 23 | 12 |
| Pages/min (mono) | 23 | 25 |
Between the imageCLASS MF656Cdw and WorkForce Pro WF-7840, the imageCLASS MF656Cdw comes out ahead in pages/min (color), while the WorkForce Pro WF-7840 wins on pages/min (mono). Overall, the imageCLASS MF656Cdw scores 71.8 and the WorkForce Pro WF-7840 scores 73.1 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (71.8 vs 73.1). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the imageCLASS MF656Cdw if you care most about pages/min (color). The biggest gaps in its favor are pages/min (color). The single most decisive one: Pages/min (color) — 91.67% more. 23 vs 12.
Pick the WorkForce Pro WF-7840 if you care most about pages/min (mono). Its strongest claims are pages/min (mono). The single most decisive one: Pages/min (mono) — 8.70% more. 25 vs 23.
Both ship with comparable color, auto duplex, adf, 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: Canon - imageCLASS MF656Cdw or Epson - WorkForce Pro WF-7840?
Epson - WorkForce Pro WF-7840 leads the current Mars Score by 1.3 points.The more useful decision is the trade-off behind that result: compare pages/min (mono), pages/min (color) against the way you will actually use the product.
Choose Canon - imageCLASS MF656Cdw if…
Canon - imageCLASS MF656Cdw has the measurable edge on ppm color.
Choose Epson - WorkForce Pro WF-7840 if…
Epson - WorkForce Pro WF-7840 has the measurable edge on ppm mono.
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 Canon - imageCLASS MF656Cdw wins
- ▲Pages/min (color) — 91.67% more. 23 vs 12.
Why Epson - WorkForce Pro WF-7840 wins
- ▲Pages/min (mono) — 8.70% more. 25 vs 23.
Spec comparison
Spec
| Spec | Canon - imageCLASS MF656Cdw | Epson - WorkForce Pro WF-7840 |
|---|---|---|
| Type | Laser AIO (color) | Inkjet AIO |
| Color | true | true |
| Pages/min (mono) | 23 | 25lead |
| Pages/min (color) | 23lead | 12 |
| Resolution | 1200x1200 dpi | 4800x2400 dpi |
| Max paper size | Letter | Tabloidlead |
Features
| Spec | Canon - imageCLASS MF656Cdw | Epson - WorkForce Pro WF-7840 |
|---|---|---|
| Auto duplex | true | true |
| ADF | true | true |
| Wi-Fiⓘ | true | true |
| AirPrint | true | true |