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Dreame X40 Ultra vs iRobot Roomba Combo j9+
The Dreame X40 Ultra wins with a score of 8.4/10. Best for: Mid-to-large hard-floor homes wanting flagship mopping at a discount.
Winner
Dreame X40 Ultra
8.4/10$900
Last-gen flagship with class-leading mopping, now half its launch price.
Read full review
iRobot Roomba Combo j9+
7.6/10$899
The premium Roomba with the best pet-waste avoidance in the industry, but its basic wipe-only mopping falls short of Roborock and Dreame flagships.
Read full reviewScore Comparison
Dreame X40 UltraiRobot Roomba Combo j9+
Overall
8.47.6
Hard Floor
9.28.2
Carpet
8.57.8
Mopping
9.46.0
Navigation
8.68.0
Noise
7.57.0
Smart Features
8.37.5
Maintenance
7.88.0
Specifications
| Dreame X40 Ultra | Spec | iRobot Roomba Combo j9+ |
|---|---|---|
| $900 | Price | $899 |
| 12000 | Suction (Pa) | 5500 |
| 6400 | Battery (mAh) | 4460 |
| 65.0 | Noise (dB) | 67.0 |
| — | Dustbin (ml) | — |
| — | Water Tank (ml) | — |
| — | Mop Lift (mm) | — |
| — | Height (mm) | — |
| — | Weight (kg) | — |
| LiDAR + 3D Structured Light | Navigation | vSLAM Camera |
| ✅ | Self-Empty | ✅ |
| ✅ | Self-Wash Mop | ❌ |
| ✅ | Self-Dry Mop | ❌ |
| ✅ | AI Obstacle | ✅ |
The Verdict
The Dreame X40 Ultra is the better choice with an overall score of 8.4/10 — best for mid-to-large hard-floor homes wanting flagship mopping at a discount. The iRobot Roomba Combo j9+ is more affordable at $899 vs $900.