Between the X40 Ultra and Cube, the X40 Ultra comes out ahead in suction and water tank, while the Cube wins on several specs. Overall, the X40 Ultra scores 70.7 and the Cube scores 61.3 on our Mars Score.
Which should you buy?
The X40 Ultra is the clear pick on raw spec strength, leading by 9.4 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 X40 Ultra if you care most about suction and water tank. The biggest gaps in its favor are suction, water tank, battery life, among others.
The Cube similarly doesn't carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable mopping, lidar, self-empty base, so those specs don't separate the two — focus on the differences below.
Bottom line: the X40 Ultra is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Dreame - X40 Ultra wins
- ▲Suction — 50.00% more. 12000 Pa vs 8000 Pa.
- ▲Water tank — 17.39% more. 270 ml vs 230 ml.
- ▲Battery life — 16.67% more. 210 min vs 180 min.
- ▲Has AI obstacle avoidance.
Why Yeedi - Cube wins
- No decisive advantages.
Spec comparison
Cleaning
| Spec | Dreame - X40 Ultra | Yeedi - Cube |
|---|---|---|
| Suction | 12000 Palead | 8000 Pa |
| Mopping | true | true |
| Water tank | 270 mllead | 230 ml |
| Dustbin | 350 mllead | 300 ml |
| Carpet detection | true | true |
Navigation
| Spec | Dreame - X40 Ultra | Yeedi - Cube |
|---|---|---|
| Lidar | true | true |
| Camera navigation | truelead | false |
| AI obstacle avoidance | truelead | false |
| Max climb | 60 mmlead | 20 mm |
Autonomy
| Spec | Dreame - X40 Ultra | Yeedi - Cube |
|---|---|---|
| Battery life | 210 minlead | 180 min |
| Self-empty base | true | true |
| Self-wash mop | true | true |
| Self-dry mop | true | true |
| Noise | 65 dB | 65 dB |
Frequently asked
Which has stronger suction, X40 Ultra or Cube?+
X40 Ultra delivers 12000 Pa vs 8000 Pa.
Do X40 Ultra or Cube mop?+
Both can mop.
Which has a self-emptying base, X40 Ultra or Cube?+
Both ship with a self-emptying base.
Spec-level deep dives
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