Dreame's X40 Ultra puts dual spinning mop pads, 12,000 Pa of suction, and a larger dust bag behind a much lower asking price, making it the practical pick for most homes with a mix of carpet and hard floors. Roborock's S8 MaxV Ultra counters with a dual rubber brush setup that resists hair tangles and a taller 20 mm mop lift for carpet-heavy layouts. Go Dreame for scrubbing power and overall value, Roborock if long pet hair wrapping around a single brush roll is your recurring headache.
Two well-equipped docks, two very different mopping philosophies, and a price gap wide enough to change the whole conversation. The Dreame X40 Ultra uses dual spinning pads that press and scrub the floor, and it currently costs a fraction of what the Roborock S8 MaxV Ultra asks. Roborock answers with a vibrating main pad backed by a small rotating edge mop, plus a dual rubber brush and anti-tangle design that pet owners tend to appreciate. Both handle LiDAR mapping, multi-level maps, no-go zones, and automatic dustbin emptying. So the decision comes down to how you clean, what you're cleaning up, and how much you want to spend.
Dreame X40 Ultra
out of 10Roborock S8 MaxV Ultra
The overall ratings land close, 8.3 for the Dreame against 8.0 for the Roborock, so neither is a runaway. Cleaning goes to the Roborock at 7.3 versus 6.8, helped by its dual brush setup. Navigation is nearly even at 8.0 and 7.8, and features are essentially tied at 9.5 and 9.6. Value is where they split hard: 9.4 for the Dreame versus 5.5 for the Roborock, driven by the large price difference between the two.
Start with the mop hardware, because that shapes daily results. The Dreame spins two pads against the floor with 32 moisture levels to dial in, which is a stronger scrubbing approach than the Roborock's vibrating main pad paired with a small rotating edge mop and 4 water levels. Brush design flips the advantage: Roborock runs dual rubber brushes with anti-tangle treatment, so long hair is less likely to wrap, versus Dreame's single rubber roller. Suction favors the Dreame at 12,000 Pa against 10,000 Pa, and its 3.2 L dust bag beats the 2.5 L bag for longer stretches between changes. Then there's warranty coverage, 3 years for the Dreame against 1 year for the Roborock, plus the sizable price gap in Dreame's favor.
The Dreame pulls harder at 12,000 Pa against 10,000 Pa and holds slightly more debris in its 300 mL onboard bin versus 270 mL. Roborock's dual rubber brushes make up ground on agitation, so the gap in real cleaning is narrower than the Pa numbers alone imply.
Dual spinning pads on the X40 Ultra apply active pressure and rotation, which cleans dried spills better than the S8 MaxV Ultra's vibrating pad and supplementary edge mop. Roborock's counterpoint is a 20 mm mop lift versus 10.5 mm, giving it more clearance over thick carpet, plus a slightly larger onboard water tank.
For pulling fur out of rugs, the Dreame's 12,000 Pa and 3.2 L dust bag mean stronger lift and fewer bag swaps than the Roborock's 10,000 Pa and 2.5 L bag. Roborock's anti-tangle dual brush is the trade-off, cutting down on hair wrapped around the roller for households with long-haired pets.
Both use the same combination of LiDAR mapping, AI, camera, and 3D structured light to spot obstacles like socks and cords. The Dreame clears slightly taller thresholds at 22 mm against 20 mm, and it lifts its side brush 10 mm to keep it out of trouble along edges.
Both docks empty the robot automatically, but the Dreame's 3.2 L dust bag runs longer between changes than the Roborock's 2.5 L bag. The X40 Ultra also detaches its mop pads on its own before heading onto carpet, so you don't get damp rugs after a mixed-floor run.
The Dreame carries a 6,400 mAh battery against the Roborock's 5,200 mAh, which is a real advantage in larger homes where the robot has to work through several rooms before docking. Both return to charge and resume, so bigger capacity mostly means fewer interruptions.
This one is a wash. Both work with Amazon Alexa, Google Assistant, and Apple, both support no-go zones and multi-level maps, and the Roborock adds built-in voice commands for basic instructions without pulling out your phone.
| Feature | Dreame X40 Ultra | Roborock S8 MaxV Ultra |
|---|---|---|
| Anti-Tangle | No | Yes |
| Main Brush Type | Single (rubber) | Dual (rubber) |
| Mop Type | Dual spinning mop pads | Vibrating mop pad + rotating edge mop |
| Battery Life | 6,400 mAh | 5,200 mAh |
| Liftable Side Brush | Yes | No |
| Mop Moisture Levels | 32 | 4 |
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For most buyers, the Dreame X40 Ultra is the sensible call: stronger suction, better mop scrubbing, a bigger dust bag, a longer warranty, and a far lower price. The Roborock earns its place in homes fighting constant hair tangles or plush carpet, where its dual brush and taller mop lift do real work.
