Roborock Saros 10R vs Dreame X50 Ultra: Comparing Two Top Robot Vacuums

Welcome to our new head‑to‑head comparison series where two robots enter and only one wins. Today’s competition matches the Roborock Saros 10R against the Dreame X50 Ultra, a pair of premium robots that share multi‑functional docks, anti‑tangle engineering and similar price tags. Seven rounds of tests will assign points to each robot that stack to determine the winner at the end. 

Round 1: Features & Specs

Our first competition round is features and specs. On paper, these two robots and their docks are fully loaded.

Both deploy dual spinning mop pads that lift on carpet with one mop pad that extends outward to scrub edges and corners. The robots can also leave their pads parked in the dock for vacuum‑only passes.

An auto‑extending side brush also reaches into corners and edges and retracts for open‑floor sweeps.

Each robots empties dust in a disposable bag in the dock, washes pads with hot water, dries them with warm air and dispenses detergent; the mop trays even self‑clean. Internal sensors flag dirty‑water cycles and trigger extra pad washes or repeat mopping passes.

Both robots have industry-leading threshold climbing. Roborock’s AdaptiLift chassis crosses thresholds up to 40 mm, while Dreame’s retractable legs scale 42 mm on a single step or 60 mm over two‑tiered thresholds, as in sliding doors or other complex floor barriers.

Both of these far outstrip the 20 mm maximum crossing of most robot vacuums, and helps both contenders roam larger floor plans without getting road-blocked (or stuck).

Both robots prioritize low profiles, although they do this in different ways. Dreame, the taller of the two, measures at 3.5 inches on its lowest setting, while the Saros sits at just 3.14 inches.

Each app bundles live video, multi‑floor mapping, no‑mop zones and a voice assistant. A pet‑snapshot feature, when enabled, takes downloadable images of your pet when the robot encounters it during a run, and a quiet “find‑my‑pet” mode lets either robot tour the house while you watch through its camera.

-Feature	Roborock Saros 10 R	Dreame X50 Ultra
Height	3.14 in	3.5 in (LiDAR retracted)
Threshold climb	40 mm single	42 mm single, 60 mm two‑tier
Mop type	Dual spinning pads, auto‑lift, extending mop-head	Dual spinning pads, auto‑lift, extending mop-head
Dock functions	Bagged self‑empty dustbin, hot mop wash, warm air dry, detergent dispense	Bagged self‑empty dustbin, hot mop wash, warm air dry, detergent dispense
Obstacle sensors	RGB camera + dual‑emitter ToF LiDAR	RGB camera + 3‑D structured light
Suction rating (mfr)	22,000 Pa	20,000 Pa
Voice control	On‑board Assistant + Alexa/Google	On‑board Assistant + Alexa/Google

Round 1 Winner: Dreame X50 Ultra

The Dreame X50 takes Round 1 with a total of 4.6 points to the Saros’ feature score of 4.5. Both of these are exceptional scores, but Dreame takes the Features round with its headline-grabbing retracting legs for clearing high or complex thresholds.

Round 2: Mopping Test Results

We take several things into consideration for our mop score, but the two most important tests are the dried‑on stain removal test and the residual‑water check, where we measure how much water the robots leave behind when they mop, since higher water generally means more streaking.

In the dried-on stain test, the Saros 10R lifted the best, posting a 103 score against Dreame’s 80 where the testing average is 93.

Dreame counters by leaving the test floor noticeably drier than both Roborock and the average. This gives the Dreame X50 the advantage in avoiding streaked floors.

Metric	Saros 10R	X50 Ultra	Lab avg
Dried Stain points	103	80	94
Water left (g)	1.1	0.5	1.0
Category score	3.6	3.5	2.7

Round 2 Winner: Roborock Saros 10R

Adding stain and moisture results to the full mopping feature set gives the round to Roborock with 3.6 points and Dreame 3.5 points against an average of 2.7. The tiny margin pulls the match into a dead heat.

Round 3: Obstacle Avoidance

Both robots field advanced cameras for object recognition. Dreame mixes RGB imaging with 3‑D structured light, while Roborock pairs an RGB camera with its StarSight 2.0 dual‑emitter time‑of‑flight LiDAR for precise obstacle detection.

In the obstacle avoidance tests, Roborock skirted everything in its path for a flawless 24/24. This incredible performance made the Saros 10R the obstacle avoidance winner in our mid-2025 Vacuum Wars Awards.

Dreame avoided 20/24. This would be an otherwise excellent score, but in this case, it was hard to compete with perfection.

Round 3 Winner: Roborock Saros 10R

Roborock pockets the category with 5.0 points to Dreame’s 4.2, opening the first big lead of the match.

Metric	Saros 10R	X50 Ultra	Test avg
Technology used
Objects avoided /24	24	20	16.6
Category score	5.0	4.2	3.4

Round 4: Navigation & Mapping

LiDAR navigation guides both robots, but the hardware differs.

The Saros hides its LiDAR, removing the top-mounted component for a permanently low profile, whereas the X50 Ultra raises and lowers its LiDAR so it can fit under low-clearance furniture. Measured by square‑meters‑per‑minute and total coverage, Dreame cleaned slightly faster.

Round 4 Winner: Dreame X50 Ultra

These scores, when all metrics are taken into account, translates to 4.3 points for Dreame and 4.1 points for Roborock, shaving the lead slightly.

Round 5: Battery Life & Efficiency

Both carry 6400mAh batteries to meet their higher suction power and computing needs. Spec sheets list Dreame at 220 minutes and Roborock at 180, but our tests returned different results.

Round 5 Winner: Roborock Saros 10R

Roborock covered more floor per charge, earning 2.8 points for much higher batter efficiency than the Dreame’s 2.1 (average 2.3).

Metric	Saros 10R	X50 Ultra	Category Average
Battery Capacity	6 400 mAh	6 400 mAh	–
Spec-Sheet Runtime (min, Low Power)	180 min	220 min	–
Battery Score	2.8 pts	2.1 pts	2.3 pts

Round 6: Pet Features

We take a few metrics into consideration for pet features, including the ‘search for pets’ option that both robots have in their apps, as mentioned above. Hair management is especially important for pet owners when looking for robot vacuums, so we test for tangles and for hair pickup on carpet.

The Roborock Saros 10R uses a divided main brush that feeds hair through the center to keep it from wrapping around the axel, and the Dreame X50 has a two-brush system that tapers at one end to avoid wraps that way. Both brushes were successful, passing our seven‑inch hair test with 0% hair tangled. (This is compared to a 38% average hair tangles.)

In flattened‑pet‑hair pickup Dreame excelled at 97.5 percent while Roborock managed 91.5 percent.

Round 6 Winner: Roborock Saros 10R

This round was the closest to a tie, but when factoring in Roborock’s other pet features and perfect obstacle avoidance score, Roborock just barely takes the category with a rounded score: 4.5 points to Dreame’s 4.4.

Metric	Saros 10R	X50 Ultra	Test avg
Hair pickup %	91.5	97.5	81
Hair tangles	0%	0%	38%
Category score	4.5	4.4	2.9

Round 7: Overall Vacuuming Performance

Surface pickup on rice, cereal and fine debris posed no challenge for either robot. Bench suction tests put Dreame just under average and Roborock below that, yet both delivered airflow right around the average.

Crevice pickup was a tie, and both robots were equally below average.

The last performance test we will cover is our Carpet deep-clean test, where we embed sand into medium-pile carpe and measure how much of it the robots are able to remove. We have found this test is more important in measuring performance than often-advertised suction ratings. Dreame removed 83 percent of embedded grit and Roborock removed 80 percent, both beating the 75 percent average.

Round 7 Winner: Dreame X50 Ultra

The final round closes with Dreame X50 as the category winner with 3.9 points. Roborock scores 3.7 points.

Metric	Saros 10R	X50 Ultra	Lab avg
Carpet deep clean pickup	80%	83%	75%
Category score	3.7	3.9	3.6

Final Score

After seven intense rounds the Saros 10 R edges the X50 Ultra by just 1.2 points. The margin mirrors their positions on the Vacuum Wars Top‑20 chart, where Roborock held 4.99 stars at the time of testing and Dreame posted 4.89 against a category average of 2.8.

In short, both machines ranked among the best we have ever tested, but Roborock’s cleaner obstacle run, stronger battery efficiency and superior stain removal secure the win.

Category Wins

Roborock Saros 10R	Dreame X50 Ultra
Mopping	Features & Specs
Obstacle Avoidance	Navigation & Mapping
Battery Life & Efficiency	Overall Vacuuming Performance
Pet Features

What the Results Mean for Shoppers

Choose the Roborock Saros 10R if impeccable obstacle avoidance, lower profile and longer runtimes matter most. Opt for the Dreame X50 Ultra if you value faster room coverage, higher threshold climbing and heavier pet‑hair pickup. Either way you’re selecting a top‑tier robot that outclasses standard models across nearly every metric.

For deeper dives, explore our comparison app, filter every spec and score we collect, and bookmark our weekly‑updated Top 20 Robot Vacuums list for the latest rankings.

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