Comparison

Roborock Saros 20 vs Dreame X40 Ultra vs Dreame X50 Ultra Complete

Detailed Technical Comparison

Best Score

1 / 9

Roborock Saros 20

8,5

Overall score

View on Amazon View Specifications

Best value for money

1 / 8

Dreame X40 Ultra

7,5

Overall score

View on Amazon View Specifications

1 / 10

Dreame X50 Ultra Complete

8,3

Overall score

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Scores

Roborock Saros 20

Overall score 8,5

Power and Battery 8,6

Brushing System 7,7

Mopping System 7,9

Cleaning Base 7,7

Navigation and Intelligence 9,7

Dreame X40 Ultra

Overall score 7,5

Power and Battery 6,2

Brushing System 7,9

Mopping System 7,2

Cleaning Base 7,4

Navigation and Intelligence 8,9

Dreame X50 Ultra Complete

Overall score 8,3

Power and Battery 7,0

Brushing System 9,1

Mopping System 7,2

Cleaning Base 8,1

Navigation and Intelligence 9,5

Detailed Technical Comparison

Key features organised by category

General Information

Roborock Saros 20

Dreame X40 Ultra

Dreame X50 Ultra Complete

Brand Diferente ?	Roborock Saros 20: Roborock	Dreame X40 Ultra: Dreame	Dreame X50 Ultra Complete: Dreame
Release date Diferente ?	Roborock Saros 20: February 2026	Dreame X40 Ultra: 2024	Dreame X50 Ultra Complete: 2025

Power and Battery

Roborock Saros 20

Dreame X40 Ultra

Dreame X50 Ultra Complete

Suction power Diferente ?	Roborock Saros 20: 36.000 Pa	Dreame X40 Ultra: 12.000 Pa	Dreame X50 Ultra Complete: 20.000 Pa
Battery capacity ?	Roborock Saros 20: 6.400 mAh	Dreame X40 Ultra: 6.400 mAh	Dreame X50 Ultra Complete: 6.400 mAh
Declared runtime Diferente ?	Roborock Saros 20: —	Dreame X40 Ultra: 194 min	Dreame X50 Ultra Complete: 180 mins
Fast battery charging ?	Roborock Saros 20: Sí	Dreame X40 Ultra: Sí	Dreame X50 Ultra Complete: Sí

Brushing System

Roborock Saros 20

Dreame X40 Ultra

Dreame X50 Ultra Complete

Main brush Diferente ?	Roborock Saros 20: DuoDivide Anti-Tangle Hair Brush	Dreame X40 Ultra: Simple Silicone Brush	Dreame X50 Ultra Complete: Dual HyperStream Anti-Tangle Hair Brush
Liftable main brush ?	Roborock Saros 20: Sí	Dreame X40 Ultra: Sí	Dreame X50 Ultra Complete: Sí
Liftable side brush ?	Roborock Saros 20: Sí	Dreame X40 Ultra: Sí	Dreame X50 Ultra Complete: Sí
Extendable side brush ?	Roborock Saros 20: Sí	Dreame X40 Ultra: Sí	Dreame X50 Ultra Complete: Sí
Anti-tangle side brush ?	Roborock Saros 20: Sí	Dreame X40 Ultra: Sí	Dreame X50 Ultra Complete: Sí
Skirting board brush ?	Roborock Saros 20: No	Dreame X40 Ultra: No	Dreame X50 Ultra Complete: No

Mopping System

Roborock Saros 20

Dreame X40 Ultra

Dreame X50 Ultra Complete

Mopping type Diferente ?	Roborock Saros 20: Two Rotating Mops 200 RPM 13N	Dreame X40 Ultra: Two Rotating Mops 180 RPM	Dreame X50 Ultra Complete: Two Rotating Mops 180 RPM
Mop extension Diferente ?	Roborock Saros 20: Sí	Dreame X40 Ultra: Yes, with RoboSwing movement	Dreame X50 Ultra Complete: Yes, with RoboSwing movement
Mop lifting Diferente ?	Roborock Saros 20: Yes, 12-22 mm	Dreame X40 Ultra: Yes, 10.5 mm	Dreame X50 Ultra Complete: Yes, 10.5 mm
Floor mopping temperature Diferente ?	Roborock Saros 20: Warm Water	Dreame X40 Ultra: Cold water	Dreame X50 Ultra Complete: Cold water
Remove mops at base ?	Roborock Saros 20: Sí	Dreame X40 Ultra: Sí	Dreame X50 Ultra Complete: Sí
Mop dirt detection ?	Roborock Saros 20: Sí	Dreame X40 Ultra: Sí	Dreame X50 Ultra Complete: Sí
Floor dirt detection ?	Roborock Saros 20: Sí	Dreame X40 Ultra: Sí	Dreame X50 Ultra Complete: Sí
Steam mopping ?	Roborock Saros 20: No	Dreame X40 Ultra: No	Dreame X50 Ultra Complete: No

Cleaning Base

Roborock Saros 20

Dreame X40 Ultra

Dreame X50 Ultra Complete

Auto-emptying of dust bin ?	Roborock Saros 20: Sí	Dreame X40 Ultra: Sí	Dreame X50 Ultra Complete: Sí
Mop washing Diferente ?	Roborock Saros 20: Yes, with hot water at 100°C	Dreame X40 Ultra: Yes, with hot water at 70°C	Dreame X50 Ultra Complete: Yes, with hot water at 80°C
Mop drying Diferente ?	Roborock Saros 20: Yes, with hot air at 55°C	Dreame X40 Ultra: Yes, with hot air at 45°C	Dreame X50 Ultra Complete: Yes, with hot air at 45°C
Washing tray self-cleaning Diferente ?	Roborock Saros 20: Yes, with hot water at 100°C	Dreame X40 Ultra: Yes, 2nd generation	Dreame X50 Ultra Complete: Yes, 3rd generation
UV disinfection Diferente ?	Roborock Saros 20: No	Dreame X40 Ultra: No	Dreame X50 Ultra Complete: Sí
Detergent tank ?	Roborock Saros 20: Sí	Dreame X40 Ultra: Sí	Dreame X50 Ultra Complete: Sí
Automatic mop changing ?	Roborock Saros 20: No	Dreame X40 Ultra: No	Dreame X50 Ultra Complete: No
Dust bag capacity Diferente ?	Roborock Saros 20: 2.5 L	Dreame X40 Ultra: 3.2 L	Dreame X50 Ultra Complete: 3.2 L
Clean water tank Diferente ?	Roborock Saros 20: 4 L	Dreame X40 Ultra: 4.5 L	Dreame X50 Ultra Complete: 4.5 L
Dirty water tank Diferente ?	Roborock Saros 20: 3 L	Dreame X40 Ultra: 4 L	Dreame X50 Ultra Complete: 4 L
Plumbing connection kit Diferente ?	Roborock Saros 20: No	Dreame X40 Ultra: Yes (purchased separately)	Dreame X50 Ultra Complete: Yes (purchased separately)
Integrated plumbing connection ?	Roborock Saros 20: No	Dreame X40 Ultra: No	Dreame X50 Ultra Complete: No

Navigation and Intelligence

Roborock Saros 20

Dreame X40 Ultra

Dreame X50 Ultra Complete

Navigation system Diferente ?	Roborock Saros 20: StarSight 2.0	Dreame X40 Ultra: 360° LiDAR turret	Dreame X50 Ultra Complete: 360° Retractable LiDAR
Obstacle avoidance ?	Roborock Saros 20: Sí	Dreame X40 Ultra: Sí	Dreame X50 Ultra Complete: Sí
AI camera ?	Roborock Saros 20: Yes, dual	Dreame X40 Ultra: Yes, dual	Dreame X50 Ultra Complete: Yes, dual
Front 3D laser sensor ?	Roborock Saros 20: Sí	Dreame X40 Ultra: Sí	Dreame X50 Ultra Complete: Sí
No. of recognised obstacles Diferente ?	Roborock Saros 20: 300	Dreame X40 Ultra: 120	Dreame X50 Ultra Complete: 200
Pet recognition ?	Roborock Saros 20: Sí	Dreame X40 Ultra: Sí	Dreame X50 Ultra Complete: Sí
Cleaning behind curtains ?	Roborock Saros 20: Sí	Dreame X40 Ultra: Sí	Dreame X50 Ultra Complete: Sí
Remote camera access ?	Roborock Saros 20: Sí	Dreame X40 Ultra: Sí	Dreame X50 Ultra Complete: Sí
Night vision LED ?	Roborock Saros 20: Sí	Dreame X40 Ultra: Sí	Dreame X50 Ultra Complete: Sí
AI intelligent cleaning Diferente ?	Roborock Saros 20: Yes, SmartPlan 3.0	Dreame X40 Ultra: Yes, CleanGenius 2.0	Dreame X50 Ultra Complete: Yes, CleanGenius 2.0
AI stain recognition ?	Roborock Saros 20: Sí	Dreame X40 Ultra: Sí	Dreame X50 Ultra Complete: Sí
CPU / Algorithm Diferente ?	Roborock Saros 20: ?	Dreame X40 Ultra: AI Sage 11.0 Quad-core	Dreame X50 Ultra Complete: AI Sage 13.0 Octa-core

Advanced Features

Roborock Saros 20

Dreame X40 Ultra

Dreame X50 Ultra Complete

Ability to overcome steps Diferente ?	Roborock Saros 20: Single step 45 mm - Double step 88 mm	Dreame X40 Ultra: 22 mm	Dreame X50 Ultra Complete: Single step 42 mm - Double step 60 mm
Robotic arm ?	Roborock Saros 20: No	Dreame X40 Ultra: No	Dreame X50 Ultra Complete: No
Integrated own voice assistant Diferente ?	Roborock Saros 20: Sí	Dreame X40 Ultra: No	Dreame X50 Ultra Complete: Sí
Compatible with voice assistants (Alexa, Google Home...) ?	Roborock Saros 20: Sí	Dreame X40 Ultra: Sí	Dreame X50 Ultra Complete: Sí
Matter compatible ?	Roborock Saros 20: Sí	Dreame X40 Ultra: Sí	Dreame X50 Ultra Complete: Sí

Robot Tanks

Roborock Saros 20

Dreame X40 Ultra

Dreame X50 Ultra Complete

Robot dust bin Diferente ?	Roborock Saros 20: 270 ml	Dreame X40 Ultra: 300 ml	Dreame X50 Ultra Complete: 395 ml
Robot water tank Diferente ?	Roborock Saros 20: 69 ml	Dreame X40 Ultra: 80 ml	Dreame X50 Ultra Complete: 80 ml

Robot Dimensions

Roborock Saros 20

Dreame X40 Ultra

Dreame X50 Ultra Complete

Robot diameter Diferente ?	Roborock Saros 20: 353 mm	Dreame X40 Ultra: 350 mm	Dreame X50 Ultra Complete: 350 mm
Robot height Diferente ?	Roborock Saros 20: 79.8 mm	Dreame X40 Ultra: 97 mm	Dreame X50 Ultra Complete: 89 mm

Base Dimensions

Roborock Saros 20

Dreame X40 Ultra

Dreame X50 Ultra Complete

Base width Diferente ?	Roborock Saros 20: 381 mm	Dreame X40 Ultra: 340 mm	Dreame X50 Ultra Complete: 340 mm
Base height Diferente ?	Roborock Saros 20: 488 mm	Dreame X40 Ultra: 590.5 mm	Dreame X50 Ultra Complete: 590.5 mm
Base depth Diferente ?	Roborock Saros 20: 475 mm	Dreame X40 Ultra: 456.7 mm	Dreame X50 Ultra Complete: 456.7 mm