Comparison

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

Detailed Technical Comparison

Dreame X40 Ultra

7,5
Overall score
View on Amazon View Specifications
Best value for money

Dreame X50 Ultra Complete

8,3
Overall score
View on Amazon View Specifications
Best Score

Roborock Saros 20

8,5
Overall score
View on Amazon View Specifications

Scores

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
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

Detailed Technical Comparison

Key features organised by category

General Information

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

Power and Battery

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

Brushing System

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

Mopping System

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

Cleaning Base

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

Navigation and Intelligence

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

Advanced Features

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

Robot Tanks

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

Robot Dimensions

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

Base Dimensions

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

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