Comparison

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

Detailed Technical Comparison

1 / 8

Dreame X40 Ultra

7,6

Overall score

View on Amazon View Specifications

1 / 10

Dreame X50 Ultra Blanca

8,4

Overall score

View on Amazon View Specifications

Best Score

1 / 9

Roborock Saros 20

8,8

Overall score

View on Amazon View Specifications

Scores

Dreame X40 Ultra

Overall score 7,6

Power and Battery 6,4

Brushing System 7,9

Mopping System 7,8

Cleaning Base 7,4

Navigation and Intelligence 8,9

Dreame X50 Ultra Blanca

Overall score 8,4

Power and Battery 7,3

Brushing System 9,1

Mopping System 7,8

Cleaning Base 8,1

Navigation and Intelligence 9,5

Roborock Saros 20

Overall score 8,8

Power and Battery 9,2

Brushing System 8,9

Mopping System 8,5

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 Blanca

Roborock Saros 20

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

Power and Battery

Dreame X40 Ultra

Dreame X50 Ultra Blanca

Roborock Saros 20

Suction power Diferente ?	Dreame X40 Ultra: 12.000 Pa	Dreame X50 Ultra Blanca: 20.000 Pa	Roborock Saros 20: 36.000 Pa
Battery capacity ?	Dreame X40 Ultra: 6.400 mAh	Dreame X50 Ultra Blanca: 6.400 mAh	Roborock Saros 20: 6.400 mAh
Runtime Diferente ?	Dreame X40 Ultra: 194 min	Dreame X50 Ultra Blanca: 180 min	Roborock Saros 20: —

Brushing System

Dreame X40 Ultra

Dreame X50 Ultra Blanca

Roborock Saros 20

Main brush Diferente ?	Dreame X40 Ultra: Simple Silicone Brush	Dreame X50 Ultra Blanca: Dual HyperStream Anti-Tangle Hair Brush	Roborock Saros 20: DuoDivide Anti-Tangle Hair Brush
Lifting main brush ?	Dreame X40 Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
Lifting side brush ?	Dreame X40 Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
Extendable side brush ?	Dreame X40 Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
Anti-tangle side brush ?	Dreame X40 Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
Cepillo para zocalos ?	Dreame X40 Ultra: No	Dreame X50 Ultra Blanca: No	Roborock Saros 20: No

Mopping System

Dreame X40 Ultra

Dreame X50 Ultra Blanca

Roborock Saros 20

Mopping type Diferente ?	Dreame X40 Ultra: Two Rotating Mops 180 RPM	Dreame X50 Ultra Blanca: 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 Blanca: Yes, with RoboSwing movement	Roborock Saros 20: Sí
Mop lifting Diferente ?	Dreame X40 Ultra: Yes, 10.5 mm	Dreame X50 Ultra Blanca: Yes, 10.5 mm	Roborock Saros 20: Yes, 12-22 mm
Floor mopping temperature Diferente ?	Dreame X40 Ultra: Cold water	Dreame X50 Ultra Blanca: Cold water	Roborock Saros 20: Warm Water
Detach mops at base ?	Dreame X40 Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
Mop dirt detection ?	Dreame X40 Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
Floor dirt detection ?	Dreame X40 Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí

Cleaning Base

Dreame X40 Ultra

Dreame X50 Ultra Blanca

Roborock Saros 20

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

Navigation and Intelligence

Dreame X40 Ultra

Dreame X50 Ultra Blanca

Roborock Saros 20

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

Advanced Features

Dreame X40 Ultra

Dreame X50 Ultra Blanca

Roborock Saros 20

Step-climbing ability Diferente ?	Dreame X40 Ultra: 22 mm	Dreame X50 Ultra Blanca: 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 Blanca: No	Roborock Saros 20: No
Built-in voice assistant Diferente ?	Dreame X40 Ultra: No	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
External voice assistant (Alexa, Google Home...) ?	Dreame X40 Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí

Robot Tanks

Dreame X40 Ultra

Dreame X50 Ultra Blanca

Roborock Saros 20

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

Robot Dimensions

Dreame X40 Ultra

Dreame X50 Ultra Blanca

Roborock Saros 20

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

Base Dimensions

Dreame X40 Ultra

Dreame X50 Ultra Blanca

Roborock Saros 20

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