Introduction
We're looking at two high-end models that represent the best from each manufacturer in 2025 and 2026. The Dreame X50 Ultra Blanca arrives as a comprehensive offering from Dreame, a brand that has established itself by providing competitive technology at competitive prices. The Roborock Qrevo Edge 2, launched in May 2026, is the response from the world's leading robot vacuum brand, known for the reliability of its devices and the quality of its app.
We're dealing with two robots with complete multifunctional bases: auto-emptying, hot water mop washing and hot air drying. Both incorporate dual cameras with artificial intelligence, retractable laser navigation and advanced mopping systems with extendable rotating mops. The difference isn't in whether or not they have the main functions, but in how they execute them and in some technical details that can make a difference to the user experience.
Power and Suction
The difference in suction power is significant. The Roborock Qrevo Edge 2 develops 25,000 Pa, a figure that exceeds the Dreame X50 Ultra Blanca by 5,000 Pa. In practice, this translates to greater capacity to extract embedded dirt from carpets and to pick up heavier particles or those stuck to the floor.
The main brushing system also differs. The Dreame incorporates the dual HyperStream brush, a design with two brushes anchored at one end that considerably reduces hair tangles. The Roborock opts for its DuoDivide anti-tangle brush, which pushes hairs towards the central gap to facilitate direct suction. Both systems are designed for homes with pets, although they work in different ways.
Where the Dreame X50 Ultra has the advantage is in the liftable side brush. This model can raise the side brush during mopping, preventing it from getting unnecessarily wet and improving efficiency on wet surfaces. The Roborock Qrevo Edge 2 doesn't have this function, although it does have an extendable and anti-tangle side brush, just like the Dreame. Both models raise the main brush when mopping.
Mopping
Both devices use two rotating mops, but there are important nuances. The Dreame X50 Ultra Blanca includes the Roboswing system, which allows the robot to perform a swinging movement to get the mop under overhangs and low furniture. The Roborock Qrevo Edge 2 also extends its mops to better reach edges, but without that additional movement.
Mop lift is slightly higher on the Roborock: 12 mm compared to the Dreame's 10.5 mm. It may seem like little, but those extra millimetres help to better protect medium-pile carpets when the robot changes surfaces.
A notable difference is in the mopping water temperature. The Roborock Qrevo Edge 2 mops with warm water, which improves the dissolution of greasy stains and general floor cleaning. The Dreame X50 Ultra uses cold water. However, the Dreame base washes the mops with hot water, just like the Roborock, and both dry with hot air to prevent bad odours and bacteria.
Both robots automatically remove the mops at the base when you only want to vacuum, and both detect dirt on both the mops and the floor to re-mop or re-wash when necessary.
Navigation System
Here we find cutting-edge technology in both cases. Both feature retractable LiDAR navigation, dual cameras with artificial intelligence, front 3D laser sensor and LED for night vision. Both recognise pets, curtains and allow remote access to the camera from the app.
The difference lies in recognition capability. The Roborock Qrevo Edge 2 identifies up to 280 different obstacles thanks to its SmartPlan 3.0 system, whilst the Dreame X50 Ultra Blanca with its CleanGenius technology recognises 200. In complex homes with many objects on the floor, the Roborock may have a more precise response.
The Dreame specifies that it uses the AI Sage 13.0 Octa-core processor, although the Roborock doesn't publicly detail its CPU. Both integrate intelligent AI cleaning and stain recognition.
Autonomy and Battery
The Dreame X50 Ultra Blanca has a 6,400 mAh battery that offers up to 180 minutes of autonomy. The Roborock Qrevo Edge 2, with 5,200 mAh, reaches 188 minutes. It's curious that with less capacity it achieves more autonomy, which points to better energy management of the system.
For large homes, both offer sufficient autonomy. The Dreame may have an advantage in very intensive cleaning sessions or in maximum power mode, where the greater battery capacity can make a difference.
Smart Functions
The Roborock Qrevo Edge 2 can overcome obstacles up to 20 mm in height, a capability that facilitates passage between rooms with small level changes, door thresholds or thick carpets. The Dreame X50 Ultra Blanca only specifies that it overcomes simple steps, without stating the maximum height.
This difference can be decisive in homes with uneven floors or high-pile carpets. The Roborock has more freedom of movement in these cases.
Both models include their own voice assistant and compatibility with external assistants such as Alexa or Google Home.
Multifunctional Cleaning Base
Both bases are complete multifunctional units: they auto-empty the dust bin, wash the mops with hot water and dry them with hot air. But the Dreame X50 Ultra Blanca incorporates two additional functions that the Roborock Qrevo Edge 2 doesn't have: UV disinfection and a detergent tank.
UV disinfection helps eliminate bacteria in the washing tray, something useful if you're concerned about deep hygiene. The detergent tank allows the base to add cleaning product automatically during mop washing, improving effectiveness without manual intervention.
The Dreame also offers an optional kit for connection to plumbing, although it must be purchased separately and doesn't come integrated as standard. The Roborock doesn't have this option.
In terms of capacities, the Dreame X50 Ultra has a 3.2-litre dust bag compared to the Roborock's 2.7 litres. The clean water tanks are 4.5 litres in the Dreame and 4 litres in the Roborock; dirty water is stored in 4 litres and 3.5 litres respectively. Small differences but ones that can extend the maintenance interval in the Dreame model.
Both bases have a self-cleaning system for the washing tray. The Dreame boasts third generation, whilst the Roborock specifies version 2.0.
Dimensions
The Roborock Qrevo Edge 2 measures 79.8 mm in height, almost a centimetre less than the Dreame X50 Ultra Blanca's 89 mm. This can make the difference in homes with low furniture, sofas or beds with little clearance from the floor. The Roborock has more options for getting under these spaces.
The diameter is practically identical: 352 mm for the Roborock and 350 mm for the Dreame. Neither has an advantage in tight spaces.
The bases also differ. The Dreame's is taller (590.5 mm compared to 521 mm) but less deep (456.7 mm compared to 487 mm). Both are 340 mm wide. Depending on the available space, one or the other may fit better.
The Dreame robot's dust bin is 395 ml, considerably more generous than the Roborock's 240 ml. The Dreame's water tank reaches 80 ml, whilst the Roborock has 67 ml. Differences that aren't critical as both have a multifunctional base, but which can reduce trips to the base in long sessions.
Real-World User Experience
In large homes, the Dreame X50 Ultra Blanca can better take advantage of its higher capacity battery and its larger tanks. UV disinfection and the automatic detergent tank automate maintenance more. If you have pets, its dual HyperStream brush works very well against hair, although the Roborock's DuoDivide is also effective.
The Roborock Qrevo Edge 2 stands out in homes with low furniture thanks to its 79.8 mm height. Its ability to overcome 20 mm obstacles makes it more versatile on uneven floors. The greater suction power (25,000 Pa) and warm water mopping improve deep cleaning. Recognition of 280 obstacles gives it an advantage in homes with many objects.
For those seeking total automation and extra disinfection, the Dreame offers more functions in the base. If you prefer efficiency in pure cleaning, greater navigation capability and access to confined spaces, the Roborock may be more interesting.
Conclusion: Which to Choose?
Choose the Dreame X50 Ultra Blanca if… you value battery autonomy, want UV disinfection in the base, are interested in the automatic detergent tank and prefer larger tanks both in the robot and in the base. Also if the liftable side brush seems useful to you or if you're considering buying the plumbing connection kit in the future. It's a comprehensive option for those seeking maximum automation and don't have height restrictions under furniture.
Choose the Roborock Qrevo Edge 2 if… you need to pass under low furniture frequently, have floors with level changes or thick carpets that require overcoming 20 mm, prefer greater suction power for demanding carpets or care about mopping with warm water. Also if you value the greater obstacle recognition (280 versus 200) and trust Roborock's reputation as the world's leading brand. The better battery management will give you slightly more autonomy despite having fewer mAh.
Both are high-end robots with cutting-edge technology. The choice depends on whether you prioritise extra functions in the base and greater storage capacity (Dreame), or efficiency in cleaning, access to low spaces and superior navigation capability (Roborock).
