Introduction
The Dreame X50s Ultra and the Roborock Qrevo Curv 2 Flow represent two high-end propositions within the robot vacuum market with multifunction base. The Dreame model will arrive in May 2026, whilst the Roborock will do so in February of the same year. We are looking at equipment designed for users seeking complete automation in home cleaning, with the ability to vacuum and mop with hardly any manual intervention.
The Dreame X50s Ultra stands out especially for its suction power of 35,000 Pa, far superior to the market average. The Roborock Qrevo Curv 2 Flow offers 20,000 Pa, a figure more than sufficient for most homes but notably lower. Both include a multifunction base with mop washing and drying, although with important differences in their cleaning systems that we will see throughout this robot vacuum comparison.
Power and Suction
The difference in suction power is one of the most striking aspects between these two models. The Dreame robot vacuum reaches 35,000 Pa, a figure that places it amongst the most powerful on the market. This capacity is especially useful in homes with long-pile carpets or if you live with pets that shed a lot of hair. The Roborock Qrevo Curv 2 Flow, with its 20,000 Pa, remains a powerful unit that responds well in most situations, although the difference may be noticeable on more demanding surfaces.
Regarding the brushing systems, we find different philosophies. The Dreame X50s Ultra incorporates the dual HyperStream brush, designed specifically to prevent hair tangles. The Roborock features the DuoDivide Antienredos system, which pushes hairs towards the centre to facilitate their suction. Both systems are effective, although the Dreame's dual brush approach may offer additional advantages in homes with long-haired pets.
Both models raise the main brush during mopping to avoid interference. However, the Dreame includes an extendable side brush, which improves cleaning in corners and edges. The Roborock does not have this function, although it does have a dual anti-tangle side brush. Both units also raise the side brush during mopping, a detail that helps optimise the wet cleaning process.
Mopping
Here we find substantial differences that may tip the balance according to your needs. The Dreame X50s Ultra uses two rotating mops with Roboswing movement, which allows the robot to make a slight movement to get the mops under overhangs and furniture. The Roborock Qrevo Curv 2 Flow opts for a 270 mm roller that covers more surface area with each pass.
Mop lifting also varies: 10.5 mm on the Dreame versus 15 mm on the Roborock, which also incorporates an additional curving system. This greater lift on the Roborock model may prove advantageous if you have high carpets or uneven floors at home.
A key difference lies in water temperature. The Dreame robot vacuum mops the floor with hot water at 45°C, something that improves the dissolution of grease and adhered dirt. The Roborock uses cold water for floor mopping, although both wash the mops in the base with hot water. In practice, mopping with hot water makes a difference in kitchens or areas with more greasy dirt.
The Dreame X50s Ultra can automatically remove the mops at the base when you only want to vacuum, preventing them from getting wet unnecessarily. The Roborock does not offer this function. Both models detect dirt both on the mops and on the floor to adjust cleaning intensity.
Navigation System
Both robot vacuums integrate LiDAR to map the home with precision. The Dreame features a retractable LiDAR that contributes to reducing the robot's overall height. The Roborock uses a more conventional but equally effective 3D LiDAR turret.
Both units incorporate dual camera with artificial intelligence, front 3D laser sensor, LED for night vision and remote camera access. The main difference lies in recognition capacity: the Dreame identifies up to 280 different objects, whilst the Roborock recognises 200. Although this may seem a minor detail, in homes with many objects or scattered children's toys, this greater recognition capacity can translate into fewer manual interventions.
The Dreame X50s Ultra detects curtains and adjusts its behaviour to avoid getting tangled, a function that the Roborock Qrevo Curv 2 Flow does not include. If you have long curtains that reach the floor, it's worth bearing this in mind. Both recognise pets and have their own artificial intelligence systems: CleanGenius Pro on the Dreame and SmartPlan 3.0 on the Roborock.
Autonomy and Battery
The Dreame X50s Ultra is equipped with a 6,400 mAh battery, superior to the Roborock's 5,200 mAh. In terms of declared autonomy, the Roborock specifies 242 minutes of operation, whilst the Dreame does not provide this specific figure. In any case, the Dreame model's greater battery capacity suggests it will be able to cover large surfaces without needing to recharge mid-session.
For homes over 150 square metres, autonomy becomes a relevant factor. Although both robots automatically return to the base to recharge and continue cleaning, having greater capacity reduces interruptions and speeds up the complete cleaning process.
Smart Functions
The ability to overcome obstacles differs notably. The Dreame X50s Ultra can navigate simple steps, although the exact height is not specified. The Roborock Qrevo Curv 2 Flow overcomes obstacles up to 20 mm, a specific figure that proves useful if you have thick carpets, high thresholds between rooms or small uneven floors.
Both models integrate their own voice assistant and are compatible with Alexa and Google Home. Neither includes a robotic arm, a function that for the moment is only incorporated in some very specific market models.
Multifunction Cleaning Base
Both robot vacuums have a complete multifunction base: auto-emptying of the dust container, mop washing with hot water and drying with hot air. Self-cleaning of the washing tray is present in both, although the Dreame boasts third generation in this system.
The Dreame X50s Ultra includes a detergent tank in the base, something the Roborock does not offer. This allows the Dreame to automatically add cleaning product during mop washing, optimising the result without manual intervention. Additionally, the Dreame has an optional plumbing connection kit that is purchased separately, eliminating the need to manually refill and empty tanks. The Roborock does not have this option.
Regarding capacities, the Dreame's dust bag is 3.2 litres versus the Roborock's 2.7. The clean water tank is slightly larger on the Dreame (4.2 litres versus 4 litres), whilst the dirty water tank is larger on the Roborock (3.5 litres versus 3 litres). Small differences that in practice barely affect daily maintenance.
Dimensions
The robot's height marks a fundamental difference between these models. The Dreame X50s Ultra measures 79.5 mm tall, which allows it to slip under most sofas, beds and low furniture. The Roborock Qrevo Curv 2 Flow reaches 119 mm, almost 40 mm more, which may limit its access to confined spaces. If you have low furniture at home, this difference may be decisive.
The diameter is practically identical: 352 mm on the Dreame and 353 mm on the Roborock. Regarding the bases, the Dreame occupies 390 mm width, 499 mm height and 423 mm depth. The Roborock presents more compact and symmetrical measurements: 450 mm in all three dimensions. Neither base is particularly bulky, although it's advisable to reserve an accessible space near a socket.
Real-World Usage Experience
In large homes, the Dreame X50s Ultra's greater battery and its 35,000 Pa power make it a very competent option. Its ability to mop with hot water and automatically remove the mops adds convenience to daily use. If you have low furniture, its reduced height of 79.5 mm makes the difference compared to other high-end robots.
The Roborock Qrevo Curv 2 Flow stands out for its ability to overcome 20 mm obstacles and its greater mop lift (15 mm). The roller system for mopping covers more surface area with each pass, which can speed up cleaning in open spaces. Its declared autonomy of 242 minutes proves sufficient for most homes.
For homes with pets, both models offer anti-tangle brushes and more than sufficient power. The Dreame has the advantage due to its greater suction power and the dual HyperStream brush. If you also have carpets, the Dreame's extra power may be noticeable in cleaning depth.
Maintenance proves convenient in both cases thanks to the multifunction bases. The Dreame's detergent tank and the option to connect to plumbing further reduce manual tasks. The Roborock, although it does not include these functions, remains a very complete unit that requires little attention.
Conclusion: Which to Choose?
Choose the Dreame X50s Ultra if... you're looking for maximum suction power (35,000 Pa), you need to pass under low furniture thanks to its 79.5 mm height, you value mopping with hot water at 45°C, you want automatic mop removal and you're interested in the integrated detergent tank. Also if you consider the optional plumbing connection kit useful to completely forget about tank maintenance. It's the best option for those seeking total automation and who have pets or demanding carpets.
Choose the Roborock Qrevo Curv 2 Flow if... you prefer a mopping system with a 270 mm roller that covers more surface area, you need to safely overcome obstacles up to 20 mm, you value the greater mop lift (15 mm) to protect high carpets, or you simply trust Roborock's established reputation as a world-leading brand. Its 20,000 Pa power remains excellent for most homes, and its 242-minute autonomy is clearly specified. A balanced and reliable option.
In short, this comparison between the Dreame robot vacuum and the Roborock robot vacuum shows two different philosophies within the high-end range. The Dreame opts for extreme power, reduced height and extra functions such as hot water for mopping. The Roborock focuses on a different mopping system, greater ability to navigate obstacles and the reliability of an established brand. Choosing between one or the other will depend on the specific characteristics of your home and which functions you value most in your day-to-day life.
