Introduction
The Roborock Qrevo CurvX arrives on the market in 2025 as a premium range proposition, whilst the Xiaomi X20 Max was launched in 2024 with a more balanced approach. We're talking about two robots with a complete multifunction base, capable of vacuuming and mopping with almost total autonomy thanks to automatic mop washing and drying. The most evident difference is apparent in the technical specifications: the Roborock model opts for maximum power and advanced technology, whilst the Xiaomi offers solid performance in a more compact package.
The Qrevo CurvX is designed for large homes where abundant power, extended autonomy and the ability to overcome obstacles with ease are needed. The X20 Max is more suitable for medium-sized homes seeking efficient mopping without needing to reach extreme suction figures.
Power and Suction
The difference in suction power is enormous. The Roborock Qrevo CurvX reaches 22000 Pa, a figure that places it amongst the most powerful robots on the current market. The Xiaomi X20 Max remains at 8000 Pa, sufficient for most everyday situations but clearly below when we're talking about thick carpets or ingrained dirt.
Regarding the brushing system, the Qrevo CurvX features the DuoDivide Antienredos, specifically designed to push hair and strands towards the central suction gap. The X20 Max is equipped with the TriCut 3.0, which combines bristles with blades to cut tangling hair. Both systems include anti-tangle technology as standard, which facilitates maintenance.
The main brush of the Roborock model can be lifted during mopping, something the Xiaomi doesn't offer. This allows mopping without dragging dry dirt residue that may remain on the brush. Additionally, the Qrevo CurvX incorporates an extendable and anti-tangle side brush, two features absent on the X20 Max. The extendable side brush notably improves cleaning in corners and edges, where dust tends to accumulate more.
Mopping
Both models use a twin rotating mop system, currently the most effective configuration for domestic mopping. Both wash the mops with hot water in the base, although Roborock specifies 80°C temperature. Drying is also carried out with hot air in both cases, with 45°C on the Qrevo CurvX.
Mop lifting works differently. The Roborock can lift the mops between 7 and 17 mm, adapting to different situations. The Xiaomi offers a fixed 10 mm. In practice, this difference allows the Roborock model to travel better over thin carpets without wetting them.
Both units include mop extension to better reach edges, although the FlexiArm system on the Qrevo CurvX is more developed. The great advantage of the Roborock model lies in its dirt detection, both on the mops themselves and on the floor. This means it can go over particularly dirty areas again or rewash the mops when it detects they're still soiled. The X20 Max lacks these functions, so it follows more standard cleaning patterns.
Navigation System
The Qrevo CurvX features a retractable LIDAR system, which contributes to reducing its overall height. The Xiaomi X20 Max uses a conventional LIDAR 3.0 turret. Both models incorporate a front 3D laser sensor and LED for night vision, guaranteeing precise navigation even in low light.
The important difference appears in the camera system. The Roborock integrates a dual AI camera capable of recognising up to 108 different types of obstacles, including pets specifically. Additionally, it allows remote access to the camera, functioning as a surveillance system when not cleaning. The Xiaomi does without an AI camera, relying solely on its laser sensors for obstacle detection.
The RR Mason 11.0 processor on the Qrevo CurvX manages intelligent cleaning through SmartPlan 2.0, which adapts routes and power according to the type of dirt detected. The X20 Max also features AI intelligent cleaning, although without specifying the processor level it uses.
Autonomy and Battery
The 6400 mAh battery on the Roborock Qrevo CurvX provides up to 220 minutes of continuous operation. The Xiaomi X20 Max is equipped with 5200 mAh for 120 minutes of autonomy. We're talking about almost double the working time, something fundamental in large homes or when several mopping cycles with mop washing need to be completed.
This difference in autonomy is especially relevant considering that the Roborock has much more suction power. Maintaining 22000 Pa for longer requires very efficient energy management. For homes over 150 square metres, the extended autonomy makes a real difference in day-to-day use.
Smart Functions
The ability to overcome obstacles varies considerably. The Qrevo CurvX can navigate barriers between 30 and 40 mm in height, whilst the X20 Max is limited to 20 mm. This directly affects the ability to pass over thick carpets, grouped cables or small level differences between rooms.
The Roborock model includes its own voice assistant described as "simple", useful for basic commands without needing to use your mobile. The Xiaomi doesn't incorporate this function.
Multifunction Cleaning Base
Both bases offer similar capacities in terms of tanks: 2.5 litre dust bag and 4 litre clean water tank in both cases. Roborock specifies 3 litres for dirty water, a detail that Xiaomi doesn't provide.
The fundamental difference is in the tray self-cleaning system. The Qrevo CurvX features version 3.0 already installed as standard, which automatically cleans the tray where the mops are washed. This drastically reduces manual maintenance and prevents dirt accumulation in the base itself. The X20 Max doesn't have this function, requiring periodic manual cleaning of the tray.
Neither model includes a detergent tank, UV disinfection nor plumbing connection options.
Dimensions
The Roborock Qrevo CurvX measures 353 mm in diameter and just 79.8 mm in height. The Xiaomi X20 Max has a 350 mm diameter but reaches 97 mm tall. Those 17 mm of difference are crucial for passing under low furniture, sofas or radiators. The Roborock model accesses spaces where the Xiaomi simply doesn't fit.
The Qrevo CurvX base occupies 450 mm in all three dimensions, forming a compact cube. The X20 Max base is narrower (340 mm wide) but considerably taller (563 mm), with 420 mm depth. Depending on available space, one configuration may fit better than the other. The Roborock base needs more floor space but less height, ideal for placing under worktops or low shelving.
Real-World Usage Experience
For large homes, the Roborock Qrevo CurvX offers evident advantages. Its 220-minute autonomy allows cleaning large surfaces without intermediate recharges, whilst the 22000 Pa suction guarantees results on thick carpets and rugs. The reduced height facilitates cleaning under furniture where more dust accumulates precisely because they're less accessible areas.
If you live with pets, the DuoDivide Antienredos system on the Qrevo CurvX together with its also anti-tangle side brush minimise maintenance. Specific pet detection through AI helps avoid unpleasant surprises. The Xiaomi, although it incorporates the TriCut 3.0 anti-tangle brush, doesn't recognise pets specifically.
The X20 Max is more appropriate for medium-sized flats where 8000 Pa power is sufficient. Its narrower base fits better in reduced spaces, although its greater height must be considered. The absence of dirt detection means relying on fixed schedules, which works well when dirt is predictable.
The Roborock's tray self-cleaning system notably reduces maintenance tasks. You only need to empty tanks and check brushes occasionally. With the Xiaomi you'll have to manually clean the washing tray from time to time to prevent residue accumulation.
Conclusion: Which to Choose?
Choose the Roborock Qrevo CurvX if you're seeking maximum performance without compromises. Ideal for large houses where extended autonomy makes the difference, homes with thick carpets requiring high power, or if you have pets and want to minimise maintenance. Its reduced height makes it the best option when you need to clean under low furniture. The dirt detection system and tray self-cleaning justify the investment if you value real autonomy and minimum maintenance.
Choose the Xiaomi X20 Max if your home has moderate dimensions and mainly hard floors or thin carpets. It offers solid mopping performance with hot water mop washing and drying, sufficient to maintain effective regular cleaning. Its narrower base facilitates placement in tight spaces, provided you have sufficient height. It represents a balanced option when you don't need extreme power figures or maximum autonomy, but do want a complete vacuuming and mopping system with a multifunction base.
