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Appliances head-to-head

Dreame X40 UltravsRoborock Q Revo

Dreame X40 Ultra vs Roborock Q Revo, scored side by side on all 5 Appliances axes. Overall 7.7 to 8.0.

Dreame X40 Ultra

Dreame

7.7

Spec sheet pushed hard, and it shows in edges and corners other machines leave dirty.

Price and availability change constantly, so we don't quote them here — the link opens the current Amazon listing.

Roborock Q Revo

Roborock

8.0

Keeps the part of the flagship dock that actually earns its keep, at roughly half the money.

Price and availability change constantly, so we don't quote them here — the link opens the current Amazon listing.

Where they diverge

Two products can average the same and still feel different, because the shape of the scores differs. Left of center is Dreame X40 Ultra, right is Roborock Q Revo.

Dreame X40 Ultra

Axis

Roborock Q Revo

  • 9.0
    Performance
    7.8
  • 7.5
    Value
    8.8
  • 7.2
    Durability
    7.8
  • 8.2
    Ease of use
    8.5
  • 6.5
    Quietness
    7.2

Which one to pick

Take the Dreame X40 Ultra

Leads on Performance.

  • The grime line along your baseboards never seems to go away
  • You want maximum spec for the money and will manage the trade-offs

Take the Roborock Q Revo

Leads on Value, Durability, Ease of use and Quietness.

  • You want a self-washing dock without stepping up to flagship money
  • Hard floors and low-pile rugs, nothing thick
  • It is your first robot vacuum

What each one gets wrong

Dreame X40 Ultra

  • You need a fast local repair rather than a mail-in one
  • App stability and translation quality bother you

Roborock Q Revo

  • Cables, socks, and toys are usually on the floor
  • Thick carpet with pet hair worked deep into it

Specs, side by side

SpecDreame X40 UltraRoborock Q Revo
Suction12,000Pa5,500Pa
MoppingSpinning pads with side extensionDual spinning pads, auto-lift
DockEmpties, hot-water washes, hot-air driesEmpties, washes, warm-air dries
Edge handlingMop swings out along walls—
Obstacle avoidance—LiDAR only

Rankings they both appear in

Questions

Dreame X40 Ultra or Roborock Q Revo — which should I buy?
Roborock Q Revo leads on Value, Durability, Ease of use and Quietness. If Performance matters more to you, take the Dreame X40 Ultra instead.
How far apart are they overall?
Dreame X40 Ultra scores 7.7 and Roborock Q Revo scores 8.0, a gap of 0.3. The total is the plain average of the 5 axes used in Appliances.