BeastCompare

OnePlus Ace 6 Ultra 5G vs Xiaomi 12X: Which One Should You Buy?

OnePlus Ace 6 Ultra 5G edges ahead with a BeastScore of 86.6/100 — but the right choice depends on what matters to you.

Head-to-head
Comparing 2 devicesSwipe ⇄
OnePlus

OnePlus Ace 6 Ultra 5G

OnePlus Ace 6 Ultra 5G
87/ 100
Launch pricePrice on request
Xiaomi · 2021

Xiaomi 12X

Xiaomi 12X
87/ 100
Launch price$599
Head-to-head

OnePlus Ace 6 Ultra 5G wins 3 of 5 categories

Here's exactly where each phone is stronger.

OnePlus Ace 6 Ultra 5G
OnePlus Ace 6 Ultra 5G
3 wins
Xiaomi 12X
Xiaomi 12X
2 wins
At a glance

Bigger shape = better phone.

SpeedCameraBatteryDisplayValue
OnePlus Ace 6 Ultra 5GXiaomi 12X
Category winners

Scores out of 100. How we score

  • SpeedXiaomi 12X
    86
    90
  • CameraXiaomi 12X
    80
    91
  • VideoNot enough data
  • SelfieNot enough data
  • BatteryOnePlus Ace 6 Ultra 5G
    95
    80
  • DisplayOnePlus Ace 6 Ultra 5G
    89
    86
  • ConnectivityNot enough data
  • SecurityNot enough data
  • ValueOnePlus Ace 6 Ultra 5G
    85
    80
Key differences
  • OnePlus Ace 6 Ultra 5G has the bigger battery8,600 mAh vs 4,500 mAh
  • OnePlus Ace 6 Ultra 5G has the bigger screen6.78" vs 6.28"
  • OnePlus Ace 6 Ultra 5G has more RAM16 GB vs 12 GB
See all specs ↓

Why buy each phone

Swipe ⇄
Reasons to buy OnePlus Ace 6 Ultra 5G
  • ✓Bigger 8,600 mAh battery (+4,100 mAh)
  • ✓6.78" display at 120 Hz
Reasons to buy Xiaomi 12X
  • ✓50 MP main camera
  • ✓6.28" display at 120 Hz

Full specifications

Swipe ⇄
SpecificationOnePlus Ace 6 Ultra 5GXiaomi 12X
1. Display & Screen🏆 OnePlus Ace 6 Ultra 5G Wins Display
Screen typeAMOLEDAMOLED
Screen Size6.78"6.28"
Resolution & DensityFHD+ / LTPO AMOLED 2400x1080 (419 ppi)
Refresh Rate120 Hz120 Hz
BrightnessN/A1,100 nits peak
Screen ProtectionNot listedNot listed
2. Platform & Performance🏆 Xiaomi 12X Wins Performance
Chipset / ProcessorDimensity 9500 Snapdragon 870 (7nm)
CPU CoresNot listedNot listed
GPU GraphicsNot listedAdreno 650
Operating SystemAndroid Android 12
3. Memory & Storage
RAM Memory16 GB LPDDR12 GB LPDDR
Internal Storage1024 GB128GB / 256GB
Storage SpeedNot listedNot listed
Card SlotNoNo
4. Main Camera Optics🏆 Xiaomi 12X Wins Camera
Primary Cameraundefined MP, Triple Camera System50 MP, f/1.88, OIS, Sony IMX766
Telephoto ZoomNone (digital zoom only)5 MP (2x optical zoom), f/2.4
Ultrawide CameraN/A13 MP, f/2.4
LiDAR / DepthNoneNone
5. Video
Main Camera Video
Not listed
Not listed
Front Video
Not listed
Not listed
6. Selfie Camera
Selfie Lensundefined MP32 MP, f/2.45
7. Body & Dimensions
DimensionsN/A152.7 x 69.9 x 8.16 mm
WeightN/A176 g
Build MaterialsNot listedNot listed
SIM TypeNot listedNot listed
Water ResistanceNot listedIP53
8. Battery & Charging🏆 OnePlus Ace 6 Ultra 5G Wins Battery
Battery Capacity8,600 mAh4,500 mAh
Wired Fast ChargingFast charging67W wired fast charging
Wireless ChargingNot listedNot listed
Reverse ChargingNot listedNot listed
9. Sound & Audio
LoudspeakerNot listedNot listed
3.5mm Headphone JackNoNo
10. Connectivity
Wi-Fi StandardNot listedWi-Fi 6E
BluetoothNot listed5.2
USB Port & SpeedNot listedUSB-C 2.0
NFCYesYes (contactless payment)
11. Sensors & Security
SensorsNot listedNot listed
Satellite FeaturesNot listedNot listed
12. Colors & Overview
ColorsNot listedNot listed
Launch PricePrice on request$599
Our verdict

OnePlus Ace 6 Ultra 5G wins — BeastScore 86.6/100

The OnePlus Ace 6 Ultra 5G is the better pick for most people thanks to its bigger battery (8,600 mAh vs 4,500 mAh) and bigger screen (6.78" vs 6.28").

Buy OnePlus Ace 6 Ultra 5G if you want

Larger battery: 8,600 mAh vs 4,500 mAh · Larger display: 6.78" vs 6.28"

Buy Xiaomi 12X if you want

Optical telephoto zoom (1 telephoto lens)

Common questions

Which is better: OnePlus Ace 6 Ultra 5G or Xiaomi 12X?

The OnePlus Ace 6 Ultra 5G is the better pick for most people thanks to its bigger battery (8,600 mAh vs 4,500 mAh) and bigger screen (6.78" vs 6.28"). BeastScore: OnePlus Ace 6 Ultra 5G 86.6/100, Xiaomi 12X 86.5/100.

What are the main battery and display differences between OnePlus Ace 6 Ultra 5G and Xiaomi 12X?

OnePlus Ace 6 Ultra 5G has a 6.78-inch display and 8600 mAh battery. Xiaomi 12X has a 6.28-inch display and 4500 mAh battery.

How do OnePlus Ace 6 Ultra 5G and Xiaomi 12X compare for speed?

OnePlus Ace 6 Ultra 5G scores 86/100 for performance; Xiaomi 12X scores 90/100.

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