Home Phone comparison OnePlus Ace 6 Ultra and Xiaomi Redmi K90 Max - Which is better?

OnePlus Ace 6 Ultra vs Xiaomi Redmi K90 Max

89 out 100
OnePlus Ace 6 Ultra
VS
89 out 100
Xiaomi Redmi K90 Max
OnePlus Ace 6 Ultra
Xiaomi Redmi K90 Max

Compared 2 smartphones : OnePlus Ace 6 Ultra Manufactured in April, 2026, with display 6.78 with chipsetMediaTek Dimensity 9500, vs Xiaomi Redmi K90 Max, Manufactured in April, 2026 with chipsetMediaTek Dimensity 9500. Below are specs, tests, pros and cons for each device

  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery Life
  6. Cameras
  7. Comments (0)

Key Differences

Device key advantages
Reasons to choose OnePlus Ace 6 Ultra
  • Higher pixel density: 450ppi
  • Lighter design: 217g vs 227g
  • Higher battery capacity: 8600mAh vs 8550mAh
  • Newer Bluetooth version: 6.0 vs 5.4
Reasons to choose Xiaomi Redmi K90 Max
  • Larger display: 6.83in
  • Supports Dolby Atmos

Versions

Available versions and configurations
Memory Options - 12/256 GB
- 12/512 GB
- 16/256 GB
- 16/512 GB
- 16/1024 GB		 - 12/256 GB
- 12/512 GB
- 16/256 GB
- 16/512 GB
- 16/1024 GB

Review

Key Specs OnePlus Ace 6 Ultra and Xiaomi Redmi K90 Max
Display
Color accuracy, sharpness & brightness
Camera
Main & front camera tests
Performance
App & system performance
Games
3D gaming performance
Battery
Battery life, charging speed & type
Connectivity
Connectivity features
NanoReview Score
Overall score by NanoReview
Adjust each parameter’s importance to find the best match for you.
Customize your score
Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison
Smartphones:
OnePlus Ace 6 Ultra
vs
Xiaomi Redmi K90 Max

Display

Display quality comparison
Type AMOLED AMOLED
Size 6.78 in 6.83 in
Resolution 1272x2772 pixels 1280x2772 pixels
Aspect ratio 19.5:9 19.5:9
Pixel density 450 ppi 447 ppi
Refresh rate 165 Hz 165 Hz
Adaptive refresh rate Yes Yes
Max brightness 800 nits n/a
HDR support Yes, Dolby Vision Yes, Dolby Vision
Touch Sampling Rate 300 Hz 480 Hz
Screen-to-body ratio 89.7 % 90.2 %
Features - DCI-P3
- Always-On Display
- DC dimming		 - DCI-P3
- Always-On Display
- DC dimming

Design & Build

Design and ergonomics comparison
Height 162.5 mm (6.4 in) 162.9 mm (6.41 in)
Width 77.5 mm (3.05 in) 77.9 mm (3.07 in)
Thickness 8.5 mm (0.33 in) 8.2 mm (0.32 in)
Weight 217 g (7.65 oz) 227 g (8.01 oz)
Water resistance IP69 IP69
Cooling system Vapor chamber Active fan
Back panel Glass Plastic
Frame Metal Metal
Colors - Black
- Gray		 - Black
- Silver
- Blue
Fingerprint sensor Yes, In-Display Yes, In-Display
Screen-to-body ratio
OnePlus Ace 6 Ultra
89.7 %
Xiaomi Redmi K90 Max
90.2 %

Performance

Testing OnePlus Ace 6 Ultra and Xiaomi Redmi K90 Max In benchmarks
Processor
Chipset MediaTek Dimensity 9500 MediaTek Dimensity 9500
Max Frequency 4210 MHz 4210 MHz
CPU Cores 8 (1 + 3 + 4) 8 (1 + 3 + 4)
Architecture - 4/2.7 (C1-Pro)
- 3/3.5 (C1-Premium)
- 1/4.21 (C1-Ultra)		 - 4/2.7 (C1-Pro)
- 3/3.5 (C1-Premium)
- 1/4.21 (C1-Ultra)
Process TSMC TSMC
Transistor Size 3 nm 3 nm
Neural Processor MediaTek NPU 990 MediaTek NPU 990
GeekBench v6
Geekbench 6 (Single-Core)
OnePlus Ace 6 Ultra
3600
Xiaomi Redmi K90 Max
3289
Geekbench 6 (Multi-Core)
OnePlus Ace 6 Ultra
10616
Xiaomi Redmi K90 Max
9958
Geekbench 6 (Single-Core)36003289
Geekbench 6 (Multi-Core)106169958
Sources: Geekbench v6 [OnePlus Ace 6 Ultra], [Xiaomi Redmi K90 Max]
AnTuTu 10
AnTuTu 10
OnePlus Ace 6 Ultra
3429868
Xiaomi Redmi K90 Max
3803420
CPU10111041099801
GPU13116641375013
Memory383286513398
UX723814815208
NanoReview Score34298683803420

Memory

RAM
RAM Size 12 GB 12 GB
Memory Type LPDDR5X LPDDR5X
Memory Frequency 5333 MHz n/a
Channels 4 4
Storage
Storage Capacity256 GB256 GB
Storage TypeUFS 4.1UFS 4.1
Memory CardNoNo

Software

OS Android 16 Android 16
UI Skin ColorOS 16 HyperOS 3

Battery

Volume 8600 mAh 8550 mAh
Max Charging Power 120 W 100 W
Battery Type Silicon Carbon (Si/C) Silicon Carbon (Si/C)
Removable No No
Wireless Charging No No
Reverse Charging Yes Yes
Fast Charging Yes Yes

Main camera

Matrix 50 MP 50 MP
Photo resolution 8192x6144 pixels 8192x6144 pixels
Zoom Digital Digital
Flash Dual LED Dual LED
Stabilization Optical Optical
8K Recording No Yes (Up to 30 fps)
4K Recording Yes (Up to 120 fps) Yes (Up to 60 fps)
1080p Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
Slow Motion 240 fps (1080p) 960 fps (1080p)
Wide-angle lens 112 ° n/a
Lenses count Standard: 50 MP
Ultra-wide: 8 MP		 Standard: 50 MP
Ultra-wide: 8 MP
Features - Bokeh effect
- Pro mode
- RAW support		 - Bokeh effect
- Pro mode
Main lens
Matrix50 MP50 MP
Aperturef/1.8f/1.7
Focal length23 mm24 mm
Sensorn/aOmnivision OV50
Sensor size1/1.55 (0.65)1/1.55 (0.65)
Pixel size1 μm1 μm
AutofocusPhase autofocusPhase autofocus
StabilizationOpticalOptical
Ultra-wide lens
Matrix8 MP8 MP
Aperturef/2.2f/2.2
Focal length16 mm15 mm
Sensor sizen/a1/4.0 (0.25)
Pixel size1.12 μm1.14 μm
StabilizationDigitalDigital

Front camera

Matrix 16 MP 20 MP
Photo resolution 4608x3456 pixels 5184x3888 pixels
Aperture f/2.4 f/2.2
Focal length 23 mm n/a
Sensor size 1/3 (0.33) n/a
Autofocus No No
Stabilization Digital Digital
Video resolution 1080p (Full HD) at 30 fps 1080p (Full HD) at 60 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be) Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be)
Wi-Fi features - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 6.0 5.4
Bluetooth features LE LE
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort No No
GPS - GPS
- GLONASS
- Beidou
- Galileo
- QZSS		 - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
- NAVIC
NFC* Yes Yes
Infrared Port Yes Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoNo
Hybrid SlotNoNo
5G SupportYesYes

Sound

Speakers n/a 2.1
3.5 mm Jack No No
FM Radio No No
Dolby Atmos No Yes

Other

Class Flagship Flagship
Announced April, 2026 yr April, 2026 yr
Release Date April, 2026 yr April, 2026 yr
MSRP ($) 555 599
Sensors - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included Yes, 120 W Yes, 100 W
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

No clear favorite identified yet; updates may follow as new data arrives.

Survey

Which smartphone would you pick?
0 (0%)
0 (0%)
Total Votes: 0

User comments

Share your opinion or ask questions below