Home Phone comparison Oppo Find X7 Ultra and Xiaomi Redmi K90 - Which is better?

Oppo Find X7 Ultra vs Xiaomi Redmi K90

89 out 100
Oppo Find X7 Ultra
VS
91 out 100
Xiaomi Redmi K90
Oppo Find X7 Ultra
Xiaomi Redmi K90

Compared 2 smartphones : Oppo Find X7 Ultra Manufactured in January, 2024, with display 6.82 with chipsetQualcomm Snapdragon 8 Gen 3, vs Xiaomi Redmi K90, Manufactured in October, 2025 with chipsetQualcomm Snapdragon 8 Elite. 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 Oppo Find X7 Ultra
  • Larger display: 6.82in
  • Supports DisplayPort
Reasons to choose Xiaomi Redmi K90
  • Lighter design: 206g vs 221g
  • Higher battery capacity: 7100mAh vs 5000mAh

Versions

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

Review

Key Specs Oppo Find X7 Ultra and Xiaomi Redmi K90
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:
Oppo Find X7 Ultra
vs
Xiaomi Redmi K90

Display

Display quality comparison
Type AMOLED OLED
Size 6.82 in 6.59 in
Resolution 1440x3168 pixels 1156x2510 pixels
Aspect ratio 20:9 19.5:9
Pixel density 510 ppi n/a
Refresh rate 120 Hz 120 Hz
Adaptive refresh rate Yes Yes (1-120 Hz)
Max brightness 4500 nits n/a
HDR support Yes Dolby Vision Yes, Dolby Vision
Touch Sampling Rate 240 Hz 480 Hz
Screen-to-body ratio 89.7 % 89.9 %
Features - DCI-P3
- Always-On Display
- DC dimming		 - DCI-P3
- Always-On Display
- DC dimming
Display test
Peak brightness (auto)
Oppo Find X7 Ultra
1160 nits
Xiaomi Redmi K90
n/a
sRGB gamut97.9 %n/a
PWM (Flicker)91 Hzn/a
Response time2 msn/a
Contrast∞ Infiniten/a
Sources: NotebookCheck [Oppo Find X7 Ultra]

Design & Build

Design and ergonomics comparison
Height 164.3 mm (6.47 in) 157.49 mm (6.2 in)
Width 76.2 mm (3 in) 75.25 mm (2.96 in)
Thickness 9.5 mm (0.37 in) 8 mm (0.31 in)
Weight 221 g (7.8 oz) 206 g (7.27 oz)
Water resistance IP68 IP68
Cooling system Vapor chamber Vapor chamber
Back panel Glass n/a
Frame Metal Metal
Colors - Black
- Blue
- Brown		 - White
- Black
- Blue
- Purple
Fingerprint sensor Yes In-Display Yes, In-Display
Screen-to-body ratio
Oppo Find X7 Ultra
89.7 %
Xiaomi Redmi K90
89.9 %

Performance

Testing Oppo Find X7 Ultra and Xiaomi Redmi K90 In benchmarks
Processor
Chipset Qualcomm Snapdragon 8 Gen 3 Qualcomm Snapdragon 8 Elite
Max Frequency 3300 MHz 4470 MHz
CPU Cores 8 (1 + 3 + 2 + 2) 8 (2 + 6)
Architecture - 2/2.27 (Cortex-A520)
- 2/2.96 (Cortex-A720)
- 3/3.15 (Cortex-A720)
- 1/3.3 (Cortex-X4)		 - 6/3.53 (Oryon (Phoenix M))
- 2/4.32 (Oryon (Phoenix L))
Process TSMC TSMC
Transistor Size 4 nm 3 nm
Neural Processor Hexagon Hexagon
Graphics Adreno 750 Adreno 830
GPU Cores 1536 1536
GPU Frequency 903-1000 MHz 1100 MHz
FLOPS 2774 GFLOPS 3379.2 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Oppo Find X7 Ultra
2228
Xiaomi Redmi K90
2856
Geekbench 6 (Multi-Core)
Oppo Find X7 Ultra
7352
Xiaomi Redmi K90
8814
Geekbench 6 (Single-Core)22282856
Geekbench 6 (Multi-Core)73528814
Geekbench Compute (GPU)n/a24427
Sources: Geekbench v6 [Oppo Find X7 Ultra], [Xiaomi Redmi K90]
AnTuTu 10
AnTuTu 10
Oppo Find X7 Ultra
2041218
Xiaomi Redmi K90
3218814
CPU442026916055
GPU8699421150313
Memory383796513749
UX345454638697
NanoReview Score20412183218814
3DMark Wild Life
3DMark Wild Life
Oppo Find X7 Ultra
16808
Xiaomi Redmi K90
n/a
Sources: 3DMark [Oppo Find X7 Ultra]
PCMark 3.0
PCMark 3.0
Oppo Find X7 Ultra
14310
Xiaomi Redmi K90
n/a
Writing score19438n/a
Web score11488n/a
Video editing6234n/a
Data manipulation14484n/a
NanoReview Score14310n/a

Memory

RAM
RAM Size - 12 GB
- 16 GB		 12 GB
Memory Type LPDDR5X LPDDR5X
Memory Frequency 4266 MHz 5300 MHz
Channels 4 4
Storage
Storage Capacity- 256 GB
- 512 GB		256 GB
Storage TypeUFS 4.0UFS 4.1
Memory CardNoNo

Software

OS Android 14 (Upgradeable to Android 15) Android 16
UI Skin ColorOS 15 HyperOS 3

Battery

Volume 5000 mAh 7100 mAh
Max Charging Power 100 W 100 W
Battery Type Li-Po Silicon Carbon (Si/C)
Removable No No
Wireless Charging Yes (50 W) No
Reverse Charging Yes (Wireless) Yes
Fast Charging Yes (70% in 15 min) Yes
Full Charge Time 0:25 h n/a
Battery Life Test
Battery Life
Oppo Find X7 Ultra
25:51
Xiaomi Redmi K90
n/a
Web Browsing11:41 hn/a
Video Playback17:53 hn/a
Games05:12 hn/a
Standby Mode105 hn/a

Main camera

Matrix 50 MP 50 MP
Photo resolution 8192x6144 pixels 8192x6144 pixels
Zoom Optical, 6x Optical, 2.5x
Flash LED Dual LED
Stabilization Optical Optical
8K Recording No Yes (Up to 30 fps)
4K Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
1080p Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
Slow Motion 480 fps (720p) 960 fps (1080p)
Wide-angle lens 123 ° 120 °
Lenses count Standard: 50 MP
Telephoto: 50 MP
Telephoto: 50 MP
Ultra-wide: 50 MP		 Standard: 50 MP
Telephoto: 50 MP
Ultra-wide: 50 MP
Features - Bokeh effect
- Pro mode
- RAW support		 - Bokeh effect
- Pro mode
Main lens
Matrix50 MP50 MP
Aperturef/1.8f/1.9
Focal length23 mmn/a
SensorSony LYT-900Omnivision OV50 Light Hunter 800
Sensor size1/01/1.55
Pixel size1.6 μm1 μm
AutofocusLaser autofocusPhase autofocus (Dual Pixel)
StabilizationOpticalOptical
Telephoto
Matrix50 MP50 MP
Aperturef/2.6f/3.0
Focal length65 mmn/a
SensorSony IMX890Omnivision OV50M
Sensor size1/1.561/2.76
Pixel size1 μm0.64 μm
StabilizationOpticalOptical
Ultra-wide lens
Matrix50 MP50 MP
Aperturef/2.0f/2.2
Focal length14 mmn/a
SensorSony LYT-600Omnivision OV08F
Sensor size1/1.95n/a
Pixel size0.7 μmn/a
StabilizationDigitalDigital
Main camera DxOMark results
Photo quality
Oppo Find X7 Ultra
156
Xiaomi Redmi K90
n/a
Video quality
Oppo Find X7 Ultra
156
Xiaomi Redmi K90
n/a
Overall camera score
Oppo Find X7 Ultra
157
Xiaomi Redmi K90
n/a
Bokeh85n/a
Preview79n/a
Zoom156n/a
Sources: DxOMark [Oppo Find X7 Ultra]

Front camera

Matrix 32 MP 20 MP
Photo resolution 6560x4928 pixels n/a
Aperture f/2.4 f/2.2
Focal length 21 mm n/a
Sensor Sony LYT-506 Omnivision OV20B
Sensor size 1/2.74 1/4
Pixel size 0.8 μm 0.8 μm
Autofocus Phase autofocus n/a
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 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 5.4 5.4
Bluetooth features LE LE
USB type USB Type-C USB Type-C
USB version 3.2 n/a
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort Yes DP 1.4 n/a
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
2G BandsGSM 850, 900, 1800MHzn/a
3G BandsWCDMA 1, 2, 4, 5, 8n/a
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B12/B17/B18/B19/B20/B26/B28/B66)n/a
5G SupportYesYes

Sound

Speakers Stereo n/a
3.5 mm Jack No No
FM Radio No No
Speaker Test
Max Volume
Oppo Find X7 Ultra
89.4 dB
Xiaomi Redmi K90
n/a

Other

Class Flagship Flagship
Announced January, 2024 yr October, 2025 yr
Release Date January, 2024 yr October, 2025 yr
Launch Price ($) 850 n/a
MSRP ($) n/a 370
Sensors - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included Yes 100 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