Home Phone comparison Vivo iQOO 15 Ultra and Xiaomi Poco X8 Pro - Which is better?

Vivo iQOO 15 Ultra vs Xiaomi Poco X8 Pro

94 out 100
Vivo iQOO 15 Ultra
VS
82 out 100
Xiaomi Poco X8 Pro
Vivo iQOO 15 Ultra
Xiaomi Poco X8 Pro

Compared 2 smartphones : Vivo iQOO 15 Ultra Manufactured in February, 2026, with display 6.85 with chipsetQualcomm Snapdragon 8 Elite Gen 5, vs Xiaomi Poco X8 Pro, Manufactured in March, 2026with chipsetMediaTek Dimensity 8500 Ultra. 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 Vivo iQOO 15 Ultra
  • Larger display: 6.85in
  • Higher pixel density: 508ppi
  • Higher refresh rate: 144Hz
  • Higher battery capacity: 7400mAh vs 6500mAh
  • Supports newer USB: 3.2 vs 2
  • Supports DisplayPort
  • Built-in eSIM
Reasons to choose Xiaomi Poco X8 Pro
  • Lighter design: 201.5g vs 227g
  • Newer Bluetooth version: 6.0 vs 5.4

Versions

Available versions and configurations
Memory Options - 16/256 GB
- 16/512 GB
- 16/1024 GB
- 24/1024 GB		 - 8/256 GB
- 8/512 GB
- 12/512 GB

Review

Key Specs Vivo iQOO 15 Ultra and Xiaomi Poco X8 Pro
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.
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Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison
Smartphones:
Vivo iQOO 15 Ultra
vs
Xiaomi Poco X8 Pro

Display

Display quality comparison
Type AMOLED AMOLED
Size 6.85 in 6.59 in
Resolution 1440x3168 pixels 1268x2756 pixels
Aspect ratio 20:9 19.5:9
Pixel density 508 ppi 460 ppi
Refresh rate 144 Hz 120 Hz
Adaptive refresh rate Yes (1-120 Hz) Yes (30-120 Hz)
Max brightness 2600 nits 2000 nits
HDR support Yes, HDR10+ Yes, Dolby Vision
Touch Sampling Rate n/a 480 Hz
Screen-to-body ratio 90.1 % 90 %
Features - DCI-P3
- Always-On Display
- DC dimming		 - DCI-P3
- Always-On Display
- DC dimming

Design & Build

Design and ergonomics comparison
Height 163.7 mm (6.44 in) 157.53 mm (6.2 in)
Width 76.8 mm (3.02 in) 75.19 mm (2.96 in)
Thickness 8.7 mm (0.34 in) 8.38 mm (0.33 in)
Weight 227 g (8.01 oz) 201.5 g (7.11 oz)
Water resistance IP69 IP68
Cooling system Active fan Vapor chamber
Back panel Glass n/a
Frame Metal Metal
Colors - Black
- Silver		 - White
- Black
- Green
Fingerprint sensor Yes, In-Display Yes, In-Display
Screen-to-body ratio
Vivo iQOO 15 Ultra
90.1 %
Xiaomi Poco X8 Pro
90 %

Performance

Testing Vivo iQOO 15 Ultra and Xiaomi Poco X8 Pro In benchmarks
Processor
Chipset Qualcomm Snapdragon 8 Elite Gen 5 MediaTek Dimensity 8500 Ultra
Max Frequency 4600 MHz 3400 MHz
CPU Cores 8 (2 + 6) 8 (1 + 3 + 4)
Architecture - 6/3.63 (Oryon Gen 3 Performance)
- 2/4.61 (Oryon Gen 3 Prime)		 - 4/2.2 (Cortex-A725)
- 3/3.2 (Cortex-A725)
- 1/3.4 (Cortex-A725)
Process TSMC TSMC
Transistor Size 3 nm 4 nm
Neural Processor Hexagon MediaTek NPU 880
Graphics Adreno 840 Mali-G720 MP8
GPU Cores 1536 1024
GPU Frequency 1200 MHz 1300 MHz
FLOPS 3686.4 GFLOPS 2662.4 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Vivo iQOO 15 Ultra
3615
Xiaomi Poco X8 Pro
1751
Geekbench 6 (Multi-Core)
Vivo iQOO 15 Ultra
11366
Xiaomi Poco X8 Pro
6824
Geekbench 6 (Single-Core)36151751
Geekbench 6 (Multi-Core)113666824
Geekbench Compute (GPU)n/a14716
Sources: Geekbench v6 [Vivo iQOO 15 Ultra], [Xiaomi Poco X8 Pro]
AnTuTu 10
AnTuTu 10
Vivo iQOO 15 Ultra
4518403
Xiaomi Poco X8 Pro
2082689
CPU1322001590034
GPU1594848664221
Memory593523362146
UX1008031466288
NanoReview Score45184032082689

Memory

RAM
RAM Size 16 GB 8 GB
Memory Type LPDDR5X LPDDR5X
Channels 4 4
Storage
Storage Capacity256 GB256 GB
Storage TypeUFS 4.1UFS 4.1
Memory CardNoNo

Software

OS Android 16 Android 16
UI Skin OriginOS 6 HyperOS 3.0

Battery

Volume 7400 mAh 6500 mAh
Max Charging Power 100 W 100 W
Battery Type Silicon Carbon (Si/C) Silicon Carbon (Si/C)
Removable No No
Wireless Charging Yes (40 W) No
Reverse Charging Yes, (Wireless) Yes
Fast Charging Yes Yes (68% in 30 min)
Full Charge Time n/a 0:48 h

Main camera

Matrix 50 MP 50 MP
Photo resolution 8192x6144 pixels 8192x6144 pixels
Zoom Optical, 3x Digital
Flash Dual LED Dual LED
Stabilization Optical Optical
8K Recording Yes (Up to 30 fps) No
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 240 fps (1080p) 960 fps (1080p)
Wide-angle lens 107 ° n/a
Lenses count Standard: 50 MP
Telephoto: 50 MP
Ultra-wide: 50 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/1.9f/1.5
Focal length23 mm26 mm
SensorSony IMX921Sony IMX882
Sensor size1/1.56 (0.64)1/1.95 (0.51)
Pixel size1 μm0.8 μm
AutofocusPhase autofocusPhase autofocus
StabilizationOpticalOptical
Telephoto
Matrix50 MPn/a
Aperturef/2.7n/a
SensorSony IMX882n/a
Sensor size1/1.95 (0.51)n/a
Pixel size0.8 μmn/a
StabilizationOpticaln/a
Ultra-wide lens
Matrix50 MP8 MP
Aperturef/2.1f/2.2
Focal length15 mm15 mm
Sensorn/aSmartSens SC821CS
Sensor size1/2.76 (0.36)1/4.0 (0.25)
Pixel size0.64 μm1.12 μm
StabilizationDigitalDigital

Front camera

Matrix 32 MP 20 MP
Photo resolution n/a 5184x3888 pixels
Aperture f/2.2 f/2.2
Focal length 21 mm 25 mm
Sensor CMOS OmniVision OV20B
Sensor size 1/3.1 (0.32) 1/4.0 (0.25)
Pixel size 0.7 μm 0.7 μm
Autofocus No No
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 6 (802.11 a/b/g/n/ac/ax)
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 6.0
Bluetooth features LE LE
USB type USB Type-C USB Type-C
USB version 3.2 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort Yes No
GPS - GPS
- GLONASS
- Beidou
- Galileo
- QZSS		 - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
- NAVIC
NFC* Yes Varies by region
Infrared Port Yes Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *YesNo
Hybrid SlotNoNo
2G Bandsn/aGSM 2/3/5/8
3G Bandsn/aWCDMA 1/2/4/5/6/8/19
LTE Bands*n/aLTE (B1/B2/B3/B4/B5/B7/B8/B18/B19/B20/B26/B28/B38/B40/B41/B42/B66/B71/B484)
5G SupportYesYes

Sound

3.5 mm Jack No No
FM Radio No No
Dolby Atmos Yes Yes

Other

Class Flagship Mid-range
Announced February, 2026 yr March, 2026 yr
Release Date February, 2026 yr March, 2026 yr
MSRP ($) 820 329
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

After analyzing the data, we consider Vivo iQOO 15 Ultra the clear winner in this comparison.

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