Xiaomi 15 Ultra vs Xiaomi Poco X8 Pro
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Compared 2 smartphones : Xiaomi 15 Ultra Manufactured in February, 2025, with display 6.73 with chipsetQualcomm Snapdragon 8 Elite, vs Xiaomi Poco X8 Pro, Manufactured in March, 2026 with chipsetMediaTek Dimensity 8500 Ultra. Below are specs, tests, pros and cons for each device
Key Differences
Reasons to choose Xiaomi 15 Ultra
- Larger display: 6.73in
- Higher pixel density: 522ppi
- Supports newer USB: 3.2 vs 2
- Supports DisplayPort
- Built-in eSIM
Reasons to choose Xiaomi Poco X8 Pro
- Lighter design: 201.5g vs 226g
- Higher battery capacity: 6500mAh vs 5410mAh
Versions
| Memory Options | - 12/256 GB - 16/512 GB - 16/1024 GB |
- 8/256 GB - 8/512 GB - 12/512 GB |
Review
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
Adjust each parameter’s importance to find the best match for you.
Tests & specs
Specs & test comparisonDisplay
| Type | AMOLED | AMOLED |
| Size | 6.73 in | 6.59 in |
| Resolution | 1440x3200 pixels | 1268x2756 pixels |
| Aspect ratio | 20:9 | 19.5:9 |
| Pixel density | 522 ppi | 460 ppi |
| Refresh rate | 120 Hz | 120 Hz |
| Adaptive refresh rate | Yes (1-120 Hz) | Yes (30-120 Hz) |
| Max brightness | n/a | 2000 nits |
| HDR support | Yes Dolby Vision | Yes, Dolby Vision |
| Touch Sampling Rate | 300 Hz | 480 Hz |
| Screen-to-body ratio | 90 % | 90 % |
| Features | - DCI-P3 - Always-On Display - DC dimming |
- DCI-P3 - Always-On Display - DC dimming |
| sRGB gamut | 99.7 % | n/a |
| PWM (Flicker) | 120 Hz | n/a |
| Response time | 1 ms | n/a |
| Contrast | ∞ Infinite | n/a |
Design & Build
| Height | 161.3 mm (6.35 in) | 157.53 mm (6.2 in) |
| Width | 75.3 mm (2.96 in) | 75.19 mm (2.96 in) |
| Thickness | 9.35 mm (0.37 in) | 8.38 mm (0.33 in) |
| Weight | 226 g (7.97 oz) | 201.5 g (7.11 oz) |
| Water resistance | IP68 | IP68 |
| Cooling system | Vapor chamber | Vapor chamber |
| Back panel | Glass | n/a |
| Frame | Metal | Metal |
| Colors | - White - Black - Silver - Green |
- White - Black - Green |
| Fingerprint sensor | Yes In-Display | Yes, In-Display |
Screen-to-body ratio
Performance
| Chipset | Qualcomm Snapdragon 8 Elite | MediaTek Dimensity 8500 Ultra |
| Max Frequency | 4320 MHz | 3400 MHz |
| CPU Cores | 8 (2 + 6) | 8 (1 + 3 + 4) |
| Architecture | - 6/3.53 (Oryon (Phoenix M)) - 2/4.32 (Oryon (Phoenix L)) |
- 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 830 | Mali-G720 MP8 |
| GPU Cores | 1536 | 1024 |
| GPU Frequency | 1100 MHz | 1300 MHz |
| FLOPS | 3379.2 GFLOPS | 2662.4 GFLOPS |
| Geekbench 6 (Single-Core) | 3008 | 1751 |
| Geekbench 6 (Multi-Core) | 9065 | 6824 |
| Geekbench Compute (GPU) | n/a | 14716 |
| CPU | 558586 | 590034 |
| GPU | 1040161 | 664221 |
| Memory | 520300 | 362146 |
| UX | 425326 | 466288 |
| NanoReview Score | 2544373 | 2082689 |
Memory
| RAM Size | 12 GB | 8 GB |
| Memory Type | LPDDR5X | LPDDR5X |
| Memory Frequency | 5333 MHz | n/a |
| Channels | 2 | 4 |
| Storage Capacity | 256 GB | 256 GB |
| Storage Type | UFS 4.1 | UFS 4.1 |
| Memory Card | No | No |
Software
| OS | Android 15 | Android 16 |
| OS Size | 23.9 GB | n/a |
| UI Skin | HyperOS 2.0 | HyperOS 3.0 |
Battery
| Volume | 5410 mAh | 6500 mAh |
| Max Charging Power | 90 W | 100 W |
| Battery Type | Silicon Carbon (Si/C) | Silicon Carbon (Si/C) |
| Removable | No | No |
| Wireless Charging | Yes (80 W) | No |
| Reverse Charging | Yes (Wireless) | Yes |
| Fast Charging | Yes (72% in 30 min) | Yes (68% in 30 min) |
| Full Charge Time | 0:51 h | 0:48 h |
| Web Browsing | 12:19 h | n/a |
| Video Playback | 18:43 h | n/a |
| Games | 06:45 h | n/a |
| Standby Mode | 141 h | n/a |
Main camera
| Matrix | 50 MP | 50 MP |
| Photo resolution | 8192x6144 pixels | 8192x6144 pixels |
| Zoom | Optical, 4.3x | Digital |
| Flash | Dual LED | Dual LED |
| Stabilization | Optical | Optical |
| 8K Recording | Yes (Up to 30 fps) | No |
| 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 | 1920 fps (1080p) | 960 fps (1080p) |
| Wide-angle lens | 115 ° | n/a |
| Lenses count | Standard: 50 MP Telephoto: 200 MP Telephoto: 50 MP Ultra-wide: 50 MP Depth |
Standard: 50 MP Ultra-wide: 8 MP |
| Features | - Bokeh effect - Pro mode - RAW support |
- Bokeh effect - Pro mode |
| Matrix | 50 MP | 50 MP |
| Aperture | f/1.63 | f/1.5 |
| Focal length | 23 mm | 26 mm |
| Sensor | Sony LYT-900 | Sony IMX882 |
| Sensor size | 1/1.0 | 1/1.95 (0.51) |
| Pixel size | 1.6 μm | 0.8 μm |
| Autofocus | Laser autofocus | Phase autofocus |
| Stabilization | Optical | Optical |
| Matrix | 200 MP | n/a |
| Aperture | f/2.6 | n/a |
| Focal length | 100 mm | n/a |
| Sensor | Samsung ISOCELL S5KHP9 | n/a |
| Sensor size | 1/1.4 | n/a |
| Pixel size | 0.56 μm | n/a |
| Stabilization | Optical | n/a |
| Matrix | 50 MP | 8 MP |
| Aperture | f/2.2 | f/2.2 |
| Focal length | 14 mm | 15 mm |
| Sensor | Samsung S5KJN5 | SmartSens SC821CS |
| Sensor size | 1/2.76 | 1/4.0 (0.25) |
| Pixel size | 0.64 μm | 1.12 μm |
| Stabilization | Digital | Digital |
| Bokeh | 80 | n/a |
| Preview | 89 | n/a |
Front camera
| Matrix | 32 MP | 20 MP |
| Photo resolution | 6528x4896 pixels | 5184x3888 pixels |
| Aperture | f/2.0 | f/2.2 |
| Focal length | 22 mm | 25 mm |
| Sensor | Omnivision OV32B | OmniVision OV20B |
| Sensor size | 1/3.14 | 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 | 6.0 | 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 - NAVIC |
- GPS - GLONASS - Beidou - Galileo - QZSS - NAVIC |
| NFC* | Yes | Varies by region |
| Infrared Port | Yes | Yes |
| SIM Count* | 2 | 2 |
| SIM Type | Nano | Nano |
| SIM Mode | Dual SIM Standby | Dual SIM Standby |
| eSIM Support * | Yes | No |
| Hybrid Slot | No | No |
| 2G Bands | GSM 2/3/5/8 | GSM 2/3/5/8 |
| 3G Bands | WCDMA 1/2/4/5/6/8/19 | WCDMA 1/2/4/5/6/8/19 |
| LTE Bands* | LTE (B1/B2/B3/B4/B5/B7/B8/B12/B17/B18/B19/B20/B26/B28/B34/B38/B39/B40/B41/B42/B48/B66) | LTE (B1/B2/B3/B4/B5/B7/B8/B18/B19/B20/B26/B28/B38/B40/B41/B42/B66/B71/B484) |
| 5G Support | Yes | Yes |
Sound
| 3.5 mm Jack | No | No |
| FM Radio | No | No |
| Dolby Atmos | Yes | Yes |
Other
| Class | Flagship | Mid-range |
| Announced | February, 2025 yr | March, 2026 yr |
| Release Date | February, 2025 yr | March, 2026 yr |
| MSRP ($) | 1099 | 329 |
| Sensors | - Barometer - Proximity Sensor - Gyroscope - Accelerometer - Ambient Light Sensor - Compass - Fingerprint sensor |
- Proximity Sensor - Gyroscope - Accelerometer - Ambient Light Sensor - Compass - Fingerprint sensor |
| Charger Included | Yes 90 W | Yes, 100 W |
Note
Xiaomi 15 Ultra:
The Chinese version of the Xiaomi 15 Ultra has a 6000 mAh battery, while the international model comes with 5410 mAh, leading to a noticeable difference in battery life.
*
Attention!
Config, frequencies, NFC, and other specs may vary by region.
Results
After analyzing the data, we consider Xiaomi 15 Ultra the clear winner in this comparison.
Survey
Total Votes: 0
