Xiaomi 15 Ultra vs Xiaomi Redmi K90 Ultra
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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 Redmi K90 Ultra, Manufactured in June, 2026with chipsetQualcomm Snapdragon 8 Elite. Below are specs, tests, pros and cons for each device
Key Differences
Reasons to choose Xiaomi 15 Ultra
- Higher pixel density: 522ppi
- Lighter design: 226g vs 227g
- Newer Bluetooth version: 6.0 vs 5.4
- Supports newer USB: 3.2 vs 2
- Supports DisplayPort
- Built-in eSIM
Reasons to choose Xiaomi Redmi K90 Ultra
- Larger display: 6.83in
- Higher refresh rate: 165Hz
- Higher battery capacity: 8550mAh vs 5410mAh
Versions
| Memory Options | - 12/256 GB - 16/512 GB - 16/1024 GB |
- 12/256 GB - 12/512 GB - 16/256 GB - 16/512 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 | 6.83 in |
| Resolution | 1440x3200 pixels | 1280x2772 pixels |
| Aspect ratio | 20:9 | 19.5:9 |
| Pixel density | 522 ppi | 447 ppi |
| Refresh rate | 120 Hz | 165 Hz |
| Adaptive refresh rate | Yes (1-120 Hz) | Yes |
| HDR support | Yes Dolby Vision | Yes, Dolby Vision |
| Touch Sampling Rate | 300 Hz | 480 Hz |
| Screen-to-body ratio | 90 % | 90.2 % |
| 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) | 162.91 mm (6.41 in) |
| Width | 75.3 mm (2.96 in) | 77.93 mm (3.07 in) |
| Thickness | 9.35 mm (0.37 in) | 8.18 mm (0.32 in) |
| Weight | 226 g (7.97 oz) | 227 g (8.01 oz) |
| Water resistance | IP68 | IP69 |
| Cooling system | Vapor chamber | Active fan |
| Back panel | Glass | n/a |
| Frame | Metal | Metal |
| Colors | - White - Black - Silver - Green |
- Black - Silver - Blue |
| Fingerprint sensor | Yes In-Display | Yes, In-Display |
Screen-to-body ratio
Performance
| Chipset | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite |
| Max Frequency | 4320 MHz | 4320 MHz |
| CPU Cores | 8 (2 + 6) | 8 (2 + 6) |
| Architecture | - 6/3.53 (Oryon (Phoenix M)) - 2/4.32 (Oryon (Phoenix L)) |
- 6/3.53 (Oryon (Phoenix M)) - 2/4.32 (Oryon (Phoenix L)) |
| Process | TSMC | TSMC |
| Transistor Size | 3 nm | 3 nm |
| Neural Processor | Hexagon | Hexagon |
| Graphics | Adreno 830 | n/a |
| GPU Cores | 1536 | n/a |
| GPU Frequency | 1100 MHz | n/a |
| FLOPS | 3379.2 GFLOPS | n/a |
| Geekbench 6 (Single-Core) | 3008 | 3261 |
| Geekbench 6 (Multi-Core) | 9065 | 10224 |
| CPU | 558586 | 924949 |
| GPU | 1040161 | 1161971 |
| Memory | 520300 | 466704 |
| UX | 425326 | 680071 |
| NanoReview Score | 2544373 | 3233695 |
Memory
| RAM Size | 12 GB | 12 GB |
| Memory Type | LPDDR5X | LPDDR5X |
| Memory Frequency | 5333 MHz | 5300 MHz |
| 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 |
Battery
| Volume | 5410 mAh | 8550 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 |
| Full Charge Time | 0:51 h | n/a |
| 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) | 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 | 1920 fps (1080p) | 1920 fps (710p) |
| 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/1.7 |
| Focal length | 23 mm | 24 mm |
| Sensor | Sony LYT-900 | n/a |
| Sensor size | 1/1.0 | 1/1.55 (0.65) |
| Pixel size | 1.6 μm | 1 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 | n/a |
| Sensor size | 1/2.76 | 1/4.0 (0.25) |
| Pixel size | 0.64 μm | 1.14 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 | n/a |
| Sensor | Omnivision OV32B | n/a |
| Sensor size | 1/3.14 | n/a |
| Pixel size | 0.7 μm | n/a |
| 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 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 | 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 | Yes |
| 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 B3/B5/B8 |
| 3G Bands | WCDMA 1/2/4/5/6/8/19 | WCDMA B1/B4/B5/B6/B8/B19 |
| 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/B3/B4/B5/B7/B8/B19/B28/B34/B38/B39/B40/B41/B42/B48/B66) |
| 5G Support | Yes | Yes |
Sound
| Speakers | n/a | 2.1 |
| 3.5 mm Jack | No | No |
| FM Radio | No | No |
| Dolby Atmos | Yes | Yes |
Other
| Class | Flagship | Flagship |
| Announced | February, 2025 yr | June, 2026 yr |
| Release Date | February, 2025 yr | June, 2026 yr |
| MSRP ($) | 1099 | 440 |
| 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
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Survey
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