Xiaomi Redmi K90 Ultra vs Vivo X300 FE
88
out of 100
VS
86
out of 100
Here we compared two flagship smartphones: the 6.83-inch Xiaomi Redmi K90 Ultra (with Qualcomm Snapdragon 8 Elite) that was released on June 30, 2026, against the Vivo X300 FE, which is powered by Qualcomm Snapdragon 8 Gen 5 and came out 3 months before. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.
Select the amount of RAM to evaluate performance and value for money more precisely
Key differences
Reasons to consider the Xiaomi Redmi K90 Ultra
- Has a 0.52 inch larger screen size
- Comes with 2050 mAh larger battery capacity: 8550 vs 6500 mAh
- Higher display refresh rate – 165 Hz
- 13% better performance in AnTuTu Benchmark (3233K versus 2869K)
- Slow-motion recording at 1920FPS
- Supports higher wattage charging (100W versus 90W)
- 16% faster in single-core GeekBench 6 test: 3261 and 2818 points
Reasons to consider the Vivo X300 FE
- The rear camera has a 3x optical zoom
- Handles wireless charging up to 40W
- Newer Bluetooth version (v6.0)
- Weighs 37 grams less
- Better grip in hands – the body is 6.17 mm narrower
- The front-facing camera can record video at 4K
- Ready for eSIM technology
Review
Display
Screen quality, color accuracy, brightness
Camera
Photo and video recording quality
Performance
CPU and memory performance (apps, system)
Gaming
Capabilities for playing modern games
Battery
Battery life, charging type and speed
Connectivity
Networks, ports, data transmission
Scores with a red asterisk (*) are approximate and may change in the future as we gather more data.
Select your primary usage scenario to get a more accurate DeviceFacts Score
Value for money (Beta)
Tests and specifications
Comparison table of technical specifications and testsDisplay
| Type | AMOLED | AMOLED |
| Size | 6.83 inches | 6.31 inches |
| Resolution | 1280 x 2772 pixels | 1260 x 2800 pixels |
| Aspect ratio | 19.5:9 | 19.5:9 |
| PPI | 447 ppi | 461 ppi |
| Refresh rate | 165 Hz | 120 Hz |
| Adaptive refresh rate | Yes | Yes (1-120 Hz) |
| Max rated brightness | - | 1800 nits |
| Max rated brightness in HDR | 9500 nits | 5000 nits |
| HDR support | Yes, Dolby Vision | Yes, HDR10+ |
| Touch sampling rate | 480 Hz | 300 Hz |
| Screen protection | Tempered glass | Tempered glass |
| Screen-to-body ratio | 90.2% | 90.3% |
| Display features | - DCI-P3 - Always-On Display - DC Dimming |
- DCI-P3 - Always-On Display - DC Dimming |
| RGB color space | - | 99.8% |
| PWM | - | 360 Hz |
| Response time | - | 1 ms |
| Contrast | - | ∞ Infinity |
Screen space comparison
Redmi K90 Ultra
6.83″ (19.5:9 ratio) = 17.7 in2
X300 FE
6.31″ (19.5:9 ratio) = 15.1 in2
~17% more screen space
Peak brightness test (auto)
Design and build
| Height | 162.91 mm (6.41 inches) | 150.83 mm (5.94 inches) |
| Width | 77.93 mm (3.07 inches) | 71.76 mm (2.83 inches) |
| Thickness | 8.18 mm (0.32 inches) | 7.99 mm (0.31 inches) |
| Weight | 227 g (8.01 oz) | 190 g (6.7 oz) |
| Waterproof | IP69 | IP69 |
| Advanced cooling | Active fan | Vapor chamber |
| Rear material | - | Glass |
| Frame material | Metal | Metal |
| Colors | Black, Silver, Blue | White, Black, Purple |
| Fingerprint scanner | Yes, in-display | Yes, in-display |
Screen-to-body ratio
Performance
| Chipset | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Gen 5 |
| Max clock | 4320 MHz | 3800 MHz |
| CPU cores | 8 (2 + 6) | 8 (2 + 6) |
| Architecture | - 6 cores at 3.53 GHz: Oryon (Phoenix M) - 2 cores at 4.32 GHz: Oryon (Phoenix L) |
- 6 cores at 3.32 GHz: Oryon Performance - 2 cores at 3.8 GHz: Oryon Prime |
| L3 cache | 8 MB | 6 MB |
| Manufacturing | TSMC | TSMC |
| Lithography process | 3 nanometers | 3 nanometers |
| Neural processor (NPU) | Hexagon | Hexagon |
| Graphics | Adreno 830 | Adreno 829 |
| GPU shading units | 1536 | 1024 |
| GPU clock | 1100 MHz | 1225 MHz |
| FLOPS | ~3379.2 GFLOPS | ~2508.8 GFLOPS |
Benchmarks
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
Compute Score (GPU)
| Compute Score (GPU) | 24370 | 16659 |
| Single-core score | 3261 | 2818 |
| Multi-core score | 10224 | 9052 |
AnTuTu Benchmark 11
| CPU | 924949 | 861821 |
| GPU | 1161971 | 1005345 |
| Memory | 466704 | 381541 |
| UX | 680071 | 620432 |
| Total score | 3233695 | 2869139 |
| Samples | Less than 3 | Less than 3 |
AnTuTu 11 Ranking List (72nd and 130th place)
Recent User Tests
Xiaomi Redmi K90 Ultra
No benchmark results yet
Vivo X300 FE
| Date | Benchmark | Result |
|---|---|---|
| 📘 2026-09-20 (Omar) | AnTuTu 12 | 3231104 |
Memory
| RAM size | 12 GB | 12 GB |
| Memory type | LPDDR5X | LPDDR5X |
| Memory clock | 5300 MHz | - |
| Channels | 4 | 4 |
| Storage size | 256 GB | 256 GB |
| Storage type | UFS 4.1 | UFS 4.1 |
| Memory card | No | No |
Software
| Operating system | Android 16 | Android 16 |
| ROM | HyperOS 3 | OriginOS 6 |
| OS size | - | 27 GB |
| OS updates | 4 years | 5 years |
| Security updates | 6 years | 7 years |
Battery
| Capacity | 8550 mAh | 6500 mAh |
| Max charge power | 100 W | 90 W |
| Battery type | Silicon-Carbon (Si/C) | Silicon-Carbon (Si/C) |
| Replaceable | No | No |
| Wireless charging | No | Yes (40 W) |
| Reverse charging | Yes | Yes |
| Fast charging | Yes | Yes (48% in 30 min) |
| Full charging time | - | 0:58 hr |
Main camera
| Matrix | 50 megapixels | 50 megapixels |
| Image resolution | 8192 x 6144 | 8192 x 6144 |
| Zoom | Digital | Optical, 3x |
| Flash | Dual LED | LED |
| Stabilization | Optical | Optical |
| 8K video recording | Up to 30FPS | No |
| 4K video recording | Up to 60FPS | Up to 60FPS |
| 1080p video recording | Up to 60FPS | Up to 60FPS |
| Slow motion | 1920 FPS (710p) | 960 FPS (1080p) |
| Angle of widest lens | - | 110° |
| Lenses | 1) Standard: 50 MP 2) Ultrawide: 8 MP |
1) Standard: 50 MP 2) Telephoto: 50 MP 3) Ultrawide: 8 MP |
| Camera features | - Bokeh mode - Pro mode |
- Bokeh mode - Pro mode - RAW support |
| Image resolution | 50 MP | 50 MP |
| Aperture | f/1.7 | f/1.6 |
| Focal length | 24 mm | 23 mm |
| Sensor | - | Sony IMX921 |
| Sensor size | 1/1.55" (≈ 0.65 inch) | 1/1.56" (≈ 0.64 inch) |
| Pixel size | 1 micron | 1 micron |
| Autofocus | Phase autofocus | Phase autofocus |
| Stabilization | Optical | Optical |
| Image resolution | - | 50 MP |
| Aperture | - | f/2.6 |
| Focal length | - | 70 mm |
| Sensor | - | Sony IMX882 |
| Sensor size | - | 1/1.95" (≈ 0.51 inch) |
| Pixel size | - | 0.8 micron |
| Stabilization | - | Optical |
| Image resolution | 8 MP | 8 MP |
| Aperture | f/2.2 | f/2.2 |
| Focal length | 15 mm | 15 mm |
| Sensor size | 1/4.0" (≈ 0.25 inch) | 1/4.0" (≈ 0.25 inch) |
| Pixel size | 1.14 micron | 1.12 micron |
| Stabilization | Digital | Digital |
Selfie camera
| Megapixels | 20 megapixels | 50 megapixels |
| Image resolution | 5184 x 3888 | 8192 x 6144 |
| Aperture | f/2.2 | f/2.0 |
| Focal length | - | 21 mm |
| Sensor | - | Samsung S5KJN1 |
| Sensor size | - | 1/2.76" (≈ 0.36 inch) |
| Pixel size | - | 0.64 micron |
| Autofocus | No | Phase autofocus |
| Stabilization | Digital | Digital |
| Video resolution | 1080p (Full HD) at 60 FPS | 2160p (4K) at 60 FPS |
| Depth sensor (TOF 3D) | No | No |
Connectivity
| Wi-Fi standard | 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 | 6.0 |
| 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, NAVIC | GPS, GLONASS, Beidou, Galileo, QZSS |
| NFC* | Yes | Yes |
| Infrared port | Yes | Yes |
| Number of SIM* | 2 | 2 |
| Type of SIM card | Nano | Nano |
| Multi SIM mode | Standby | Standby |
| eSIM support* | No | Yes |
| Hybrid slot | No | No |
| 5G support | Yes | Yes |
Sound
| Speakers | Stereo | Stereo |
| Headphone audio jack | No | No |
| FM radio | No | No |
| Dolby Atmos | Yes | Yes |
Speakers test
Max loudness
Other
| Category | Flagship | Flagship |
| Announced | June 2026 | March 2026 |
| Release date | June 2026 | March 2026 |
| Launch price (MSRP) | $440 | $649 |
| Sensors | - Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint |
- Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint |
| Bundled charger | Yes, 100 W | Yes, 90 W |
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.
Conclusion
If the gaming, battery life, software, design, and sound are more important to you, then choose the Xiaomi Redmi K90 Ultra. But if the camera and connectivity are more of a priority – go for the Vivo X300 FE.
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