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- X300 FE vs 15 Ultra
Vivo X300 FE vs Xiaomi 15 Ultra
What X300 FE does better (9) and where 15 Ultra wins (17) — every spec side by side.
Dimensions
Size comparison
X300 FE15 Ultra
| X300 FE | 15 Ultra | Difference | |
|---|---|---|---|
| Height | 150.8 mm | 161.3 mm | −10.5 mm |
| Width | 71.8 mm | 75.3 mm | −3.5 mm |
| Thickness | 8.2 mm | 9.4 mm | −1.2 mm |
| Weight | 190 g | 226 g | −36 g |
Drawn to the same scale from the official dimensions (front and side).
Why is X300 FE better than 15 Ultra?
- Battery capacity6,500 mAh vs 5,410 mAh+20%
- Peak brightness5,000 nits vs 3,200 nits+56%
- Active use (test)18.8 h vs 16.2 h+16%
- Major OS updates promised5 vs 4+25%
- Weight190 g vs 226 g+19%
- Measured brightness1,774 nits vs 1,588 nits+12%
- Selfie camera50 MP vs 32 MP+56%
- Battery charge cycles1,200 vs 1,000+20%
- Thickness8.2 mm vs 9.4 mm+15%
Why is 15 Ultra better than X300 FE?
- AnTuTu score2,234,101 vs 3,030,376+36%
- Storage (max)512 GB vs 1,024 GB2×
- RAM12 GB vs 16 GB+33%
- Optical zoom3× vs 4.3×+43%
- Geekbench 6 (multi-core)9,356 vs 9,710+4%
- 3DMark Wild Life Extreme4,189 vs 5,626+34%
- Wireless charging power40 W vs 80 W2×
- Energy classB vs A
- CPU frequency3.8 GHz vs 4.32 GHz+14%
- Pixel density461 ppi vs 522 ppi+13%
- Screen size6.3″ vs 6.7″+7%
- USB version2 vs 3.2+60%
Specifications
Side by side
| Design | ||
| Weight | 190 g | 226 g |
| Thickness | 8.2 mm | 9.4 mm |
| Height | 150.8 mm | 161.3 mm |
| Width | 71.8 mm | 75.3 mm |
| Frame | Aluminium | Aluminium |
| Back | Glass | Silicone polymer |
| Ingress protection | IP68 | IP68 |
| Water resistance (IPx) | IPx8 | IPx8 |
| Glass protection | — | Xiaomi Shield Glass 2.0 |
| Colours | Misty Purple (Lilac Purple), Radiant White, Cool Black (Noir Black), Green, Urban Olive | Black, White, Silver Chrome, Green |
| Display | ||
| Screen size | 6.3″ | 6.7″ |
| Panel | LTPO AMOLED | LTPO AMOLED |
| OLED panel | Yes | Yes |
| LTPO (adaptive 1–120 Hz) | Yes | Yes |
| Resolution (width) | 1,216 px | 1,440 px |
| Resolution (height) | 2,640 px | 3,200 px |
| Pixel density | 461 ppi | 522 ppi |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 5,000 nits | 3,200 nits |
| Measured brightness | 1,774 nits | 1,588 nits |
| Screen-to-body ratio | 90.2% | 89.7% |
| HDR | Yes | Yes |
| Performance | ||
| Chipset | Qualcomm SM8845 Snapdragon 8 Gen 5 | Qualcomm SM8750-AB Snapdragon 8 Elite |
| Chip maker | Qualcomm | Qualcomm |
| Process | 3 nm | 3 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 3.8 GHz | 4.32 GHz |
| GPU | Adreno 829 | Adreno 830 |
| AnTuTu score | 2,234,101 | 3,030,376 |
| Geekbench 6 (multi-core) | 9,356 | 9,710 |
| 3DMark Wild Life Extreme | 4,189 | 5,626 |
| Memory | ||
| RAM | 12 GB | 16 GB |
| Storage (max) | 512 GB | 1,024 GB |
| Storage (base) | 256 GB | 256 GB |
| Storage type | UFS 4.1 | UFS 4.1 |
| Memory card slot | No | No |
| Camera | ||
| Main camera | 50 MP | 50 MP |
| Main camera aperture | f/1.6 | f/1.6 |
| Main sensor size | 1/1.56" | 1" |
| Rear cameras | 3 | 4 |
| Optical stabilisation | Yes | Yes |
| Ultra-wide camera | Yes | Yes |
| Telephoto camera | Yes | Yes |
| Optical zoom | 3× | 4.3× |
| Max video | 8K | 8K |
| 4K video frame rate | 120 fps | 120 fps |
| Selfie camera | 50 MP | 32 MP |
| 4K selfie video | Yes | Yes |
| Battery | ||
| Battery capacity | 6,500 mAh | 5,410 mAh |
| Battery type | Si/C | Si/C |
| Active use (test) | 18.8 h | 16.2 h |
| Wired charging | 90 W | 90 W |
| Charged in 30 min | 55% | 72% |
| Wireless charging | Yes | Yes |
| Wireless charging power | 40 W | 80 W |
| Reverse wireless charging | Yes | Yes |
| Connectivity | ||
| 5G | Yes | Yes |
| eSIM | Yes | Yes |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 7 | Wi-Fi 7 |
| Bluetooth | 5.4 | 6 |
| NFC | Yes | Yes |
| USB | USB Type-C 2.0 | USB Type-C 3.2 Gen 2 |
| USB version | 2 | 3.2 |
| Video output | — | Yes |
| Satellite messaging | — | Yes |
| Infrared port | Yes | Yes |
| Dual-band GPS | Yes | Yes |
| Satellite navigation | GLONASS, GALILEO, BDS, QZSS | GLONASS, GALILEO, BDS, QZSS, NavIC |
| Features | ||
| Stereo speakers | Yes | Yes |
| 3.5 mm headphone jack | No | No |
| Loudspeaker loudness | -25.4 LUFS | -24.1 LUFS |
| Fingerprint sensor | Under display, ultrasonic | Under display, ultrasonic |
| Barometer | — | Yes |
| Sensors | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass | Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass, barometer |
| SAR (head) | — | 1 W/kg |
| Software | ||
| OS at launch | Android 16 | Android 15 |
| Platform | Android | Android |
| Interface | OriginOS 6 | HyperOS 3 |
| Major OS updates promised | 5 | 4 |
| EU label | ||
| Energy class | B | A |
| Battery charge cycles | 1,200 | 1,000 |
| Endurance per cycle | 59 h | 59 h |
| Repairability class | C | C |
| Drop resistance class | C | C |
