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- iQOO 15 Ultra vs X300 Ultra
Vivo iQOO 15 Ultra vs Vivo X300 Ultra
What iQOO 15 Ultra does better (6) and where X300 Ultra wins (8) — every spec side by side.
vs
9.8Display9.6
9.8Performance9.5
9.4Camera9.8
9.7Battery9.3
9.4Features9.7
Dimensions
Size comparison
iQOO 15 UltraX300 Ultra
| iQOO 15 Ultra | X300 Ultra | Difference | |
|---|---|---|---|
| Height | 163.7 mm | 163 mm | +0.7 mm |
| Width | 76.8 mm | 76.8 mm | = |
| Thickness | 8.7 mm | 8.2 mm | +0.5 mm |
| Weight | 227 g | 232 g | −5 g |
Drawn to the same scale from the official dimensions (front and side).
Why is iQOO 15 Ultra better than X300 Ultra?
- AnTuTu score4,602,290 vs 2,723,497+69%
- RAM24 GB vs 16 GB+50%
- Battery capacity7,400 mAh vs 6,600 mAh+12%
- Peak brightness8,000 nits vs 4,500 nits+78%
- Weight227 g vs 232 g+2%
- Rear cameras3 vs 2+50%
Why is X300 Ultra better than iQOO 15 Ultra?
- Main camera50 MP vs 200 MP4×
- Optical zoom3× vs 4.7×+57%
- Measured brightness1,534 nits vs 1,935 nits+26%
- 4K video frame rate60 fps vs 120 fps2×
- eSIMNo · iQOO 15 Ultra: Yes
- Selfie camera32 MP vs 50 MP+56%
- Charged in 30 min62% vs 66%+6%
- Thickness8.7 mm vs 8.2 mm+6%
Specifications
Side by side
| Design | ||
| Weight | 227 g | 232 g |
| Thickness | 8.7 mm | 8.2 mm |
| Height | 163.7 mm | 163 mm |
| Width | 76.8 mm | 76.8 mm |
| Frame | — | Aluminium |
| Back | Glass | Glass |
| Ingress protection | IP68 | IP68 |
| Water resistance (IPx) | IPx8 | IPx8 |
| Glass protection | — | Armor glass |
| Colours | Black, Silver | Eclipse Black, Victory Green, Silver |
| Display | ||
| Screen size | 6.8″ | 6.8″ |
| Panel | AMOLED | LTPO AMOLED |
| OLED panel | Yes | Yes |
| LTPO (adaptive 1–120 Hz) | — | Yes |
| Resolution (width) | 1,440 px | 1,440 px |
| Resolution (height) | 3,168 px | 3,168 px |
| Pixel density | 508 ppi | 510 ppi |
| Refresh rate | 144 Hz | 144 Hz |
| Peak brightness | 8,000 nits | 4,500 nits |
| Measured brightness | 1,534 nits | 1,935 nits |
| Screen-to-body ratio | 90.7% | 90.3% |
| HDR | Yes | Yes |
| Performance | ||
| Chipset | Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 | Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 |
| Chip maker | Qualcomm | Qualcomm |
| Process | 3 nm | 3 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 4.6 GHz | 4.6 GHz |
| GPU | Adreno 840 | Adreno 840 |
| AnTuTu score | 4,602,290 | 2,723,497 |
| Geekbench 6 (multi-core) | 11,366 | 11,494 |
| 3DMark Wild Life Extreme | — | 7,075 |
| Memory | ||
| RAM | 24 GB | 16 GB |
| Storage (max) | 1,024 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 | 200 MP |
| Main camera aperture | f/1.9 | f/1.9 |
| Main sensor size | 1/1.56" | 1/1.12" |
| Rear cameras | 3 | 2 |
| Optical stabilisation | Yes | Yes |
| Ultra-wide camera | Yes | Yes |
| Telephoto camera | Yes | Yes |
| Optical zoom | 3× | 4.7× |
| Max video | 8K | 8K |
| 4K video frame rate | 60 fps | 120 fps |
| Selfie camera | 32 MP | 50 MP |
| 4K selfie video | Yes | Yes |
| Battery | ||
| Battery capacity | 7,400 mAh | 6,600 mAh |
| Battery type | Si/C | Si/C |
| Active use (test) | — | 15.8 h |
| Wired charging | 100 W | 100 W |
| Charged in 30 min | 62% | 66% |
| Wireless charging | Yes | Yes |
| Wireless charging power | 40 W | 40 W |
| Reverse wireless charging | Yes | Yes |
| Connectivity | ||
| 5G | Yes | Yes |
| eSIM | No | Yes |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 7 | Wi-Fi 7 |
| Bluetooth | 5.4 | 5.4 |
| NFC | Yes | Yes |
| USB | USB Type-C 3.2 | USB Type-C 3.2 |
| USB version | 3.2 | 3.2 |
| Video output | Yes | Yes |
| Satellite messaging | — | Yes |
| Infrared port | Yes | Yes |
| Dual-band GPS | Yes | Yes |
| Satellite navigation | GLONASS, GALILEO, BDS, QZSS | GLONASS, GALILEO, BDS, QZSS |
| Features | ||
| Stereo speakers | Yes | Yes |
| 3.5 mm headphone jack | No | No |
| Loudspeaker loudness | — | -24.7 LUFS |
| Fingerprint sensor | Under display, ultrasonic | Under display, ultrasonic |
| Sensors | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass |
| SAR (head) | — | 0.99 W/kg |
| Software | ||
| OS at launch | Android 16 | Android 16 |
| Platform | Android | Android |
| Interface | OriginOS 6 | OriginOS 6 |
| Major OS updates promised | 5 | — |
| EU label | ||
| Energy class | — | B |
| Battery charge cycles | — | 1,200 |
| Endurance per cycle | — | 57 h |
| Repairability class | — | C |
| Drop resistance class | — | B |
