REDMI K90 Ultra vs Vivo X300 Ultra
64.4Performance93.3
78.7Display82.3
43.4Camera84.6
83.2Battery91.5
86.7Features84
4 spec wins — REDMI K90 Ultra7 spec wins — Vivo X300 Ultra
InnoReviews verdict
Vivo X300 Ultra wins this phone face-off, 88.1 to 69.1, pulling ahead mainly in camera (+41) and performance (+29). REDMI K90 Ultra still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the REDMI K90 Ultra
- 30% higher capacity: 8,550 mAh vs 6,600 mAh
- 15% higher Refresh rate: 165 Hz vs 144 Hz
Reasons to pick the Vivo X300 Ultra
- Stronger performance score: 93 vs 64
- Stronger display score: 82 vs 79
- Stronger camera score: 85 vs 43
- Stronger battery score: 92 vs 83
- 525% higher ultra-wide: 50 MP vs 8 MP
Display
| Spec | REDMI K90 Ultra | Vivo X300 Ultra |
|---|---|---|
| Screen size | 6.83 ″ | 6.82 ″ |
| Panel type | AMOLED | LTPO AMOLED |
| Resolution | 1280x2772 | 1440x3168 |
| Pixel density | 447 ppi | 510 ppi+14% |
| Refresh rate | 165 Hz+15% | 144 Hz |
| Peak brightness | 3,500 nits | 4,500 nits+29% |
| Screen-to-body | 90.3 % | 90.3 % |
Performance
| Spec | REDMI K90 Ultra | Vivo X300 Ultra |
|---|---|---|
| Chipset | Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite Gen 5 |
| AnTuTu | — | 4,085,695 |
| Geekbench 6 (single) | — | 3,730Top 3% |
| Geekbench 6 (multi) | — | 11,494Top 3% |
| RAM (max) | 16 GB | 16 GB |
| Storage options | 256/512GB | 256/512GB/1TB |
| Storage type | UFS 4.1 | UFS 4.1 |
Camera
| Spec | REDMI K90 Ultra | Vivo X300 Ultra |
|---|---|---|
| Main camera | 50 MP | 200 MP+300% |
| Main aperture | f/1.7 | f/1.9 |
| Ultra-wide | 8 MP | 50 MP+525% |
| Telephoto | — | 200 MP |
| Optical zoom | — | 3.7 x |
| Max video | 8K@30fps | 8K@30fps |
| Front camera | 20 MP | 50 MP+150% |
| OIS | Yes | Yes |
Battery
| Spec | REDMI K90 Ultra | Vivo X300 Ultra |
|---|---|---|
| Capacity | 8,550 mAh+30% | 6,600 mAh |
| Wired charging | 100 W | 100 W |
| Wireless charging | — | 40 W |
| Active use endurance | — | 16 h |
Design
| Spec | REDMI K90 Ultra | Vivo X300 Ultra |
|---|---|---|
| Weight | 227 g+2% | 232 g |
| Thickness | 8.2 mm | 8.2 mm |
| IP rating | IP68/IP69 | IP68/IP69 |
| Frame material | Aluminum | Aluminum |
Connectivity
| Spec | REDMI K90 Ultra | Vivo X300 Ultra |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 7 | Wi-Fi 7 |
| Bluetooth | 5.4 | 5.4 |
| NFC | Yes | Yes |
| USB | USB-C | USB-C 3.2 |
| eSIM | No | Yes |
Software
| Spec | REDMI K90 Ultra | Vivo X300 Ultra |
|---|---|---|
| OS at launch | Android 16 (HyperOS 3) | Android 16 (OriginOS 6) |
| OS update pledge | — | 5 years |
Audio
| Spec | REDMI K90 Ultra | Vivo X300 Ultra |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |