REDMI K90 Ultra vs Vivo X300
64.4Performance85.4
78.7Display73.5
43.4Camera78.1
83.2Battery87.2
86.7Features84
5 spec wins — REDMI K90 Ultra8 spec wins — Vivo X300
InnoReviews verdict
Vivo X300 wins this phone face-off, 81.8 to 69.1, pulling ahead mainly in camera (+35) and performance (+21). 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
- Stronger display score: 79 vs 74
- 42% higher capacity: 8,550 mAh vs 6,040 mAh
- 38% higher Refresh rate: 165 Hz vs 120 Hz
- 11% higher Wired charging: 100 W vs 90 W
Reasons to pick the Vivo X300
- Stronger performance score: 85 vs 64
- Stronger camera score: 78 vs 43
- Stronger battery score: 87 vs 83
- 525% higher ultra-wide: 50 MP vs 8 MP
- 300% higher Main camera: 200 MP vs 50 MP
Display
| Spec | REDMI K90 Ultra | Vivo X300 |
|---|---|---|
| Screen size | 6.83 ″+8% | 6.31 ″ |
| Panel type | AMOLED | LTPO AMOLED |
| Resolution | 1280x2772 | 1216x2640 |
| Pixel density | 447 ppi | 461 ppi+3% |
| Refresh rate | 165 Hz+38% | 120 Hz |
| Peak brightness | 3,500 nits | 4,500 nits+29% |
| Screen-to-body | 90.3 % | 90.1 % |
Performance
| Spec | REDMI K90 Ultra | Vivo X300 |
|---|---|---|
| Chipset | Snapdragon 8 Elite | MediaTek Dimensity 9500 |
| AnTuTu | — | 3,416,530 |
| Geekbench 6 (single) | — | 3,446Top 8% |
| Geekbench 6 (multi) | — | 9,843Top 9% |
| 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 |
|---|---|---|
| Main camera | 50 MP | 200 MP+300% |
| Main aperture | f/1.7 | f/1.68 |
| Ultra-wide | 8 MP | 50 MP+525% |
| Telephoto | — | 50 MP |
| Optical zoom | — | 3 x |
| Max video | 8K@30fps | 4K@120fps |
| Front camera | 20 MP | 50 MP+150% |
| OIS | Yes | Yes |
Battery
| Spec | REDMI K90 Ultra | Vivo X300 |
|---|---|---|
| Capacity | 8,550 mAh+42% | 6,040 mAh |
| Wired charging | 100 W+11% | 90 W |
| Wireless charging | — | 40 W |
| Active use endurance | — | 17.5 h |
Design
| Spec | REDMI K90 Ultra | Vivo X300 |
|---|---|---|
| Weight | 227 g | 190 g+16% |
| Thickness | 8.2 mm | 8 mm+3% |
| IP rating | IP68/IP69 | IP68/IP69 |
| Frame material | Aluminum | Aluminum |
Connectivity
| Spec | REDMI K90 Ultra | Vivo X300 |
|---|---|---|
| 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 |
|---|---|---|
| OS at launch | Android 16 (HyperOS 3) | Android 16 (OriginOS 6) |
| OS update pledge | — | 5 years |
Audio
| Spec | REDMI K90 Ultra | Vivo X300 |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |