REDMI K90 Ultra vs Xiaomi 15 Ultra
64.4Performance79.1
78.7Display69.1
43.4Camera73.2
83.2Battery79
86.7Features78.7
7 spec wins — REDMI K90 Ultra5 spec wins — Xiaomi 15 Ultra
InnoReviews verdict
Xiaomi 15 Ultra wins this phone face-off, 75.9 to 69.1, pulling ahead mainly in camera (+30) and performance (+15). 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 69
- Stronger battery score: 83 vs 79
- Stronger features score: 87 vs 79
- 58% higher capacity: 8,550 mAh vs 5,410 mAh
- 38% higher Refresh rate: 165 Hz vs 120 Hz
Reasons to pick the Xiaomi 15 Ultra
- Stronger performance score: 79 vs 64
- Stronger camera score: 73 vs 43
- 525% higher ultra-wide: 50 MP vs 8 MP
- 60% higher Front camera: 32 MP vs 20 MP
- 17% higher Pixel density: 522 ppi vs 447 ppi
Display
| Spec | REDMI K90 Ultra | Xiaomi 15 Ultra |
|---|---|---|
| Screen size | 6.83 ″+1% | 6.73 ″ |
| Panel type | AMOLED | LTPO AMOLED |
| Resolution | 1280x2772 | 1440x3200 |
| Pixel density | 447 ppi | 522 ppi+17% |
| Refresh rate | 165 Hz+38% | 120 Hz |
| Peak brightness | 3,500 nits+9% | 3,200 nits |
| Screen-to-body | 90.3 % | 90 % |
Performance
| Spec | REDMI K90 Ultra | Xiaomi 15 Ultra |
|---|---|---|
| Chipset | Snapdragon 8 Elite | Snapdragon 8 Elite |
| AnTuTu | — | 2,650,000 |
| Geekbench 6 (single) | — | 3,050Top 12% |
| Geekbench 6 (multi) | — | 9,600Top 11% |
| 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 | Xiaomi 15 Ultra |
|---|---|---|
| Main camera | 50 MP | 50 MP |
| Main aperture | f/1.7 | f/1.63 |
| Ultra-wide | 8 MP | 50 MP+525% |
| Telephoto | — | 200 MP |
| Optical zoom | — | 4.3 x |
| Max video | 8K@30fps | 8K@30fps |
| Front camera | 20 MP | 32 MP+60% |
| OIS | Yes | Yes |
Battery
| Spec | REDMI K90 Ultra | Xiaomi 15 Ultra |
|---|---|---|
| Capacity | 8,550 mAh+58% | 5,410 mAh |
| Wired charging | 100 W+11% | 90 W |
| Wireless charging | — | 80 W |
| Active use endurance | — | 12 h |
Design
| Spec | REDMI K90 Ultra | Xiaomi 15 Ultra |
|---|---|---|
| Weight | 227 g | 226 g |
| Thickness | 8.2 mm+12% | 9.4 mm |
| IP rating | IP68/IP69 | IP68 |
| Frame material | Aluminum | Aluminum |
Connectivity
| Spec | REDMI K90 Ultra | Xiaomi 15 Ultra |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 7 | Wi-Fi 7 |
| Bluetooth | 5.4 | 6.0 |
| NFC | Yes | Yes |
| USB | USB-C | USB-C 3.2 |
| eSIM | No | Yes |
Software
| Spec | REDMI K90 Ultra | Xiaomi 15 Ultra |
|---|---|---|
| OS at launch | Android 16 (HyperOS 3) | Android 15 (HyperOS 2) |
| OS update pledge | — | 4 years |
Audio
| Spec | REDMI K90 Ultra | Xiaomi 15 Ultra |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |