Redmi K90 Ultra vs Xiaomi 12S Ultra
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Xiaomi 12S Ultra (2022) runs on the Qualcomm Snapdragon 8+ Gen 1. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 71/100 (a 2-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 4800); the main camera is 50 MP vs 3 MP; the Redmi K90 Ultra is faster in AnTuTu (3,119,308 vs 1,627,862).
Redmi K90 Ultra
Xiaomi 12S Ultra
- Higher AnTuTu: 3119308 vs 1627862
- Better Geekbench Single: 3041 vs 1761
- Better Geekbench Multi: 9494 vs 4688
- Bigger battery: 8550 vs 4800 mAh
- Faster charging: 100W vs 67W
- Better main camera: 50MP vs 3MP
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (92/100 vs 73/100)
- Longer battery life (78/100 vs 64/100)
- Better display (94/100 vs 90/100)
- Better portability (40/100 vs 32/100)
- Lighter: 225g vs 227g
- Better camera (70/100 vs 37/100)
Comparing the Redmi K90 Ultra vs the Xiaomi 12S Ultra, the Redmi K90 Ultra scores 2 points higher (73/100 vs 71/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 73/100). In the "camera" category, the Xiaomi 12S Ultra leads (70/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 64/100). In the "performance" category, the Redmi K90 Ultra notably outperforms the Xiaomi 12S Ultra (92/100 vs 73/100). In the "display" category, the Redmi K90 Ultra and the Xiaomi 12S Ultra are nearly equal (94/100 vs 90/100). In the "camera" category, the Xiaomi 12S Ultra significantly outperforms the Redmi K90 Ultra (70/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra is a bit better (78/100 vs 64/100). In the "portability" category, the Redmi K90 Ultra is a bit better (40/100 vs 32/100).
| Specification | Redmi K90 Ultra | Xiaomi 12S Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8+ Gen 1 | |
| AnTuTu | 3119308 | 1627862 | |
| Geekbench Single | 3041 | 1761 | |
| Geekbench Multi | 9494 | 4688 | |
| Display | 6.8" AMOLED | 6.7" LTPO2 AMOLED | |
| Resolution | 1280x2772 | 1440x3200 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8550 mAh | 4800 mAh | |
| Charging | 100W | 67W | |
| Wireless charging | 0W | 50W | |
| DXOMark (camera) | — | 136 | |
| Main camera | 50 MP | 3 MP | |
| Ultrawide | 8 MP | 48 MP | |
| Telephoto | 0 MP | 48 MP | |
| Front camera | 20 MP | 32 MP | |
| RAM | 12GB / 16GB | 8GB / 12GB | |
| Storage | 256GB / 512GB | 256GB / 512GB | |
| OS | Android 16 | Android 12, MIUI 13 | |
| Brightness (peak) | 3500 nits | 1500 nits | |
| NFC | yes | yes | |
| Protection | IP68/IP69 | IP68 | |
| Dimensions | 162.9×77.9×8.2 mm | 163.2×75.0×9.1 mm | |
| Weight | 227 g | 225 g | |
| Launch price | $420 | — |
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Xiaomi 12S Ultra
- Main: 3MP f/f/1.9
- Ultrawide: 48MP
- Telephoto: 48MP
- Front: 32MP
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Xiaomi 12S Ultra
- 6.7" LTPO2 AMOLED
- Resolution: 1440x3200
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Xiaomi 12S Ultra
- 4800 mAh
- Wired: 67W
- Wireless: 50W
We compared Redmi K90 Ultra and Xiaomi 12S Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Xiaomi 12S Ultra by 91.6% in our overall performance rating.
Xiaomi 12S Ultra
Price unknownperformance
In the "performance" category, the Redmi K90 Ultra notably outperforms the Xiaomi 12S Ultra (92/100 vs 73/100).
display
In the "display" category, the Redmi K90 Ultra and the Xiaomi 12S Ultra are nearly equal (94/100 vs 90/100).
camera
In the "camera" category, the Xiaomi 12S Ultra significantly outperforms the Redmi K90 Ultra (70/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra is a bit better (78/100 vs 64/100).
portability
In the "portability" category, the Redmi K90 Ultra is a bit better (40/100 vs 32/100).
Which is better: the Redmi K90 Ultra or the Xiaomi 12S Ultra?
The Redmi K90 Ultra edges out the Xiaomi 12S Ultra by just 2 points — the two devices are very close in overall level.
What is the rating of the Redmi K90 Ultra and the Xiaomi 12S Ultra?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Xiaomi 12S Ultra — 71/100.
Which has the better camera: the Redmi K90 Ultra or the Xiaomi 12S Ultra?
The Xiaomi 12S Ultra leads on camera score (70/100 vs 37/100).
Which is more powerful: the Redmi K90 Ultra or the Xiaomi 12S Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 73/100).
Should you choose the Redmi K90 Ultra over the Xiaomi 12S Ultra?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Xiaomi 12S Ultra is a better fit for active users.