Redmi K90 vs Xiaomi 12S Ultra
The Redmi K90 (2025) 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 leads — 76/100 vs 71/100 (a 5-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 4800); the main camera is 50 MP vs 3 MP; the Redmi K90 is faster in AnTuTu (3,077,585 vs 1,627,862); the Redmi K90 is noticeably lighter (206g vs 225g).
Profile comparison
Category scores
Redmi K90
Xiaomi 12S Ultra
What makes Redmi K90 better?
- Higher AnTuTu: 3077585 vs 1627862
- Better Geekbench Single: 3013 vs 1761
- Better Geekbench Multi: 9287 vs 4688
- Bigger battery: 7100 vs 4800 mAh
- Faster charging: 100W vs 67W
- Better main camera: 50MP vs 3MP
- Lighter: 206g vs 225g
- Higher performance (91/100 vs 73/100)
- Longer battery life (72/100 vs 64/100)
- Better portability (55/100 vs 32/100)
What makes Xiaomi 12S Ultra better?
- Better camera (70/100 vs 58/100)
- Better display (90/100 vs 82/100)
Comparison verdict
Comparing the Redmi K90 vs the Xiaomi 12S Ultra, the Redmi K90 scores 5 points higher (76/100 vs 71/100). In the "performance" category, the Redmi K90 leads (91/100 vs 73/100). In the "camera" category, the Xiaomi 12S Ultra leads (70/100 vs 58/100). In the "performance" category, the Redmi K90 notably outperforms the Xiaomi 12S Ultra (91/100 vs 73/100). In the "display" category, the Xiaomi 12S Ultra is a bit better (90/100 vs 82/100). In the "camera" category, the Xiaomi 12S Ultra is a bit better (70/100 vs 58/100). In the "battery" category, the Redmi K90 is a bit better (72/100 vs 64/100). In the "portability" category, the Redmi K90 notably outperforms the Xiaomi 12S Ultra (55/100 vs 32/100).
Specs comparison
| Specification | Redmi K90 | Xiaomi 12S Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8+ Gen 1 | |
| AnTuTu | 3077585 | 1627862 | |
| Geekbench Single | 3013 | 1761 | |
| Geekbench Multi | 9287 | 4688 | |
| Display | 6.6" AMOLED | 6.7" LTPO2 AMOLED | |
| Resolution | 2510x1156 | 1440x3200 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 7100 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 | 50 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 | IP68 | |
| Dimensions | 157.5×75.3×8.0 mm | 163.2×75.0×9.1 mm | |
| Weight | 206 g | 225 g | |
| Launch price | $401 | — |
Camera comparison
Redmi K90
- Main: 50MP f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Xiaomi 12S Ultra
- Main: 3MP f/1.9
- Ultrawide: 48MP
- Telephoto: 48MP
- Front: 32MP
Display comparison
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Xiaomi 12S Ultra
- 6.7" LTPO2 AMOLED
- Resolution: 1440x3200
- Refresh rate: 120 Hz
Battery and charging
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
Xiaomi 12S Ultra
- 4800 mAh
- Wired: 67W
- Wireless: 50W
Overall performance score
We compared Redmi K90 and Xiaomi 12S Ultra, covering their specs and all relevant benchmarks.
Redmi K90 leads Xiaomi 12S Ultra by 89.1% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Xiaomi 12S Ultra
Price unknownDetailed category analysis
performance
In the "performance" category, the Redmi K90 notably outperforms the Xiaomi 12S Ultra (91/100 vs 73/100).
display
In the "display" category, the Xiaomi 12S Ultra is a bit better (90/100 vs 82/100).
camera
In the "camera" category, the Xiaomi 12S Ultra is a bit better (70/100 vs 58/100).
battery
In the "battery" category, the Redmi K90 is a bit better (72/100 vs 64/100).
portability
In the "portability" category, the Redmi K90 notably outperforms the Xiaomi 12S Ultra (55/100 vs 32/100).
Frequently asked questions
Which is better: the Redmi K90 or the Xiaomi 12S Ultra?
The Redmi K90 edges out the Xiaomi 12S Ultra by just 5 points — the two devices are very close in overall level.
What is the rating of the Redmi K90 and the Xiaomi 12S Ultra?
The Redmi K90 has a MobileRank rating of 76/100, the Xiaomi 12S Ultra — 71/100.
Which has the better camera: the Redmi K90 or the Xiaomi 12S Ultra?
The Xiaomi 12S Ultra leads on camera score (70/100 vs 58/100).
Which is more powerful: the Redmi K90 or the Xiaomi 12S Ultra?
The Redmi K90 leads on performance (91/100 vs 73/100).
Should you choose the Redmi K90 over the Xiaomi 12S Ultra?
The Redmi K90 is a better fit for gamers and power users, budget-conscious buyers. The Xiaomi 12S Ultra is a better fit for active users.