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 — 68/100 vs 49/100 (a 19-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 (3,088,357 vs 1,627,862); the Redmi K90 is noticeably lighter (206g vs 225g).
Redmi K90
Xiaomi 12S Ultra
- Higher AnTuTu: 3088357 vs 1627862
- Better Geekbench Single: 3050 vs 1761
- Better Geekbench Multi: 9300 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 (69/100 vs 24/100)
- Longer battery life (71/100 vs 43/100)
- Better design/ergonomics (42/100 vs 18/100)
- Better value for money (82/100 vs 55/100)
- Better camera (70/100 vs 53/100)
Comparing the Redmi K90 vs the Xiaomi 12S Ultra, the Redmi K90 scores 19 points higher (68/100 vs 49/100). In the "performance" category, the Redmi K90 leads (69/100 vs 24/100). In the "camera" category, the Xiaomi 12S Ultra leads (70/100 vs 53/100). In the "battery" category, the Redmi K90 leads (71/100 vs 43/100). In the "value for money" category, the Redmi K90 leads (82/100 vs 55/100). In the "performance" category, the Redmi K90 significantly outperforms the Xiaomi 12S Ultra (69/100 vs 24/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Xiaomi 12S Ultra notably outperforms the Redmi K90 (70/100 vs 53/100). In the "battery" category, the Redmi K90 notably outperforms the Xiaomi 12S Ultra (71/100 vs 43/100). In the "design" category, the Redmi K90 notably outperforms the Xiaomi 12S Ultra (42/100 vs 18/100). In the "value for money" category, the Redmi K90 notably outperforms the Xiaomi 12S Ultra (82/100 vs 55/100).
| Specification | Redmi K90 | Xiaomi 12S Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8+ Gen 1 | |
| AnTuTu | 3088357 | 1627862 | |
| Geekbench Single | 3050 | 1761 | |
| Geekbench Multi | 9300 | 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 | |
| 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 | |
| Price | $401 | — |
Redmi K90
- Main: 50MP f/f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Xiaomi 12S Ultra
- Main: 3MP f/f/1.9
- Ultrawide: 48MP
- Telephoto: 48MP
- Front: 32MP
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Xiaomi 12S Ultra
- 6.7" LTPO2 AMOLED
- Resolution: 1440x3200
- Refresh rate: 120 Hz
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
Xiaomi 12S Ultra
- 4800 mAh
- Wired: 67W
- No wireless charging
We compared Redmi K90 and Xiaomi 12S Ultra, covering their specs and all relevant benchmarks.
Redmi K90 leads Xiaomi 12S Ultra by 89.7% in our overall performance rating.
Xiaomi 12S Ultra
Price unknownperformance
In the "performance" category, the Redmi K90 significantly outperforms the Xiaomi 12S Ultra (69/100 vs 24/100).
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, the Xiaomi 12S Ultra notably outperforms the Redmi K90 (70/100 vs 53/100).
battery
In the "battery" category, the Redmi K90 notably outperforms the Xiaomi 12S Ultra (71/100 vs 43/100).
design
In the "design" category, the Redmi K90 notably outperforms the Xiaomi 12S Ultra (42/100 vs 18/100).
value for money
In the "value for money" category, the Redmi K90 notably outperforms the Xiaomi 12S Ultra (82/100 vs 55/100).
Which is better: the Redmi K90 or the Xiaomi 12S Ultra?
The Redmi K90 is noticeably better than the Xiaomi 12S Ultra — the overall rating gap is 19 points.
What is the rating of the Redmi K90 and the Xiaomi 12S Ultra?
The Redmi K90 has a MobileRank rating of 68/100, the Xiaomi 12S Ultra — 49/100.
Which has the better camera: the Redmi K90 or the Xiaomi 12S Ultra?
The Xiaomi 12S Ultra leads on camera score (70/100 vs 53/100).
Which is more powerful: the Redmi K90 or the Xiaomi 12S Ultra?
The Redmi K90 leads on performance (69/100 vs 24/100).
Should you choose the Redmi K90 over the Xiaomi 12S Ultra?
The Redmi K90 is a better fit for active users, budget-conscious buyers. The Xiaomi 12S Ultra is a better fit for everyday use.