Redmi K90 Ultra vs Xiaomi Mi 9T
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Xiaomi Mi 9T (2019) runs on the Qualcomm Snapdragon 730; launch prices were $420 and $300. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 40/100 (a 33-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 4000); the main camera is 50 MP vs 48 MP; the Redmi K90 Ultra is faster in AnTuTu (3,119,308 vs 496,392); the Xiaomi Mi 9T is noticeably lighter (191g vs 227g).
Redmi K90 Ultra
Xiaomi Mi 9T
- Higher AnTuTu: 3119308 vs 496392
- Better Geekbench Single: 3041 vs 724
- Better Geekbench Multi: 9494 vs 1836
- Bigger battery: 8550 vs 4000 mAh
- Faster charging: 100W vs 18W
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 165Hz vs 60Hz
- Higher performance (92/100 vs 41/100)
- Longer battery life (78/100 vs 22/100)
- Better display (94/100 vs 56/100)
- Lighter: 191g vs 227g
- Cheaper at launch: $300 vs $420
- Better camera (41/100 vs 37/100)
- Better portability (56/100 vs 40/100)
Comparing the Redmi K90 Ultra vs the Xiaomi Mi 9T, the Redmi K90 Ultra scores 33 points higher (73/100 vs 40/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 41/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 22/100). Value score: Redmi K90 Ultra — 82/100, Xiaomi Mi 9T — 22/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Redmi K90 Ultra significantly outperforms the Xiaomi Mi 9T (92/100 vs 41/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Xiaomi Mi 9T (94/100 vs 56/100). In the "camera" category, the Xiaomi Mi 9T and the Redmi K90 Ultra are nearly equal (41/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the Xiaomi Mi 9T (78/100 vs 22/100). In the "portability" category, the Xiaomi Mi 9T notably outperforms the Redmi K90 Ultra (56/100 vs 40/100).
| Specification | Redmi K90 Ultra | Xiaomi Mi 9T | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 730 | |
| AnTuTu | 3119308 | 496392 | |
| Geekbench Single | 3041 | 724 | |
| Geekbench Multi | 9494 | 1836 | |
| Display | 6.8" AMOLED | 6.4" AMOLED | |
| Resolution | 1280x2772 | 2340x1080 | |
| Refresh rate | 165 Hz | 60 Hz | |
| Battery | 8550 mAh | 4000 mAh | |
| Charging | 100W | 18W | |
| Main camera | 50 MP | 48 MP | |
| Ultrawide | 8 MP | 13 MP | |
| Telephoto | 0 MP | 8 MP | |
| Front camera | 20 MP | 20 MP | |
| RAM | 12GB / 16GB | 6GB | |
| Storage | 256GB / 512GB | 64GB / 128GB | |
| OS | Android 16 | Android 9 | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | yes | |
| Protection | IP68/IP69 | — | |
| Dimensions | 162.9×77.9×8.2 mm | 156.7×74.3×8.8 mm | |
| Weight | 227 g | 191 g | |
| Launch price | $420 | $300 |
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Xiaomi Mi 9T
- Main: 48MP f/1.75
- Ultrawide: 13MP
- Telephoto: 8MP
- Front: 20MP
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Xiaomi Mi 9T
- 6.4" AMOLED
- Resolution: 2340x1080
- Refresh rate: 60 Hz
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Xiaomi Mi 9T
- 4000 mAh
- Wired: 18W
- No wireless charging
We compared Redmi K90 Ultra and Xiaomi Mi 9T, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Xiaomi Mi 9T by 528.4% in our overall performance rating.
Launch price difference: $120. Xiaomi Mi 9T was $120 cheaper at launch.
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Xiaomi Mi 9T (92/100 vs 41/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Xiaomi Mi 9T (94/100 vs 56/100).
camera
In the "camera" category, the Xiaomi Mi 9T and the Redmi K90 Ultra are nearly equal (41/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the Xiaomi Mi 9T (78/100 vs 22/100).
portability
In the "portability" category, the Xiaomi Mi 9T notably outperforms the Redmi K90 Ultra (56/100 vs 40/100).
Which is better: the Redmi K90 Ultra or the Xiaomi Mi 9T?
The Redmi K90 Ultra significantly outperforms the Xiaomi Mi 9T by 33 points (73/100 vs 40/100).
What is the rating of the Redmi K90 Ultra and the Xiaomi Mi 9T?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Xiaomi Mi 9T — 40/100.
Which is more powerful: the Redmi K90 Ultra or the Xiaomi Mi 9T?
The Redmi K90 Ultra leads on performance (92/100 vs 41/100).
Should you choose the Redmi K90 Ultra over the Xiaomi Mi 9T?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Xiaomi Mi 9T is a better fit for everyday use.