Redmi 13x vs Redmi K90 Ultra
The Redmi 13x (2025) runs on the MediaTek Helio G91 Ultra, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 39/100 (a 34-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5030); the main camera is 108 MP vs 50 MP; the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 361,872); the Redmi 13x is noticeably lighter (205g vs 227g).
Redmi 13x
Redmi K90 Ultra
- Better main camera: 108MP vs 50MP
- Lighter: 205g vs 227g
- Better camera (40/100 vs 37/100)
- Better portability (53/100 vs 40/100)
- Higher AnTuTu: 3233695 vs 361872
- Better Geekbench Single: 3041 vs 405
- Better Geekbench Multi: 9494 vs 1407
- Bigger battery: 8550 vs 5030 mAh
- Faster charging: 100W vs 33W
- Higher refresh rate: 165Hz vs 90Hz
- Higher performance (92/100 vs 29/100)
- Longer battery life (78/100 vs 47/100)
- Better display (94/100 vs 54/100)
Comparing the Redmi 13x vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 34 points higher (73/100 vs 39/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 29/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 47/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Redmi 13x (92/100 vs 29/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Redmi 13x (94/100 vs 54/100). In the "camera" category, the Redmi 13x and the Redmi K90 Ultra are nearly equal (40/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the Redmi 13x (78/100 vs 47/100). In the "portability" category, the Redmi 13x is a bit better (53/100 vs 40/100).
| Specification | Redmi 13x | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | MediaTek Helio G91 Ultra | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 361872 | 3233695 | |
| Geekbench Single | 405 | 3041 | |
| Geekbench Multi | 1407 | 9494 | |
| Display | 6.8" IPS LCD | 6.8" AMOLED | |
| Resolution | 1080x2460 | 1280x2772 | |
| Refresh rate | 90 Hz | 165 Hz | |
| Battery | 5030 mAh | 8550 mAh | |
| Charging | 33W | 100W | |
| Main camera | 108 MP | 50 MP | |
| Ultrawide | 0 MP | 8 MP | |
| Front camera | 13 MP | 20 MP | |
| RAM | 8GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB | |
| OS | Android 14, HyperOS | Android 16 | |
| Brightness (peak) | 550 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP53 | IP68/IP69 | |
| Dimensions | 168.6×76.3×8.3 mm | 162.9×77.9×8.2 mm | |
| Weight | 205 g | 227 g | |
| Launch price | — | $420 |
Redmi 13x
- Main: 108MP f/f/1.8
- Front: 13MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Redmi 13x
- 6.8" IPS LCD
- Resolution: 1080x2460
- Refresh rate: 90 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Redmi 13x
- 5030 mAh
- Wired: 33W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
We compared Redmi 13x and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Redmi 13x by 88.8% in our overall performance rating.
Redmi 13x
Price unknownperformance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Redmi 13x (92/100 vs 29/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Redmi 13x (94/100 vs 54/100).
camera
In the "camera" category, the Redmi 13x and the Redmi K90 Ultra are nearly equal (40/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the Redmi 13x (78/100 vs 47/100).
portability
In the "portability" category, the Redmi 13x is a bit better (53/100 vs 40/100).
Which is better: the Redmi 13x or the Redmi K90 Ultra?
The Redmi K90 Ultra significantly outperforms the Redmi 13x by 34 points (73/100 vs 39/100).
What is the rating of the Redmi 13x and the Redmi K90 Ultra?
The Redmi 13x has a MobileRank rating of 39/100, the Redmi K90 Ultra — 73/100.
Which is more powerful: the Redmi 13x or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 29/100).
Should you choose the Redmi 13x over the Redmi K90 Ultra?
The Redmi 13x is a better fit for everyday use. The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.