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 354,158); the Redmi 13x is noticeably lighter (205g vs 227g).
Profile comparison
Category scores
Redmi 13x
Redmi K90 Ultra
What makes Redmi 13x better?
- Better main camera: 108MP vs 50MP
- Lighter: 205g vs 227g
- Better camera (40/100 vs 37/100)
- Better portability (53/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 354158
- Better Geekbench Single: 3013 vs 405
- Better Geekbench Multi: 9287 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)
Comparison verdict
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).
Specs comparison
| Specification | Redmi 13x | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | MediaTek Helio G91 Ultra | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 354158 | 3233695 | |
| Geekbench Single | 405 | 3013 | |
| Geekbench Multi | 1407 | 9287 | |
| 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 |
Camera comparison
Redmi 13x
- Main: 108MP f/1.8
- Front: 13MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
Redmi 13x
- 6.8" IPS LCD
- Resolution: 1080x2460
- Refresh rate: 90 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
Redmi 13x
- 5030 mAh
- Wired: 33W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Redmi 13x and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Redmi 13x by 89.0% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Redmi 13x
Price unknownDetailed category analysis
performance
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).
Frequently asked questions
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 K90 Ultra is a better fit for gamers and power users, those who care about battery life.