Redmi K90 Ultra vs Vivo iQOO U5x
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Vivo iQOO U5x (2022) runs on the Qualcomm Snapdragon 680 4G. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 34/100 (a 39-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5000); the main camera is 50 MP vs 13 MP; the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 424,216); the Redmi K90 Ultra has NFC for contactless payments, the Vivo iQOO U5x doesn't; the Vivo iQOO U5x is noticeably lighter (179g vs 227g).
Profile comparison
Category scores
Redmi K90 Ultra
Vivo iQOO U5x
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 424216
- Better Geekbench Single: 3013 vs 412
- Better Geekbench Multi: 9287 vs 1423
- Bigger battery: 8550 vs 5000 mAh
- Better main camera: 50MP vs 13MP
- Higher performance (92/100 vs 31/100)
- Better camera (37/100 vs 10/100)
- Longer battery life (78/100 vs 66/100)
- Better display (94/100 vs 39/100)
What makes Vivo iQOO U5x better?
- Lighter: 179g vs 227g
- Better portability (68/100 vs 40/100)
Comparison verdict
Comparing the Redmi K90 Ultra vs the Vivo iQOO U5x, the Redmi K90 Ultra scores 39 points higher (73/100 vs 34/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 31/100). In the "camera" category, the Redmi K90 Ultra leads (37/100 vs 10/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 66/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Vivo iQOO U5x (92/100 vs 31/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Vivo iQOO U5x (94/100 vs 39/100). In the "camera" category, the Redmi K90 Ultra notably outperforms the Vivo iQOO U5x (37/100 vs 10/100). In the "battery" category, the Redmi K90 Ultra is a bit better (78/100 vs 66/100). In the "portability" category, the Vivo iQOO U5x notably outperforms the Redmi K90 Ultra (68/100 vs 40/100).
Specs comparison
| Specification | Redmi K90 Ultra | Vivo iQOO U5x | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 680 4G | |
| AnTuTu | 3233695 | 424216 | |
| Geekbench Single | 3013 | 412 | |
| Geekbench Multi | 9287 | 1423 | |
| Display | 6.8" AMOLED | 6.5" IPS LCD | |
| Resolution | 1280x2772 | 720x1600 | |
| Refresh rate | 165 Hz | — | |
| Battery | 8550 mAh | 5000 mAh | |
| Charging | 100W | — | |
| Main camera | 50 MP | 13 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 20 MP | 8 MP | |
| RAM | 12GB / 16GB | 4GB / 8GB | |
| Storage | 256GB / 512GB | 128GB | |
| OS | Android 16 | Android 11, Origin OS Ocean | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | no | |
| Protection | IP68/IP69 | — | |
| Dimensions | 162.9×77.9×8.2 mm | 164.0×75.2×8.3 mm | |
| Weight | 227 g | 179 g | |
| Launch price | $420 | — |
Camera comparison
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Vivo iQOO U5x
- Main: 13MP f/2.2
- Front: 8MP
Display comparison
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Vivo iQOO U5x
- 6.5" IPS LCD
- Resolution: 720x1600
- Refresh rate: —
Battery and charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Vivo iQOO U5x
- 5000 mAh
- Wireless charging: no data
Overall performance score
We compared Redmi K90 Ultra and Vivo iQOO U5x, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Vivo iQOO U5x by 662.3% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Vivo iQOO U5x
Price unknownDetailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Vivo iQOO U5x (92/100 vs 31/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Vivo iQOO U5x (94/100 vs 39/100).
camera
In the "camera" category, the Redmi K90 Ultra notably outperforms the Vivo iQOO U5x (37/100 vs 10/100).
battery
In the "battery" category, the Redmi K90 Ultra is a bit better (78/100 vs 66/100).
portability
In the "portability" category, the Vivo iQOO U5x notably outperforms the Redmi K90 Ultra (68/100 vs 40/100).
Frequently asked questions
Which is better: the Redmi K90 Ultra or the Vivo iQOO U5x?
The Redmi K90 Ultra significantly outperforms the Vivo iQOO U5x by 39 points (73/100 vs 34/100).
What is the rating of the Redmi K90 Ultra and the Vivo iQOO U5x?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Vivo iQOO U5x — 34/100.
Which has the better camera: the Redmi K90 Ultra or the Vivo iQOO U5x?
The Redmi K90 Ultra leads on camera score (37/100 vs 10/100).
Which is more powerful: the Redmi K90 Ultra or the Vivo iQOO U5x?
The Redmi K90 Ultra leads on performance (92/100 vs 31/100).
Should you choose the Redmi K90 Ultra over the Vivo iQOO U5x?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.