Redmi K90 Ultra vs Vivo iQOO U1
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Vivo iQOO U1 (2020) runs on the Qualcomm Snapdragon 720G. 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 4500); the main camera is 50 MP vs 48 MP; the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 517,460); the Redmi K90 Ultra has NFC for contactless payments, the Vivo iQOO U1 doesn't; the Vivo iQOO U1 is noticeably lighter (190g vs 227g).
Profile comparison
Category scores
Redmi K90 Ultra
Vivo iQOO U1
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 517460
- Better Geekbench Single: 3013 vs 746
- Better Geekbench Multi: 9287 vs 1762
- Bigger battery: 8550 vs 4500 mAh
- Faster charging: 100W vs 18W
- Better main camera: 50MP vs 48MP
- Higher performance (92/100 vs 41/100)
- Better camera (37/100 vs 29/100)
- Longer battery life (78/100 vs 33/100)
- Better display (94/100 vs 57/100)
What makes Vivo iQOO U1 better?
- Lighter: 190g vs 227g
- Better portability (59/100 vs 40/100)
Comparison verdict
Comparing the Redmi K90 Ultra vs the Vivo iQOO U1, 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 41/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 33/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Vivo iQOO U1 (92/100 vs 41/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Vivo iQOO U1 (94/100 vs 57/100). In the "camera" category, the Redmi K90 Ultra is a bit better (37/100 vs 29/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the Vivo iQOO U1 (78/100 vs 33/100). In the "portability" category, the Vivo iQOO U1 notably outperforms the Redmi K90 Ultra (59/100 vs 40/100).
Specs comparison
| Specification | Redmi K90 Ultra | Vivo iQOO U1 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 720G | |
| AnTuTu | 3233695 | 517460 | |
| Geekbench Single | 3013 | 746 | |
| Geekbench Multi | 9287 | 1762 | |
| Display | 6.8" AMOLED | 6.5" IPS LCD | |
| Resolution | 1280x2772 | 1080x2340 | |
| Refresh rate | 165 Hz | — | |
| Battery | 8550 mAh | 4500 mAh | |
| Charging | 100W | 18W | |
| Main camera | 50 MP | 48 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 20 MP | 8 MP | |
| RAM | 12GB / 16GB | 6GB / 8GB | |
| Storage | 256GB / 512GB | 64GB / 128GB | |
| OS | Android 16 | Android 10, iQOO UI 1.0 | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | no | |
| Protection | IP68/IP69 | — | |
| Dimensions | 162.9×77.9×8.2 mm | 162.1×76.6×8.5 mm | |
| Weight | 227 g | 190 g | |
| Launch price | $420 | — |
Camera comparison
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Vivo iQOO U1
- Main: 48MP f/1.8
- Front: 8MP
Display comparison
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Vivo iQOO U1
- 6.5" IPS LCD
- Resolution: 1080x2340
- Refresh rate: —
Battery and charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Vivo iQOO U1
- 4500 mAh
- Wired: 18W
- No wireless charging
Overall performance score
We compared Redmi K90 Ultra and Vivo iQOO U1, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Vivo iQOO U1 by 524.9% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Vivo iQOO U1
Price unknownDetailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Vivo iQOO U1 (92/100 vs 41/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Vivo iQOO U1 (94/100 vs 57/100).
camera
In the "camera" category, the Redmi K90 Ultra is a bit better (37/100 vs 29/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the Vivo iQOO U1 (78/100 vs 33/100).
portability
In the "portability" category, the Vivo iQOO U1 notably outperforms the Redmi K90 Ultra (59/100 vs 40/100).
Frequently asked questions
Which is better: the Redmi K90 Ultra or the Vivo iQOO U1?
The Redmi K90 Ultra significantly outperforms the Vivo iQOO U1 by 34 points (73/100 vs 39/100).
What is the rating of the Redmi K90 Ultra and the Vivo iQOO U1?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Vivo iQOO U1 — 39/100.
Which has the better camera: the Redmi K90 Ultra or the Vivo iQOO U1?
The Redmi K90 Ultra leads on camera score (37/100 vs 29/100).
Which is more powerful: the Redmi K90 Ultra or the Vivo iQOO U1?
The Redmi K90 Ultra leads on performance (92/100 vs 41/100).
Should you choose the Redmi K90 Ultra over the Vivo iQOO U1?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.