Redmi K90 Ultra vs Vivo S50
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Vivo S50 (2025) runs on the Qualcomm Snapdragon 8s Gen 3; estimated prices are $420 and $390. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 72/100 (a 1-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 6500); the Redmi K90 Ultra is faster in AnTuTu (3,119,308 vs 1,801,694); the Vivo S50 is noticeably lighter (196g vs 227g).
Redmi K90 Ultra
Vivo S50
- Higher AnTuTu: 3119308 vs 1801694
- Better Geekbench Single: 3041 vs 1930
- Better Geekbench Multi: 9494 vs 4817
- Bigger battery: 8550 vs 6500 mAh
- Faster charging: 100W vs 90W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (92/100 vs 75/100)
- Longer battery life (78/100 vs 68/100)
- Better display (94/100 vs 85/100)
- Lighter: 196g vs 227g
- Cheaper: $390 vs $420
- Better camera (64/100 vs 37/100)
- Better portability (66/100 vs 40/100)
Comparing the Redmi K90 Ultra vs the Vivo S50, the Redmi K90 Ultra scores 1 points higher (73/100 vs 72/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 75/100). In the "camera" category, the Vivo S50 leads (64/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 68/100). In the "performance" category, the Redmi K90 Ultra notably outperforms the Vivo S50 (92/100 vs 75/100). In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 85/100). In the "camera" category, the Vivo S50 notably outperforms the Redmi K90 Ultra (64/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra is a bit better (78/100 vs 68/100). In the "portability" category, the Vivo S50 notably outperforms the Redmi K90 Ultra (66/100 vs 40/100).
| Specification | Redmi K90 Ultra | Vivo S50 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8s Gen 3 | |
| AnTuTu | 3119308 | 1801694 | |
| Geekbench Single | 3041 | 1930 | |
| Geekbench Multi | 9494 | 4817 | |
| Display | 6.8" AMOLED | 6.6" AMOLED | |
| Resolution | 1280x2772 | 1260x2750 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8550 mAh | 6500 mAh | |
| Charging | 100W | 90W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 8 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 20 MP | 50 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB | |
| Storage | 256GB / 512GB | 256GB / 512GB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | yes | |
| Protection | IP68/IP69 | IP68/IP69 | |
| Dimensions | 162.9×77.9×8.2 mm | 157.5×74.3×7.6 mm | |
| Weight | 227 g | 196 g | |
| Price | $420 | $390 |
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Vivo S50
- Main: 50MP f/f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 50MP
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Vivo S50
- 6.6" AMOLED
- Resolution: 1260x2750
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Vivo S50
- 6500 mAh
- Wired: 90W
- No wireless charging
We compared Redmi K90 Ultra and Vivo S50, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Vivo S50 by 73.1% in our overall performance rating.
Price difference: $30. Vivo S50 is cheaper by $30.
performance
In the "performance" category, the Redmi K90 Ultra notably outperforms the Vivo S50 (92/100 vs 75/100).
display
In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 85/100).
camera
In the "camera" category, the Vivo S50 notably outperforms the Redmi K90 Ultra (64/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra is a bit better (78/100 vs 68/100).
portability
In the "portability" category, the Vivo S50 notably outperforms the Redmi K90 Ultra (66/100 vs 40/100).
Which is better: the Redmi K90 Ultra or the Vivo S50?
The Redmi K90 Ultra edges out the Vivo S50 by just 1 points — the two devices are very close in overall level.
What is the rating of the Redmi K90 Ultra and the Vivo S50?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Vivo S50 — 72/100.
Which has the better camera: the Redmi K90 Ultra or the Vivo S50?
The Vivo S50 leads on camera score (64/100 vs 37/100).
Which is more powerful: the Redmi K90 Ultra or the Vivo S50?
The Redmi K90 Ultra leads on performance (92/100 vs 75/100).
Should you choose the Redmi K90 Ultra over the Vivo S50?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life. The Vivo S50 is a better fit for active users.