Redmi K90 Ultra vs Vivo S30
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Vivo S30 (2025) runs on the Qualcomm Snapdragon 7 Gen 4; launch prices were $420 and $345. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 68/100 (a 5-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 6500); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 1,329,936); the Vivo S30 is noticeably lighter (192g vs 227g).
Profile comparison
Category scores
Redmi K90 Ultra
Vivo S30
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 1329936
- Better Geekbench Single: 3013 vs 1270
- Better Geekbench Multi: 9287 vs 4106
- Bigger battery: 8550 vs 6500 mAh
- Faster charging: 100W vs 90W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (92/100 vs 66/100)
- Longer battery life (78/100 vs 68/100)
- Better display (94/100 vs 85/100)
What makes Vivo S30 better?
- Lighter: 192g vs 227g
- Cheaper at launch: $345 vs $420
- Better camera (64/100 vs 37/100)
- Better portability (69/100 vs 40/100)
Comparison verdict
Comparing the Redmi K90 Ultra vs the Vivo S30, the Redmi K90 Ultra scores 5 points higher (73/100 vs 68/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 66/100). In the "camera" category, the Vivo S30 leads (64/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 68/100). Value score: Redmi K90 Ultra — 72/100, Vivo S30 — 70/100; it shows how far a model sits above or below the usual level for its price, and is not part of the overall rating. In the "performance" category, the Redmi K90 Ultra notably outperforms the Vivo S30 (92/100 vs 66/100). In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 85/100). In the "camera" category, the Vivo S30 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 S30 notably outperforms the Redmi K90 Ultra (69/100 vs 40/100).
Specs comparison
| Specification | Redmi K90 Ultra | Vivo S30 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 7 Gen 4 | |
| AnTuTu | 3233695 | 1329936 | |
| Geekbench Single | 3013 | 1270 | |
| Geekbench Multi | 9287 | 4106 | |
| Display | 6.8" AMOLED | 6.7" AMOLED | |
| Resolution | 1280x2772 | 1260x2800 | |
| 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 15 | |
| Brightness (peak) | 3500 nits | 5000 nits | |
| NFC | yes | yes | |
| Protection | IP68/IP69 | — | |
| Dimensions | 162.9×77.9×8.2 mm | 160.2×74.4×7.5 mm | |
| Weight | 227 g | 192 g | |
| Launch price | $420 | $345 |
Camera comparison
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Vivo S30
- Main: 50MP
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 50MP
Display comparison
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Vivo S30
- 6.7" AMOLED
- Resolution: 1260x2800
- Refresh rate: 120 Hz
Battery and charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Vivo S30
- 6500 mAh
- Wired: 90W
- No wireless charging
Overall performance score
We compared Redmi K90 Ultra and Vivo S30, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Vivo S30 by 143.1% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $75. Vivo S30 was $75 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra notably outperforms the Vivo S30 (92/100 vs 66/100).
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 S30 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 S30 notably outperforms the Redmi K90 Ultra (69/100 vs 40/100).
Frequently asked questions
Which is better: the Redmi K90 Ultra or the Vivo S30?
The Redmi K90 Ultra edges out the Vivo S30 by just 5 points — the two devices are very close in overall level.
What is the rating of the Redmi K90 Ultra and the Vivo S30?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Vivo S30 — 68/100.
Which has the better camera: the Redmi K90 Ultra or the Vivo S30?
The Vivo S30 leads on camera score (64/100 vs 37/100).
Which is more powerful: the Redmi K90 Ultra or the Vivo S30?
The Redmi K90 Ultra leads on performance (92/100 vs 66/100).
Should you choose the Redmi K90 Ultra over the Vivo S30?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life. The Vivo S30 is a better fit for active users.