Redmi K90 vs Vivo S1 Prime
The Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Vivo S1 Prime (2020) runs on the Qualcomm Snapdragon 665. By overall MobileRank rating, the Redmi K90 leads — 76/100 vs 38/100 (a 38-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 4500); the main camera is 50 MP vs 48 MP; the Redmi K90 is faster in AnTuTu (3,077,585 vs 329,457); the Redmi K90 has NFC for contactless payments, the Vivo S1 Prime doesn't; the Vivo S1 Prime is noticeably lighter (190g vs 206g).
Profile comparison
Category scores
Redmi K90
Vivo S1 Prime
What makes Redmi K90 better?
- Higher AnTuTu: 3077585 vs 329457
- Better Geekbench Single: 3013 vs 321
- Better Geekbench Multi: 9287 vs 1128
- Bigger battery: 7100 vs 4500 mAh
- Faster charging: 100W vs 18W
- Better main camera: 50MP vs 48MP
- Higher performance (91/100 vs 24/100)
- Better camera (58/100 vs 34/100)
- Longer battery life (72/100 vs 33/100)
What makes Vivo S1 Prime better?
- Lighter: 190g vs 206g
- Better display (83/100 vs 82/100)
- Better portability (57/100 vs 55/100)
Comparison verdict
Comparing the Redmi K90 vs the Vivo S1 Prime, the Redmi K90 scores 38 points higher (76/100 vs 38/100). In the "performance" category, the Redmi K90 leads (91/100 vs 24/100). In the "camera" category, the Redmi K90 leads (58/100 vs 34/100). In the "battery" category, the Redmi K90 leads (72/100 vs 33/100). In the "performance" category, the Redmi K90 significantly outperforms the Vivo S1 Prime (91/100 vs 24/100). In the "display" category, the Vivo S1 Prime and the Redmi K90 are nearly equal (83/100 vs 82/100). In the "camera" category, the Redmi K90 notably outperforms the Vivo S1 Prime (58/100 vs 34/100). In the "battery" category, the Redmi K90 significantly outperforms the Vivo S1 Prime (72/100 vs 33/100). In the "portability" category, the Vivo S1 Prime and the Redmi K90 are nearly equal (57/100 vs 55/100).
Specs comparison
| Specification | Redmi K90 | Vivo S1 Prime | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 665 | |
| AnTuTu | 3077585 | 329457 | |
| Geekbench Single | 3013 | 321 | |
| Geekbench Multi | 9287 | 1128 | |
| Display | 6.6" AMOLED | 6.4" AMOLED | |
| Resolution | 2510x1156 | 1080x2340 | |
| Refresh rate | 120 Hz | — | |
| Battery | 7100 mAh | 4500 mAh | |
| Charging | 100W | 18W | |
| Main camera | 50 MP | 48 MP | |
| Ultrawide | 8 MP | 8 MP | |
| Telephoto | 50 MP | 0 MP | |
| Front camera | 20 MP | 16 MP | |
| RAM | 12GB / 16GB | 8GB | |
| Storage | 256GB / 512GB | 128GB | |
| OS | Android 16 | Android 9.0 (Pie), Funtouch 9.2 | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | no | |
| Protection | IP68 | — | |
| Dimensions | 157.5×75.3×8.0 mm | 159.3×75.2×8.7 mm | |
| Weight | 206 g | 190 g | |
| Launch price | $401 | — |
Camera comparison
Redmi K90
- Main: 50MP f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Vivo S1 Prime
- Main: 48MP f/1.8
- Ultrawide: 8MP
- Front: 16MP
Display comparison
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Vivo S1 Prime
- 6.4" AMOLED
- Resolution: 1080x2340
- Refresh rate: —
Battery and charging
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
Vivo S1 Prime
- 4500 mAh
- Wired: 18W
- No wireless charging
Overall performance score
We compared Redmi K90 and Vivo S1 Prime, covering their specs and all relevant benchmarks.
Redmi K90 leads Vivo S1 Prime by 834.1% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Vivo S1 Prime
Price unknownDetailed category analysis
performance
In the "performance" category, the Redmi K90 significantly outperforms the Vivo S1 Prime (91/100 vs 24/100).
display
In the "display" category, the Vivo S1 Prime and the Redmi K90 are nearly equal (83/100 vs 82/100).
camera
In the "camera" category, the Redmi K90 notably outperforms the Vivo S1 Prime (58/100 vs 34/100).
battery
In the "battery" category, the Redmi K90 significantly outperforms the Vivo S1 Prime (72/100 vs 33/100).
portability
In the "portability" category, the Vivo S1 Prime and the Redmi K90 are nearly equal (57/100 vs 55/100).
Frequently asked questions
Which is better: the Redmi K90 or the Vivo S1 Prime?
The Redmi K90 significantly outperforms the Vivo S1 Prime by 38 points (76/100 vs 38/100).
What is the rating of the Redmi K90 and the Vivo S1 Prime?
The Redmi K90 has a MobileRank rating of 76/100, the Vivo S1 Prime — 38/100.
Which has the better camera: the Redmi K90 or the Vivo S1 Prime?
The Redmi K90 leads on camera score (58/100 vs 34/100).
Which is more powerful: the Redmi K90 or the Vivo S1 Prime?
The Redmi K90 leads on performance (91/100 vs 24/100).
Should you choose the Redmi K90 over the Vivo S1 Prime?
The Redmi K90 is a better fit for gamers and power users, budget-conscious buyers.