Redmi K90 Pro Max vs Vivo S21 Pro
The Redmi K90 Pro Max (2025) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Vivo S21 Pro (2024) runs on the MediaTek Dimensity 9300+. By overall MobileRank rating, the Redmi K90 Pro Max leads — 84/100 vs 63/100 (a 21-point difference). Key differences: the Redmi K90 Pro Max has the bigger battery (7560 mAh vs 5500); the Redmi K90 Pro Max is faster in AnTuTu (4,119,955 vs 2,351,914).
Redmi K90 Pro Max
Vivo S21 Pro
- Higher AnTuTu: 4119955 vs 2351914
- Better Geekbench Single: 3640 vs 2250
- Better Geekbench Multi: 11033 vs 7315
- Bigger battery: 7560 vs 5500 mAh
- Faster charging: 100W vs 90W
- Higher performance (94/100 vs 46/100)
- Longer battery life (82/100 vs 60/100)
- Better value for money (71/100 vs 55/100)
- Better camera (78/100 vs 74/100)
- Better design/ergonomics (50/100 vs 37/100)
Comparing the Redmi K90 Pro Max vs the Vivo S21 Pro, the Redmi K90 Pro Max scores 21 points higher (84/100 vs 63/100). In the "performance" category, the Redmi K90 Pro Max leads (94/100 vs 46/100). In the "battery" category, the Redmi K90 Pro Max leads (82/100 vs 60/100). In the "value for money" category, the Redmi K90 Pro Max leads (71/100 vs 55/100). In the "performance" category, the Redmi K90 Pro Max significantly outperforms the Vivo S21 Pro (94/100 vs 46/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Vivo S21 Pro and the Redmi K90 Pro Max are nearly equal (78/100 vs 74/100). In the "battery" category, the Redmi K90 Pro Max notably outperforms the Vivo S21 Pro (82/100 vs 60/100). In the "design" category, the Vivo S21 Pro is a bit better (50/100 vs 37/100). In the "value for money" category, the Redmi K90 Pro Max notably outperforms the Vivo S21 Pro (71/100 vs 55/100).
| Specification | Redmi K90 Pro Max | Vivo S21 Pro | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | MediaTek Dimensity 9300+ | |
| AnTuTu | 4119955 | 2351914 | |
| Geekbench Single | 3640 | 2250 | |
| Geekbench Multi | 11033 | 7315 | |
| Display | 6.9" OLED | 6.7" AMOLED | |
| Resolution | 2608x1200 | 1260x2800 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 7560 mAh | 5500 mAh | |
| Charging | 100W | 90W | |
| Wireless charging | 50W | 0W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 50 MP | 50 MP | |
| Telephoto | 50 MP | 50 MP | |
| Front camera | 32 MP | 50 MP | |
| RAM | 16GB | 16GB | |
| Storage | 256GB / 512GB / 1TB | 512GB | |
| OS | Android 16 | Android 15, OriginOS 5 | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 163.3×77.8×7.9 mm | — | |
| Weight | 210 g | — | |
| Price | $561 | — |
Redmi K90 Pro Max
- Main: 50MP f/f/1.88
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Vivo S21 Pro
- Main: 50MP f/f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 50MP
Redmi K90 Pro Max
- 6.9" OLED
- Resolution: 2608x1200
- Refresh rate: 120 Hz
Vivo S21 Pro
- 6.7" AMOLED
- Resolution: 1260x2800
- Refresh rate: 120 Hz
Redmi K90 Pro Max
- 7560 mAh
- Wired: 100W
- Wireless: 50W
Vivo S21 Pro
- 5500 mAh
- Wired: 90W
- No wireless charging
We compared Redmi K90 Pro Max and Vivo S21 Pro, covering their specs and all relevant benchmarks.
Redmi K90 Pro Max leads Vivo S21 Pro by 75.2% in our overall performance rating.
Vivo S21 Pro
Price unknownperformance
In the "performance" category, the Redmi K90 Pro Max significantly outperforms the Vivo S21 Pro (94/100 vs 46/100).
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, the Vivo S21 Pro and the Redmi K90 Pro Max are nearly equal (78/100 vs 74/100).
battery
In the "battery" category, the Redmi K90 Pro Max notably outperforms the Vivo S21 Pro (82/100 vs 60/100).
design
In the "design" category, the Vivo S21 Pro is a bit better (50/100 vs 37/100).
value for money
In the "value for money" category, the Redmi K90 Pro Max notably outperforms the Vivo S21 Pro (71/100 vs 55/100).
Which is better: the Redmi K90 Pro Max or the Vivo S21 Pro?
The Redmi K90 Pro Max significantly outperforms the Vivo S21 Pro by 21 points (84/100 vs 63/100).
What is the rating of the Redmi K90 Pro Max and the Vivo S21 Pro?
The Redmi K90 Pro Max has a MobileRank rating of 84/100, the Vivo S21 Pro — 63/100.
Which is more powerful: the Redmi K90 Pro Max or the Vivo S21 Pro?
The Redmi K90 Pro Max leads on performance (94/100 vs 46/100).
Should you choose the Redmi K90 Pro Max over the Vivo S21 Pro?
The Redmi K90 Pro Max is a better fit for gamers and power users, those who care about battery life. The Vivo S21 Pro is a better fit for everyday use.