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 — 86/100 vs 79/100 (a 7-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 (3,622,315 vs 2,348,248).
Profile comparison
Category scores
Redmi K90 Pro Max
Vivo S21 Pro
What makes Redmi K90 Pro Max better?
- Higher AnTuTu: 3622315 vs 2348248
- Better Geekbench Single: 3639 vs 2249
- Better Geekbench Multi: 11047 vs 7352
- Bigger battery: 7560 vs 5500 mAh
- Faster charging: 100W vs 90W
- Higher performance (97/100 vs 83/100)
- Longer battery life (89/100 vs 64/100)
What makes Vivo S21 Pro better?
- Better camera (81/100 vs 78/100)
- Better display (85/100 vs 81/100)
Comparison verdict
Comparing the Redmi K90 Pro Max vs the Vivo S21 Pro, the Redmi K90 Pro Max scores 7 points higher (86/100 vs 79/100). In the "performance" category, the Redmi K90 Pro Max leads (97/100 vs 83/100). In the "battery" category, the Redmi K90 Pro Max leads (89/100 vs 64/100). In the "performance" category, the Redmi K90 Pro Max is a bit better (97/100 vs 83/100). In the "display" category, the Vivo S21 Pro and the Redmi K90 Pro Max are nearly equal (85/100 vs 81/100). In the "camera" category, the Vivo S21 Pro and the Redmi K90 Pro Max are nearly equal (81/100 vs 78/100). In the "battery" category, the Redmi K90 Pro Max notably outperforms the Vivo S21 Pro (89/100 vs 64/100).
Specs comparison
| Specification | Redmi K90 Pro Max | Vivo S21 Pro | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | MediaTek Dimensity 9300+ | |
| AnTuTu | 3622315 | 2348248 | |
| Geekbench Single | 3639 | 2249 | |
| Geekbench Multi | 11047 | 7352 | |
| 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 | — | |
| Launch price | $561 | — |
Camera comparison
Redmi K90 Pro Max
- Main: 50MP f/1.88
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Vivo S21 Pro
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 50MP
Display comparison
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
Battery and charging
Redmi K90 Pro Max
- 7560 mAh
- Wired: 100W
- Wireless: 50W
Vivo S21 Pro
- 5500 mAh
- Wired: 90W
- No wireless charging
Overall performance score
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 54.3% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Vivo S21 Pro
Price unknownDetailed category analysis
performance
In the "performance" category, the Redmi K90 Pro Max is a bit better (97/100 vs 83/100).
display
In the "display" category, the Vivo S21 Pro and the Redmi K90 Pro Max are nearly equal (85/100 vs 81/100).
camera
In the "camera" category, the Vivo S21 Pro and the Redmi K90 Pro Max are nearly equal (81/100 vs 78/100).
battery
In the "battery" category, the Redmi K90 Pro Max notably outperforms the Vivo S21 Pro (89/100 vs 64/100).
Frequently asked questions
Which is better: the Redmi K90 Pro Max or the Vivo S21 Pro?
The Redmi K90 Pro Max edges out the Vivo S21 Pro by just 7 points — the two devices are very close in overall level.
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 86/100, the Vivo S21 Pro — 79/100.
Which is more powerful: the Redmi K90 Pro Max or the Vivo S21 Pro?
The Redmi K90 Pro Max leads on performance (97/100 vs 83/100).
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, budget-conscious buyers. The Vivo S21 Pro is a better fit for gamers and power users, mobile photography enthusiasts.