Redmi K80 Ultra vs Vivo S21 Pro
The Redmi K80 Ultra (2025) runs on the MediaTek Dimensity 9400+, while the Vivo S21 Pro (2024) runs on the MediaTek Dimensity 9300+. By overall MobileRank rating, the Vivo S21 Pro leads — 63/100 vs 60/100 (a 3-point difference). Key differences: the Redmi K80 Ultra has the bigger battery (7410 mAh vs 5500); the Redmi K80 Ultra is faster in AnTuTu (2,876,004 vs 2,351,914).
Redmi K80 Ultra
Vivo S21 Pro
- Higher AnTuTu: 2876004 vs 2351914
- Better Geekbench Single: 2729 vs 2250
- Better Geekbench Multi: 8430 vs 7315
- Bigger battery: 7410 vs 5500 mAh
- Faster charging: 100W vs 90W
- Higher refresh rate: 144Hz vs 120Hz
- Higher performance (61/100 vs 46/100)
- Longer battery life (72/100 vs 60/100)
- Better value for money (86/100 vs 55/100)
- Better camera (78/100 vs 32/100)
- Better design/ergonomics (50/100 vs 26/100)
Comparing the Redmi K80 Ultra vs the Vivo S21 Pro, the Vivo S21 Pro scores 3 points higher (63/100 vs 60/100). In the "performance" category, the Redmi K80 Ultra leads (61/100 vs 46/100). In the "camera" category, the Vivo S21 Pro leads (78/100 vs 32/100). In the "battery" category, the Redmi K80 Ultra leads (72/100 vs 60/100). In the "value for money" category, the Redmi K80 Ultra leads (86/100 vs 55/100). In the "performance" category, the Redmi K80 Ultra notably outperforms the Vivo S21 Pro (61/100 vs 46/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Vivo S21 Pro significantly outperforms the Redmi K80 Ultra (78/100 vs 32/100). In the "battery" category, the Redmi K80 Ultra is a bit better (72/100 vs 60/100). In the "design" category, the Vivo S21 Pro notably outperforms the Redmi K80 Ultra (50/100 vs 26/100). In the "value for money" category, the Redmi K80 Ultra significantly outperforms the Vivo S21 Pro (86/100 vs 55/100).
| Specification | Redmi K80 Ultra | Vivo S21 Pro | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9400+ | MediaTek Dimensity 9300+ | |
| AnTuTu | 2876004 | 2351914 | |
| Geekbench Single | 2729 | 2250 | |
| Geekbench Multi | 8430 | 7315 | |
| Display | 6.8" OLED | 6.7" AMOLED | |
| Resolution | 1280x2772 | 1260x2800 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 7410 mAh | 5500 mAh | |
| Charging | 100W | 90W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 20 MP | 50 MP | |
| RAM | 12GB / 16GB | 16GB | |
| Storage | 256GB / 512GB / 1TB | 512GB | |
| OS | Android 15 | Android 15, OriginOS 5 | |
| Brightness (peak) | 3200 nits | — | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Weight | 219 g | — | |
| Price | $350 | — |
Redmi K80 Ultra
- Main: 50MP f/f/1.9
- Ultrawide: 8MP
- Front: 20MP
Vivo S21 Pro
- Main: 50MP f/f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 50MP
Redmi K80 Ultra
- 6.8" OLED
- Resolution: 1280x2772
- Refresh rate: 144 Hz
Vivo S21 Pro
- 6.7" AMOLED
- Resolution: 1260x2800
- Refresh rate: 120 Hz
Redmi K80 Ultra
- 7410 mAh
- Wired: 100W
- No wireless charging
Vivo S21 Pro
- 5500 mAh
- Wired: 90W
- No wireless charging
We compared Redmi K80 Ultra and Vivo S21 Pro, covering their specs and all relevant benchmarks.
Redmi K80 Ultra leads Vivo S21 Pro by 22.3% in our overall performance rating.
Vivo S21 Pro
Price unknownperformance
In the "performance" category, the Redmi K80 Ultra notably outperforms the Vivo S21 Pro (61/100 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 significantly outperforms the Redmi K80 Ultra (78/100 vs 32/100).
battery
In the "battery" category, the Redmi K80 Ultra is a bit better (72/100 vs 60/100).
design
In the "design" category, the Vivo S21 Pro notably outperforms the Redmi K80 Ultra (50/100 vs 26/100).
value for money
In the "value for money" category, the Redmi K80 Ultra significantly outperforms the Vivo S21 Pro (86/100 vs 55/100).
Which is better: the Redmi K80 Ultra or the Vivo S21 Pro?
The Vivo S21 Pro edges out the Redmi K80 Ultra by just 3 points — the two devices are very close in overall level.
What is the rating of the Redmi K80 Ultra and the Vivo S21 Pro?
The Redmi K80 Ultra has a MobileRank rating of 60/100, the Vivo S21 Pro — 63/100.
Which has the better camera: the Redmi K80 Ultra or the Vivo S21 Pro?
The Vivo S21 Pro leads on camera score (78/100 vs 32/100).
Which is more powerful: the Redmi K80 Ultra or the Vivo S21 Pro?
The Redmi K80 Ultra leads on performance (61/100 vs 46/100).
Should you choose the Redmi K80 Ultra over the Vivo S21 Pro?
The Redmi K80 Ultra is a better fit for active users, budget-conscious buyers. The Vivo S21 Pro is a better fit for everyday use.