Redmi K80 Ultra vs Vivo Y81i
The Redmi K80 Ultra (2025) runs on the MediaTek Dimensity 9400+, while the Vivo Y81i (2018) runs on the MediaTek Helio A22. By overall MobileRank rating, the Redmi K80 Ultra leads — 73/100 vs 18/100 (a 55-point difference). Key differences: the Redmi K80 Ultra has the bigger battery (7410 mAh vs 3260); the main camera is 50 MP vs 13 MP; the Redmi K80 Ultra is faster in AnTuTu (2,874,956 vs 155,362); the Redmi K80 Ultra has NFC for contactless payments, the Vivo Y81i doesn't; the Vivo Y81i is noticeably lighter (143g vs 219g).
Profile comparison
Category scores
Redmi K80 Ultra
Vivo Y81i
What makes Redmi K80 Ultra better?
- Higher AnTuTu: 2874956 vs 155362
- Better Geekbench Single: 2729 vs 300
- Better Geekbench Multi: 8430 vs 486
- Bigger battery: 7410 vs 3260 mAh
- Better main camera: 50MP vs 13MP
- Higher performance (89/100 vs 10/100)
- Better camera (37/100 vs 10/100)
- Longer battery life (86/100 vs 15/100)
- Better display (94/100 vs 39/100)
What makes Vivo Y81i better?
- Lighter: 143g vs 219g
- Better portability (85/100 vs 40/100)
Comparison verdict
Comparing the Redmi K80 Ultra vs the Vivo Y81i, the Redmi K80 Ultra scores 55 points higher (73/100 vs 18/100). In the "performance" category, the Redmi K80 Ultra leads (89/100 vs 10/100). In the "camera" category, the Redmi K80 Ultra leads (37/100 vs 10/100). In the "battery" category, the Redmi K80 Ultra leads (86/100 vs 15/100). In the "performance" category, the Redmi K80 Ultra significantly outperforms the Vivo Y81i (89/100 vs 10/100). In the "display" category, the Redmi K80 Ultra significantly outperforms the Vivo Y81i (94/100 vs 39/100). In the "camera" category, the Redmi K80 Ultra notably outperforms the Vivo Y81i (37/100 vs 10/100). In the "battery" category, the Redmi K80 Ultra significantly outperforms the Vivo Y81i (86/100 vs 15/100). In the "portability" category, the Vivo Y81i significantly outperforms the Redmi K80 Ultra (85/100 vs 40/100).
Specs comparison
| Specification | Redmi K80 Ultra | Vivo Y81i | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9400+ | MediaTek Helio A22 | |
| AnTuTu | 2874956 | 155362 | |
| Geekbench Single | 2729 | 300 | |
| Geekbench Multi | 8430 | 486 | |
| Display | 6.8" OLED | 6.2" IPS LCD | |
| Resolution | 1280x2772 | 720x1520 | |
| Refresh rate | 144 Hz | — | |
| Battery | 7410 mAh | 3260 mAh | |
| Charging | 100W | — | |
| Main camera | 50 MP | 13 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 20 MP | 5 MP | |
| RAM | 12GB / 16GB | 2GB | |
| Storage | 256GB / 512GB / 1TB | 16GB | |
| OS | Android 15 | Android 8.1 (Oreo); Funtouch 4 | |
| Brightness (peak) | 3200 nits | — | |
| NFC | yes | no | |
| Protection | IP68 | — | |
| Dimensions | — | 155.1×75.0×7.8 mm | |
| Weight | 219 g | 143 g | |
| Launch price | $350 | — |
Camera comparison
Redmi K80 Ultra
- Main: 50MP f/1.9
- Ultrawide: 8MP
- Front: 20MP
Vivo Y81i
- Main: 13MP f/2.2
- Front: 5MP
Display comparison
Redmi K80 Ultra
- 6.8" OLED
- Resolution: 1280x2772
- Refresh rate: 144 Hz
Vivo Y81i
- 6.2" IPS LCD
- Resolution: 720x1520
- Refresh rate: —
Battery and charging
Redmi K80 Ultra
- 7410 mAh
- Wired: 100W
- Wireless charging: no data
Vivo Y81i
- 3260 mAh
- Wireless charging: no data
Overall performance score
We compared Redmi K80 Ultra and Vivo Y81i, covering their specs and all relevant benchmarks.
Redmi K80 Ultra leads Vivo Y81i by 1750.5% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Vivo Y81i
Price unknownDetailed category analysis
performance
In the "performance" category, the Redmi K80 Ultra significantly outperforms the Vivo Y81i (89/100 vs 10/100).
display
In the "display" category, the Redmi K80 Ultra significantly outperforms the Vivo Y81i (94/100 vs 39/100).
camera
In the "camera" category, the Redmi K80 Ultra notably outperforms the Vivo Y81i (37/100 vs 10/100).
battery
In the "battery" category, the Redmi K80 Ultra significantly outperforms the Vivo Y81i (86/100 vs 15/100).
portability
In the "portability" category, the Vivo Y81i significantly outperforms the Redmi K80 Ultra (85/100 vs 40/100).
Frequently asked questions
Which is better: the Redmi K80 Ultra or the Vivo Y81i?
The Redmi K80 Ultra significantly outperforms the Vivo Y81i by 55 points (73/100 vs 18/100).
What is the rating of the Redmi K80 Ultra and the Vivo Y81i?
The Redmi K80 Ultra has a MobileRank rating of 73/100, the Vivo Y81i — 18/100.
Which has the better camera: the Redmi K80 Ultra or the Vivo Y81i?
The Redmi K80 Ultra leads on camera score (37/100 vs 10/100).
Which is more powerful: the Redmi K80 Ultra or the Vivo Y81i?
The Redmi K80 Ultra leads on performance (89/100 vs 10/100).
Should you choose the Redmi K80 Ultra over the Vivo Y81i?
The Redmi K80 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.