Redmi K90 Ultra vs Vivo Y51 Pro
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Vivo Y51 Pro (2026) runs on the MediaTek Dimensity 7360 Turbo; launch prices were $420 and $230. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 49/100 (a 24-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 7200); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 925,409); the Redmi K90 Ultra has NFC for contactless payments, the Vivo Y51 Pro doesn't.
Profile comparison
Category scores
Redmi K90 Ultra
Vivo Y51 Pro
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 925409
- Better Geekbench Single: 3013 vs 1025
- Better Geekbench Multi: 9287 vs 2882
- Bigger battery: 8550 vs 7200 mAh
- Faster charging: 100W vs 44W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (92/100 vs 56/100)
- Better camera (37/100 vs 30/100)
- Longer battery life (78/100 vs 60/100)
- Better display (94/100 vs 55/100)
What makes Vivo Y51 Pro better?
- Lighter: 219g vs 227g
- Cheaper at launch: $230 vs $420
- Better portability (43/100 vs 40/100)
Comparison verdict
Comparing the Redmi K90 Ultra vs the Vivo Y51 Pro, the Redmi K90 Ultra scores 24 points higher (73/100 vs 49/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 56/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 60/100). Value score: Redmi K90 Ultra — 72/100, Vivo Y51 Pro — 52/100; it shows how far a model sits above or below the usual level for its price, and is not part of the overall rating. In the "performance" category, the Redmi K90 Ultra significantly outperforms the Vivo Y51 Pro (92/100 vs 56/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Vivo Y51 Pro (94/100 vs 55/100). In the "camera" category, the Redmi K90 Ultra is a bit better (37/100 vs 30/100). In the "battery" category, the Redmi K90 Ultra notably outperforms the Vivo Y51 Pro (78/100 vs 60/100). In the "portability" category, the Vivo Y51 Pro and the Redmi K90 Ultra are nearly equal (43/100 vs 40/100).
Specs comparison
| Specification | Redmi K90 Ultra | Vivo Y51 Pro | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | MediaTek Dimensity 7360 Turbo | |
| AnTuTu | 3233695 | 925409 | |
| Geekbench Single | 3013 | 1025 | |
| Geekbench Multi | 9287 | 2882 | |
| Display | 6.8" AMOLED | 6.8" IPS LCD | |
| Resolution | 1280x2772 | 720x1570 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8550 mAh | 7200 mAh | |
| Charging | 100W | 44W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 20 MP | 8 MP | |
| RAM | 12GB / 16GB | 8GB | |
| Storage | 256GB / 512GB | 128GB / 256GB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 3500 nits | 1250 nits | |
| NFC | yes | no | |
| Protection | IP68/IP69 | IP68 | |
| Dimensions | 162.9×77.9×8.2 mm | 166.6×78.4×8.4 mm | |
| Weight | 227 g | 219 g | |
| Launch price | $420 | $230 |
Camera comparison
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Vivo Y51 Pro
- Main: 50MP f/2.0
- Front: 8MP
Display comparison
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Vivo Y51 Pro
- 6.8" IPS LCD
- Resolution: 720x1570
- Refresh rate: 120 Hz
Battery and charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Vivo Y51 Pro
- 7200 mAh
- Wired: 44W
- No wireless charging
Overall performance score
We compared Redmi K90 Ultra and Vivo Y51 Pro, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Vivo Y51 Pro by 249.4% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $190. Vivo Y51 Pro was $190 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Vivo Y51 Pro (92/100 vs 56/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Vivo Y51 Pro (94/100 vs 55/100).
camera
In the "camera" category, the Redmi K90 Ultra is a bit better (37/100 vs 30/100).
battery
In the "battery" category, the Redmi K90 Ultra notably outperforms the Vivo Y51 Pro (78/100 vs 60/100).
portability
In the "portability" category, the Vivo Y51 Pro and the Redmi K90 Ultra are nearly equal (43/100 vs 40/100).
Frequently asked questions
Which is better: the Redmi K90 Ultra or the Vivo Y51 Pro?
The Redmi K90 Ultra significantly outperforms the Vivo Y51 Pro by 24 points (73/100 vs 49/100).
What is the rating of the Redmi K90 Ultra and the Vivo Y51 Pro?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Vivo Y51 Pro — 49/100.
Which has the better camera: the Redmi K90 Ultra or the Vivo Y51 Pro?
The Redmi K90 Ultra leads on camera score (37/100 vs 30/100).
Which is more powerful: the Redmi K90 Ultra or the Vivo Y51 Pro?
The Redmi K90 Ultra leads on performance (92/100 vs 56/100).
Should you choose the Redmi K90 Ultra over the Vivo Y51 Pro?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.