Vivo Y51 vs Xiaomi 17 Ultra (China)
The Vivo Y51 (2020) runs on the Qualcomm Snapdragon 665, while the Xiaomi 17 Ultra (China) (2025) runs on the Snapdragon 8 Elite Gen 5. By overall MobileRank rating, the Xiaomi 17 Ultra (China) leads — 87/100 vs 40/100 (a 47-point difference). Key differences: the Xiaomi 17 Ultra (China) has the bigger battery (6800 mAh vs 5000); the main camera is 48 MP vs 50 MP; the Xiaomi 17 Ultra (China) is faster in AnTuTu (3,950,082 vs 329,457); the Xiaomi 17 Ultra (China) has NFC for contactless payments, the Vivo Y51 doesn't; the Vivo Y51 is noticeably lighter (186g vs 224g).
Profile comparison
Category scores
Vivo Y51
Xiaomi 17 Ultra (China)
What makes Vivo Y51 better?
- Lighter: 186g vs 224g
- Better display (83/100 vs 81/100)
- Better portability (59/100 vs 42/100)
What makes Xiaomi 17 Ultra (China) better?
- Higher AnTuTu: 3950082 vs 329457
- Better Geekbench Single: 3639 vs 321
- Better Geekbench Multi: 11047 vs 1128
- Bigger battery: 6800 vs 5000 mAh
- Faster charging: 90W vs 18W
- Better main camera: 50MP vs 48MP
- Higher performance (98/100 vs 24/100)
- Better camera (87/100 vs 34/100)
- Longer battery life (83/100 vs 43/100)
Comparison verdict
Comparing the Vivo Y51 vs the Xiaomi 17 Ultra (China), the Xiaomi 17 Ultra (China) scores 47 points higher (87/100 vs 40/100). In the "performance" category, the Xiaomi 17 Ultra (China) leads (98/100 vs 24/100). In the "camera" category, the Xiaomi 17 Ultra (China) leads (87/100 vs 34/100). In the "battery" category, the Xiaomi 17 Ultra (China) leads (83/100 vs 43/100). In the "performance" category, the Xiaomi 17 Ultra (China) significantly outperforms the Vivo Y51 (98/100 vs 24/100). In the "display" category, the Vivo Y51 and the Xiaomi 17 Ultra (China) are nearly equal (83/100 vs 81/100). In the "camera" category, the Xiaomi 17 Ultra (China) significantly outperforms the Vivo Y51 (87/100 vs 34/100). In the "battery" category, the Xiaomi 17 Ultra (China) significantly outperforms the Vivo Y51 (83/100 vs 43/100). In the "portability" category, the Vivo Y51 notably outperforms the Xiaomi 17 Ultra (China) (59/100 vs 42/100).
Specs comparison
| Specification | Vivo Y51 | Xiaomi 17 Ultra (China) | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 665 | Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 329457 | 3950082 | |
| Geekbench Single | 321 | 3639 | |
| Geekbench Multi | 1128 | 11047 | |
| Display | 6.4" Super AMOLED | 6.9" LTPO AMOLED | |
| Resolution | 1080x2340 | 1200x2608 | |
| Refresh rate | — | 120 Hz | |
| Battery | 5000 mAh | 6800 mAh | |
| Charging | 18W | 90W | |
| Wireless charging | 0W | 50W | |
| Main camera | 48 MP | 50 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 200 MP | |
| Front camera | 16 MP | 50 MP | |
| RAM | 8GB | 12GB / 16GB | |
| Storage | 128GB | 512GB / 1TB | |
| OS | Android 10, Funtouch 10 | Android 16 | |
| NFC | no | yes | |
| Protection | — | IP68/IP69 | |
| Dimensions | 159.3×75.2×8.7 mm | 162.9×77.6×8.3 mm | |
| Weight | 186 g | 224 g | |
| Launch price | — | $892 |
Camera comparison
Vivo Y51
- Main: 48MP f/1.8
- Ultrawide: 8MP
- Front: 16MP
Xiaomi 17 Ultra (China)
- Main: 50MP f/1.7
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 50MP
Display comparison
Vivo Y51
- 6.4" Super AMOLED
- Resolution: 1080x2340
- Refresh rate: —
Xiaomi 17 Ultra (China)
- 6.9" LTPO AMOLED
- Resolution: 1200x2608
- Refresh rate: 120 Hz
Battery and charging
Vivo Y51
- 5000 mAh
- Wired: 18W
- No wireless charging
Xiaomi 17 Ultra (China)
- 6800 mAh
- Wired: 90W
- Wireless: 50W
Overall performance score
We compared Vivo Y51 and Xiaomi 17 Ultra (China), covering their specs and all relevant benchmarks.
Xiaomi 17 Ultra (China) leads Vivo Y51 by 91.7% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Vivo Y51
Price unknownDetailed category analysis
performance
In the "performance" category, the Xiaomi 17 Ultra (China) significantly outperforms the Vivo Y51 (98/100 vs 24/100).
display
In the "display" category, the Vivo Y51 and the Xiaomi 17 Ultra (China) are nearly equal (83/100 vs 81/100).
camera
In the "camera" category, the Xiaomi 17 Ultra (China) significantly outperforms the Vivo Y51 (87/100 vs 34/100).
battery
In the "battery" category, the Xiaomi 17 Ultra (China) significantly outperforms the Vivo Y51 (83/100 vs 43/100).
portability
In the "portability" category, the Vivo Y51 notably outperforms the Xiaomi 17 Ultra (China) (59/100 vs 42/100).
Frequently asked questions
Which is better: the Vivo Y51 or the Xiaomi 17 Ultra (China)?
The Xiaomi 17 Ultra (China) significantly outperforms the Vivo Y51 by 47 points (87/100 vs 40/100).
What is the rating of the Vivo Y51 and the Xiaomi 17 Ultra (China)?
The Vivo Y51 has a MobileRank rating of 40/100, the Xiaomi 17 Ultra (China) — 87/100.
Which has the better camera: the Vivo Y51 or the Xiaomi 17 Ultra (China)?
The Xiaomi 17 Ultra (China) leads on camera score (87/100 vs 34/100).
Which is more powerful: the Vivo Y51 or the Xiaomi 17 Ultra (China)?
The Xiaomi 17 Ultra (China) leads on performance (98/100 vs 24/100).
Should you choose the Vivo Y51 over the Xiaomi 17 Ultra (China)?
The Xiaomi 17 Ultra (China) is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.