Vivo iQOO 15 Ultra vs Vivo Y51
The Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Vivo Y51 (2020) runs on the Qualcomm Snapdragon 665. By overall MobileRank rating, the Vivo iQOO 15 Ultra leads — 89/100 vs 40/100 (a 49-point difference). Key differences: the Vivo iQOO 15 Ultra has the bigger battery (7400 mAh vs 5000); the main camera is 50 MP vs 48 MP; the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 329,457); the Vivo iQOO 15 Ultra has NFC for contactless payments, the Vivo Y51 doesn't; the Vivo Y51 is noticeably lighter (186g vs 227g).
Profile comparison
Category scores
Vivo iQOO 15 Ultra
Vivo Y51
What makes Vivo iQOO 15 Ultra better?
- Higher AnTuTu: 4602290 vs 329457
- Better Geekbench Single: 3639 vs 321
- Better Geekbench Multi: 11047 vs 1128
- Bigger battery: 7400 vs 5000 mAh
- Faster charging: 120W vs 18W
- Better main camera: 50MP vs 48MP
- Higher performance (99/100 vs 24/100)
- Better camera (78/100 vs 34/100)
- Longer battery life (92/100 vs 43/100)
- Better display (99/100 vs 83/100)
What makes Vivo Y51 better?
- Lighter: 186g vs 227g
- Better portability (59/100 vs 35/100)
Comparison verdict
Comparing the Vivo iQOO 15 Ultra vs the Vivo Y51, the Vivo iQOO 15 Ultra scores 49 points higher (89/100 vs 40/100). In the "performance" category, the Vivo iQOO 15 Ultra leads (99/100 vs 24/100). In the "camera" category, the Vivo iQOO 15 Ultra leads (78/100 vs 34/100). In the "battery" category, the Vivo iQOO 15 Ultra leads (92/100 vs 43/100). In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y51 (99/100 vs 24/100). In the "display" category, the Vivo iQOO 15 Ultra notably outperforms the Vivo Y51 (99/100 vs 83/100). In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y51 (78/100 vs 34/100). In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y51 (92/100 vs 43/100). In the "portability" category, the Vivo Y51 notably outperforms the Vivo iQOO 15 Ultra (59/100 vs 35/100).
Specs comparison
| Specification | Vivo iQOO 15 Ultra | Vivo Y51 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | Qualcomm Snapdragon 665 | |
| AnTuTu | 4602290 | 329457 | |
| Geekbench Single | 3639 | 321 | |
| Geekbench Multi | 11047 | 1128 | |
| Display | 6.8" LTPO AMOLED | 6.4" Super AMOLED | |
| Resolution | 1440x3168 | 1080x2340 | |
| Refresh rate | 144 Hz | — | |
| Battery | 7400 mAh | 5000 mAh | |
| Charging | 120W | 18W | |
| Wireless charging | 50W | 0W | |
| Main camera | 50 MP | 48 MP | |
| Ultrawide | 50 MP | 8 MP | |
| Telephoto | 50 MP | 0 MP | |
| Front camera | 32 MP | 16 MP | |
| RAM | 12GB / 16GB / 24GB | 8GB | |
| Storage | 256GB / 512GB / 1TB | 128GB | |
| OS | Android 16 | Android 10, Funtouch 10 | |
| Brightness (peak) | 8000 nits | — | |
| NFC | yes | no | |
| Protection | IP68 | — | |
| Dimensions | 163.7×76.8×8.7 mm | 159.3×75.2×8.7 mm | |
| Weight | 227 g | 186 g | |
| Launch price | $799 | — |
Camera comparison
Vivo iQOO 15 Ultra
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Vivo Y51
- Main: 48MP f/1.8
- Ultrawide: 8MP
- Front: 16MP
Display comparison
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Vivo Y51
- 6.4" Super AMOLED
- Resolution: 1080x2340
- Refresh rate: —
Battery and charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Vivo Y51
- 5000 mAh
- Wired: 18W
- No wireless charging
Overall performance score
We compared Vivo iQOO 15 Ultra and Vivo Y51, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads Vivo Y51 by 1296.9% 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 Vivo iQOO 15 Ultra significantly outperforms the Vivo Y51 (99/100 vs 24/100).
display
In the "display" category, the Vivo iQOO 15 Ultra notably outperforms the Vivo Y51 (99/100 vs 83/100).
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y51 (78/100 vs 34/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y51 (92/100 vs 43/100).
portability
In the "portability" category, the Vivo Y51 notably outperforms the Vivo iQOO 15 Ultra (59/100 vs 35/100).
Frequently asked questions
Which is better: the Vivo iQOO 15 Ultra or the Vivo Y51?
The Vivo iQOO 15 Ultra significantly outperforms the Vivo Y51 by 49 points (89/100 vs 40/100).
What is the rating of the Vivo iQOO 15 Ultra and the Vivo Y51?
The Vivo iQOO 15 Ultra has a MobileRank rating of 89/100, the Vivo Y51 — 40/100.
Which has the better camera: the Vivo iQOO 15 Ultra or the Vivo Y51?
The Vivo iQOO 15 Ultra leads on camera score (78/100 vs 34/100).
Which is more powerful: the Vivo iQOO 15 Ultra or the Vivo Y51?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 24/100).
Should you choose the Vivo iQOO 15 Ultra over the Vivo Y51?
The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.