Vivo iQOO 15 Ultra vs Vivo X300s
The Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Vivo X300s (2026) runs on the Dimensity 9500; estimated prices are $799 and $723. Both devices score the same overall rating of 89/100. Key differences: the Vivo iQOO 15 Ultra has the bigger battery (7400 mAh vs 7100); the main camera is 50 MP vs 200 MP; the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 3,703,823).
Vivo iQOO 15 Ultra
Vivo X300s
- Higher AnTuTu: 4602290 vs 3703823
- Better Geekbench Single: 3640 vs 3228
- Better Geekbench Multi: 11033 vs 9553
- Bigger battery: 7400 vs 7100 mAh
- Faster charging: 120W vs 90W
- Faster wireless charging: 50W vs 40W
- Higher performance (99/100 vs 94/100)
- Longer battery life (92/100 vs 83/100)
- Better display (99/100 vs 94/100)
- Better main camera: 200MP vs 50MP
- Lighter: 217g vs 227g
- Cheaper: $723 vs $799
- Better camera (94/100 vs 78/100)
- Better portability (42/100 vs 35/100)
The Vivo iQOO 15 Ultra and the Vivo X300s received the same MobileRank rating — 89/100. In the "camera" category, the Vivo X300s leads (94/100 vs 78/100). In the "performance" category, the Vivo iQOO 15 Ultra is a bit better (99/100 vs 94/100). In the "display" category, the Vivo iQOO 15 Ultra is a bit better (99/100 vs 94/100). In the "camera" category, the Vivo X300s notably outperforms the Vivo iQOO 15 Ultra (94/100 vs 78/100). In the "battery" category, the Vivo iQOO 15 Ultra is a bit better (92/100 vs 83/100). In the "portability" category, the Vivo X300s is a bit better (42/100 vs 35/100). In the "value for money" category, both devices are on the same level — 90/100.
| Specification | Vivo iQOO 15 Ultra | Vivo X300s | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | Dimensity 9500 | |
| AnTuTu | 4602290 | 3703823 | |
| Geekbench Single | 3640 | 3228 | |
| Geekbench Multi | 11033 | 9553 | |
| Display | 6.8" LTPO AMOLED | 6.8" LTPO AMOLED | |
| Resolution | 1440x3168 | 2800x1260 | |
| Refresh rate | 144 Hz | 144 Hz | |
| Battery | 7400 mAh | 7100 mAh | |
| Charging | 120W | 90W | |
| Wireless charging | 50W | 40W | |
| Main camera | 50 MP | 200 MP | |
| Ultrawide | 50 MP | 50 MP | |
| Telephoto | 50 MP | 50 MP | |
| Front camera | 32 MP | 50 MP | |
| RAM | 12GB / 16GB / 24GB | 12GB / 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 16 / OriginOS 6 | |
| Brightness (peak) | 8000 nits | — | |
| NFC | yes | — | |
| Protection | IP68 | — | |
| Dimensions | 163.7×76.8×8.7 mm | — | |
| Weight | 227 g | 217 g | |
| Price | $799 | $723 |
Vivo iQOO 15 Ultra
- Main: 50MP f/f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Vivo X300s
- Main: 200MP f/f/1.7
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 50MP
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Vivo X300s
- 6.8" LTPO AMOLED
- Resolution: 2800x1260
- Refresh rate: 144 Hz
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Vivo X300s
- 7100 mAh
- Wired: 90W
- Wireless: 40W
We compared Vivo iQOO 15 Ultra and Vivo X300s, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads Vivo X300s by 24.3% in our overall performance rating.
Price difference: $76. Vivo X300s is cheaper by $76.
performance
In the "performance" category, the Vivo iQOO 15 Ultra is a bit better (99/100 vs 94/100).
display
In the "display" category, the Vivo iQOO 15 Ultra is a bit better (99/100 vs 94/100).
camera
In the "camera" category, the Vivo X300s notably outperforms the Vivo iQOO 15 Ultra (94/100 vs 78/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra is a bit better (92/100 vs 83/100).
portability
In the "portability" category, the Vivo X300s is a bit better (42/100 vs 35/100).
value for money
In the "value for money" category, both devices are on the same level — 90/100.
Which is better: the Vivo iQOO 15 Ultra or the Vivo X300s?
Both devices scored 89/100. The choice depends on your priorities: if performance matters more — go with the Vivo iQOO 15 Ultra.
What is the rating of the Vivo iQOO 15 Ultra and the Vivo X300s?
The Vivo iQOO 15 Ultra has a MobileRank rating of 89/100, the Vivo X300s — 89/100.
Which has the better camera: the Vivo iQOO 15 Ultra or the Vivo X300s?
The Vivo X300s leads on camera score (94/100 vs 78/100).
Which is more powerful: the Vivo iQOO 15 Ultra or the Vivo X300s?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 94/100).
Should you choose the Vivo iQOO 15 Ultra over the Vivo X300s?
The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Vivo X300s is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.