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; launch prices were $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).
Profile comparison
Category scores
Vivo iQOO 15 Ultra
Vivo X300s
What makes Vivo iQOO 15 Ultra better?
- Higher AnTuTu: 4602290 vs 3703823
- Better Geekbench Single: 3639 vs 3293
- Better Geekbench Multi: 11047 vs 10243
- Bigger battery: 7400 vs 7100 mAh
- Faster charging: 120W vs 90W
- Faster wireless charging: 50W vs 40W
- Higher performance (99/100 vs 95/100)
- Longer battery life (92/100 vs 83/100)
- Better display (99/100 vs 94/100)
What makes Vivo X300s better?
- Better main camera: 200MP vs 50MP
- Lighter: 217g vs 227g
- Cheaper at launch: $723 vs $799
- Better camera (94/100 vs 78/100)
- Better portability (42/100 vs 35/100)
Comparison verdict
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). Value score: Vivo iQOO 15 Ultra — 92/100, Vivo X300s — 92/100; 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 Vivo iQOO 15 Ultra and the Vivo X300s are nearly equal (99/100 vs 95/100). 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).
Specs comparison
| Specification | Vivo iQOO 15 Ultra | Vivo X300s | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | Dimensity 9500 | |
| AnTuTu | 4602290 | 3703823 | |
| Geekbench Single | 3639 | 3293 | |
| Geekbench Multi | 11047 | 10243 | |
| 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 | |
| Launch price | $799 | $723 |
Camera comparison
Vivo iQOO 15 Ultra
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Vivo X300s
- Main: 200MP f/1.7
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 50MP
Display comparison
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
Battery and charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Vivo X300s
- 7100 mAh
- Wired: 90W
- Wireless: 40W
Overall performance score
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.
Benchmarks
Launch prices and where to check today's
Launch price difference: $76. Vivo X300s was $76 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 Ultra and the Vivo X300s are nearly equal (99/100 vs 95/100).
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).
Frequently asked questions
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 (99/100 vs 95/100).
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).
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.