Vivo X300s vs Xiaomi 15 Ultra
The Vivo X300s (2026) runs on the Dimensity 9500, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $723 and $999. By overall MobileRank rating, the Vivo X300s leads — 89/100 vs 85/100 (a 4-point difference). Key differences: the Vivo X300s has the bigger battery (7100 mAh vs 6000); the main camera is 200 MP vs 50 MP; the Vivo X300s is faster in AnTuTu (3,703,823 vs 3,030,376).
Profile comparison
Category scores
Vivo X300s
Xiaomi 15 Ultra
What makes Vivo X300s better?
- Higher AnTuTu: 3703823 vs 3030376
- Better Geekbench Single: 3293 vs 3050
- Better Geekbench Multi: 10243 vs 10200
- Bigger battery: 7100 vs 6000 mAh
- Better main camera: 200MP vs 50MP
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 217g vs 225g
- Cheaper at launch: $723 vs $999
- Higher performance (95/100 vs 92/100)
- Better camera (94/100 vs 87/100)
- Longer battery life (83/100 vs 80/100)
- Better display (94/100 vs 90/100)
- Better portability (42/100 vs 29/100)
What makes Xiaomi 15 Ultra better?
- Faster wireless charging: 50W vs 40W
- Overall rating 85/100
Comparison verdict
Comparing the Vivo X300s vs the Xiaomi 15 Ultra, the Vivo X300s scores 4 points higher (89/100 vs 85/100). Value score: Vivo X300s — 92/100, Xiaomi 15 Ultra — 80/100; 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 X300s and the Xiaomi 15 Ultra are nearly equal (95/100 vs 92/100). In the "display" category, the Vivo X300s and the Xiaomi 15 Ultra are nearly equal (94/100 vs 90/100). In the "camera" category, the Vivo X300s is a bit better (94/100 vs 87/100). In the "battery" category, the Vivo X300s and the Xiaomi 15 Ultra are nearly equal (83/100 vs 80/100). In the "portability" category, the Vivo X300s is a bit better (42/100 vs 29/100).
Specs comparison
| Specification | Vivo X300s | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | Dimensity 9500 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3703823 | 3030376 | |
| Geekbench Single | 3293 | 3050 | |
| Geekbench Multi | 10243 | 10200 | |
| Display | 6.8" LTPO AMOLED | 6.7" LTPO AMOLED | |
| Resolution | 2800x1260 | 3200x1440 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 7100 mAh | 6000 mAh | |
| Charging | 90W | 90W | |
| Wireless charging | 40W | 50W | |
| DXOMark (camera) | — | 159 | |
| Main camera | 200 MP | 50 MP | |
| Ultrawide | 50 MP | 50 MP | |
| Telephoto | 50 MP | 50 MP | |
| Front camera | 50 MP | 32 MP | |
| RAM | 12GB / 16GB | 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 16 / OriginOS 6 | Android 15 / HyperOS 2 | |
| Brightness (peak) | — | 3200 nits | |
| NFC | — | yes | |
| Protection | — | IP68 | |
| Dimensions | — | 161.3×75.3×9.4 mm | |
| Weight | 217 g | 225 g | |
| Launch price | $723 | $999 |
Camera comparison
Vivo X300s
- Main: 200MP f/1.7
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 50MP
Xiaomi 15 Ultra
- Main: 50MP f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Vivo X300s
- 6.8" LTPO AMOLED
- Resolution: 2800x1260
- Refresh rate: 144 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Battery and charging
Vivo X300s
- 7100 mAh
- Wired: 90W
- Wireless: 40W
Xiaomi 15 Ultra
- 6000 mAh
- NanoReview test: web browsing 12:19 hrs, total 30:03 hrs
- Wired: 90W
- Wireless: 50W
Overall performance score
We compared Vivo X300s and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Vivo X300s leads Xiaomi 15 Ultra by 22.2% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $276. Vivo X300s was $276 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo X300s and the Xiaomi 15 Ultra are nearly equal (95/100 vs 92/100).
display
In the "display" category, the Vivo X300s and the Xiaomi 15 Ultra are nearly equal (94/100 vs 90/100).
camera
In the "camera" category, the Vivo X300s is a bit better (94/100 vs 87/100).
battery
In the "battery" category, the Vivo X300s and the Xiaomi 15 Ultra are nearly equal (83/100 vs 80/100).
portability
In the "portability" category, the Vivo X300s is a bit better (42/100 vs 29/100).
Frequently asked questions
Which is better: the Vivo X300s or the Xiaomi 15 Ultra?
The Vivo X300s edges out the Xiaomi 15 Ultra by just 4 points — the two devices are very close in overall level.
What is the rating of the Vivo X300s and the Xiaomi 15 Ultra?
The Vivo X300s has a MobileRank rating of 89/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the Vivo X300s or the Xiaomi 15 Ultra?
The Vivo X300s leads on camera score (94/100 vs 87/100).
Should you choose the Vivo X300s over the Xiaomi 15 Ultra?
The Vivo X300s is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers. The Xiaomi 15 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.