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; estimated prices are $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).
Vivo X300s
Xiaomi 15 Ultra
- Higher AnTuTu: 3703823 vs 3030376
- Better Geekbench Single: 3228 vs 3050
- Bigger battery: 7100 vs 6000 mAh
- Better main camera: 200MP vs 50MP
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 217g vs 225g
- Cheaper: $723 vs $999
- Higher performance (94/100 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)
- Better value for money (90/100 vs 82/100)
- Better Geekbench Multi: 10200 vs 9553
- Faster wireless charging: 50W vs 40W
- Overall rating 85/100
Comparing the Vivo X300s vs the Xiaomi 15 Ultra, the Vivo X300s scores 4 points higher (89/100 vs 85/100). In the "performance" category, the Vivo X300s and the Xiaomi 15 Ultra are nearly equal (94/100 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). In the "value for money" category, the Vivo X300s is a bit better (90/100 vs 82/100).
| Specification | Vivo X300s | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | Dimensity 9500 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3703823 | 3030376 | |
| Geekbench Single | 3228 | 3050 | |
| Geekbench Multi | 9553 | 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 | |
| Price | $723 | $999 |
Vivo X300s
- Main: 200MP f/f/1.7
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 50MP
Xiaomi 15 Ultra
- Main: 50MP f/f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
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
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
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.
Price difference: $276. Vivo X300s is cheaper by $276.
performance
In the "performance" category, the Vivo X300s and the Xiaomi 15 Ultra are nearly equal (94/100 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).
value for money
In the "value for money" category, the Vivo X300s is a bit better (90/100 vs 82/100).
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.