Vivo X300 Ultra vs Xiaomi 15T
The Vivo X300 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Xiaomi 15T (2025) runs on the MediaTek Dimensity 8400 Ultra; launch prices were $950 and $449. By overall MobileRank rating, the Vivo X300 Ultra leads — 91/100 vs 69/100 (a 22-point difference). Key differences: the Vivo X300 Ultra has the bigger battery (7000 mAh vs 5500); the main camera is 200 MP vs 50 MP; the Vivo X300 Ultra is faster in AnTuTu (4,247,433 vs 1,915,524); the Xiaomi 15T is noticeably lighter (194g vs 230g).
Profile comparison
Category scores
Vivo X300 Ultra
Xiaomi 15T
What makes Vivo X300 Ultra better?
- Higher AnTuTu: 4247433 vs 1915524
- Better Geekbench Single: 3639 vs 1579
- Better Geekbench Multi: 11047 vs 6100
- Bigger battery: 7000 vs 5500 mAh
- Faster charging: 100W vs 67W
- Better main camera: 200MP vs 50MP
- Higher performance (99/100 vs 76/100)
- Better camera (96/100 vs 59/100)
- Longer battery life (85/100 vs 59/100)
- Better display (89/100 vs 83/100)
What makes Xiaomi 15T better?
- Lighter: 194g vs 230g
- Cheaper at launch: $449 vs $950
- Better portability (67/100 vs 39/100)
Comparison verdict
Comparing the Vivo X300 Ultra vs the Xiaomi 15T, the Vivo X300 Ultra scores 22 points higher (91/100 vs 69/100). In the "performance" category, the Vivo X300 Ultra leads (99/100 vs 76/100). In the "camera" category, the Vivo X300 Ultra leads (96/100 vs 59/100). In the "battery" category, the Vivo X300 Ultra leads (85/100 vs 59/100). Value score: Vivo X300 Ultra — 94/100, Xiaomi 15T — 62/100; 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 X300 Ultra notably outperforms the Xiaomi 15T (99/100 vs 76/100). In the "display" category, the Vivo X300 Ultra is a bit better (89/100 vs 83/100). In the "camera" category, the Vivo X300 Ultra significantly outperforms the Xiaomi 15T (96/100 vs 59/100). In the "battery" category, the Vivo X300 Ultra notably outperforms the Xiaomi 15T (85/100 vs 59/100). In the "portability" category, the Xiaomi 15T notably outperforms the Vivo X300 Ultra (67/100 vs 39/100).
Specs comparison
| Specification | Vivo X300 Ultra | Xiaomi 15T | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | MediaTek Dimensity 8400 Ultra | |
| AnTuTu | 4247433 | 1915524 | |
| Geekbench Single | 3639 | 1579 | |
| Geekbench Multi | 11047 | 6100 | |
| Display | 6.8" LTPO OLED | 6.8" AMOLED | |
| Resolution | 3168x1440 | 2712x1220 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 7000 mAh | 5500 mAh | |
| Charging | 100W | 67W | |
| Wireless charging | 40W | 0W | |
| DXOMark (camera) | 170 | — | |
| Main camera | 200 MP | 50 MP | |
| Ultrawide | 50 MP | 12 MP | |
| Telephoto | 200 MP | 50 MP | |
| Front camera | 32 MP | 20 MP | |
| RAM | 12GB / 16GB | 12GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB | |
| OS | Android 16 | Android 15 | |
| Brightness (peak) | — | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP69 | IP68 | |
| Dimensions | 163.0×76.8×8.2 mm | 163.2×78.0×7.5 mm | |
| Weight | 230 g | 194 g | |
| Launch price | $950 | $449 |
Camera comparison
Vivo X300 Ultra
- Main: 200MP f/1.6
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
Xiaomi 15T
- Main: 50MP f/1.6
- Ultrawide: 12MP
- Telephoto: 50MP
- Front: 20MP
Display comparison
Vivo X300 Ultra
- 6.8" LTPO OLED
- Resolution: 3168x1440
- Refresh rate: 120 Hz
Xiaomi 15T
- 6.8" AMOLED
- Resolution: 2712x1220
- Refresh rate: 120 Hz
Battery and charging
Vivo X300 Ultra
- 7000 mAh
- NanoReview test: web browsing 10:18 hrs, total 29:11 hrs
- Wired: 100W
- Wireless: 40W
Xiaomi 15T
- 5500 mAh
- Wired: 67W
- No wireless charging
Overall performance score
We compared Vivo X300 Ultra and Xiaomi 15T, covering their specs and all relevant benchmarks.
Vivo X300 Ultra leads Xiaomi 15T by 121.7% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $501. Xiaomi 15T was $501 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo X300 Ultra notably outperforms the Xiaomi 15T (99/100 vs 76/100).
display
In the "display" category, the Vivo X300 Ultra is a bit better (89/100 vs 83/100).
camera
In the "camera" category, the Vivo X300 Ultra significantly outperforms the Xiaomi 15T (96/100 vs 59/100).
battery
In the "battery" category, the Vivo X300 Ultra notably outperforms the Xiaomi 15T (85/100 vs 59/100).
portability
In the "portability" category, the Xiaomi 15T notably outperforms the Vivo X300 Ultra (67/100 vs 39/100).
Frequently asked questions
Which is better: the Vivo X300 Ultra or the Xiaomi 15T?
The Vivo X300 Ultra significantly outperforms the Xiaomi 15T by 22 points (91/100 vs 69/100).
What is the rating of the Vivo X300 Ultra and the Xiaomi 15T?
The Vivo X300 Ultra has a MobileRank rating of 91/100, the Xiaomi 15T — 69/100.
Which has the better camera: the Vivo X300 Ultra or the Xiaomi 15T?
The Vivo X300 Ultra leads on camera score (96/100 vs 59/100).
Which is more powerful: the Vivo X300 Ultra or the Xiaomi 15T?
The Vivo X300 Ultra leads on performance (99/100 vs 76/100).
Should you choose the Vivo X300 Ultra over the Xiaomi 15T?
The Vivo X300 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers. The Xiaomi 15T is a better fit for active users.