Vivo iQOO 15T vs Vivo X300 Ultra
The Vivo iQOO 15T (2026) runs on the MediaTek Dimensity 9500, while the Vivo X300 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $499 and $950. By overall MobileRank rating, the Vivo X300 Ultra leads — 91/100 vs 82/100 (a 9-point difference). Key differences: the Vivo iQOO 15T has the bigger battery (8000 mAh vs 7000); the Vivo iQOO 15T is faster in AnTuTu (4,704,310 vs 4,247,433).
Profile comparison
Category scores
Vivo iQOO 15T
Vivo X300 Ultra
What makes Vivo iQOO 15T better?
- Higher AnTuTu: 4704310 vs 4247433
- Bigger battery: 8000 vs 7000 mAh
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 216g vs 230g
- Cheaper at launch: $499 vs $950
- Better display (99/100 vs 89/100)
- Better portability (44/100 vs 39/100)
What makes Vivo X300 Ultra better?
- Better Geekbench Single: 3639 vs 3293
- Better Geekbench Multi: 11047 vs 10243
- Higher performance (99/100 vs 97/100)
- Better camera (96/100 vs 65/100)
- Longer battery life (85/100 vs 75/100)
Comparison verdict
Comparing the Vivo iQOO 15T vs the Vivo X300 Ultra, the Vivo X300 Ultra scores 9 points higher (91/100 vs 82/100). In the "camera" category, the Vivo X300 Ultra leads (96/100 vs 65/100). In the "battery" category, the Vivo X300 Ultra leads (85/100 vs 75/100). Value score: Vivo iQOO 15T — 86/100, Vivo X300 Ultra — 94/100; 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 and the Vivo iQOO 15T are nearly equal (99/100 vs 97/100). In the "display" category, the Vivo iQOO 15T is a bit better (99/100 vs 89/100). In the "camera" category, the Vivo X300 Ultra significantly outperforms the Vivo iQOO 15T (96/100 vs 65/100). In the "battery" category, the Vivo X300 Ultra is a bit better (85/100 vs 75/100). In the "portability" category, the Vivo iQOO 15T is a bit better (44/100 vs 39/100).
Specs comparison
| Specification | Vivo iQOO 15T | Vivo X300 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 4704310 | 4247433 | |
| Geekbench Single | 3293 | 3639 | |
| Geekbench Multi | 10243 | 11047 | |
| Display | 6.8" LTPO AMOLED | 6.8" LTPO OLED | |
| Resolution | 1440x3168 | 3168x1440 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 8000 mAh | 7000 mAh | |
| Charging | 100W | 100W | |
| Wireless charging | 0W | 40W | |
| DXOMark (camera) | — | 170 | |
| Main camera | 200 MP | 200 MP | |
| Ultrawide | 50 MP | 50 MP | |
| Telephoto | 0 MP | 200 MP | |
| Front camera | 16 MP | 32 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 16 | |
| NFC | yes | yes | |
| Protection | IP68 | IP69 | |
| Dimensions | — | 163.0×76.8×8.2 mm | |
| Weight | 216 g | 230 g | |
| Launch price | $499 | $950 |
Camera comparison
Vivo iQOO 15T
- Main: 200MP f/1.8
- Ultrawide: 50MP
- Front: 16MP
Vivo X300 Ultra
- Main: 200MP f/1.6
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
Display comparison
Vivo iQOO 15T
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Vivo X300 Ultra
- 6.8" LTPO OLED
- Resolution: 3168x1440
- Refresh rate: 120 Hz
Battery and charging
Vivo iQOO 15T
- 8000 mAh
- Wired: 100W
- No wireless charging
Vivo X300 Ultra
- 7000 mAh
- NanoReview test: web browsing 10:18 hrs, total 29:11 hrs
- Wired: 100W
- Wireless: 40W
Overall performance score
We compared Vivo iQOO 15T and Vivo X300 Ultra, covering their specs and all relevant benchmarks.
Vivo iQOO 15T leads Vivo X300 Ultra by 10.8% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $451. Vivo iQOO 15T was $451 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo X300 Ultra and the Vivo iQOO 15T are nearly equal (99/100 vs 97/100).
display
In the "display" category, the Vivo iQOO 15T is a bit better (99/100 vs 89/100).
camera
In the "camera" category, the Vivo X300 Ultra significantly outperforms the Vivo iQOO 15T (96/100 vs 65/100).
battery
In the "battery" category, the Vivo X300 Ultra is a bit better (85/100 vs 75/100).
portability
In the "portability" category, the Vivo iQOO 15T is a bit better (44/100 vs 39/100).
Frequently asked questions
Which is better: the Vivo iQOO 15T or the Vivo X300 Ultra?
The Vivo X300 Ultra edges out the Vivo iQOO 15T by just 9 points — the two devices are very close in overall level.
What is the rating of the Vivo iQOO 15T and the Vivo X300 Ultra?
The Vivo iQOO 15T has a MobileRank rating of 82/100, the Vivo X300 Ultra — 91/100.
Which has the better camera: the Vivo iQOO 15T or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on camera score (96/100 vs 65/100).
Should you choose the Vivo iQOO 15T over the Vivo X300 Ultra?
The Vivo iQOO 15T is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. 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.