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; estimated prices are $499 and $950. By overall MobileRank rating, the Vivo X300 Ultra leads — 87/100 vs 75/100 (a 12-point difference). Key differences: the Vivo iQOO 15T has the bigger battery (8000 mAh vs 7000); the Vivo X300 Ultra is faster in AnTuTu (4,247,433 vs 3,815,522).
Vivo iQOO 15T
Vivo X300 Ultra
- Bigger battery: 8000 vs 7000 mAh
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 216g vs 230g
- Cheaper: $499 vs $950
- Better design/ergonomics (30/100 vs 12/100)
- Better value for money (75/100 vs 44/100)
- Higher AnTuTu: 4247433 vs 3815522
- Better Geekbench Single: 3640 vs 3228
- Better Geekbench Multi: 11033 vs 9553
- Higher performance (96/100 vs 82/100)
- Better camera (96/100 vs 63/100)
- Longer battery life (77/100 vs 74/100)
Comparing the Vivo iQOO 15T vs the Vivo X300 Ultra, the Vivo X300 Ultra scores 12 points higher (87/100 vs 75/100). In the "performance" category, the Vivo X300 Ultra leads (96/100 vs 82/100). In the "camera" category, the Vivo X300 Ultra leads (96/100 vs 63/100). In the "value for money" category, the Vivo iQOO 15T leads (75/100 vs 44/100). In the "performance" category, the Vivo X300 Ultra is a bit better (96/100 vs 82/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Vivo X300 Ultra significantly outperforms the Vivo iQOO 15T (96/100 vs 63/100). In the "battery" category, the Vivo X300 Ultra and the Vivo iQOO 15T are nearly equal (77/100 vs 74/100). In the "design" category, the Vivo iQOO 15T notably outperforms the Vivo X300 Ultra (30/100 vs 12/100). In the "value for money" category, the Vivo iQOO 15T significantly outperforms the Vivo X300 Ultra (75/100 vs 44/100).
| Specification | Vivo iQOO 15T | Vivo X300 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 3815522 | 4247433 | |
| Geekbench Single | 3228 | 3640 | |
| Geekbench Multi | 9553 | 11033 | |
| 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 | |
| Price | $499 | $950 |
Vivo iQOO 15T
- Main: 200MP f/f/1.8
- Ultrawide: 50MP
- Front: 16MP
Vivo X300 Ultra
- Main: 200MP f/f/1.6
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
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
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
We compared Vivo iQOO 15T and Vivo X300 Ultra, covering their specs and all relevant benchmarks.
Vivo X300 Ultra leads Vivo iQOO 15T by 10.2% in our overall performance rating.
Price difference: $451. Vivo iQOO 15T is cheaper by $451.
performance
In the "performance" category, the Vivo X300 Ultra is a bit better (96/100 vs 82/100).
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, the Vivo X300 Ultra significantly outperforms the Vivo iQOO 15T (96/100 vs 63/100).
battery
In the "battery" category, the Vivo X300 Ultra and the Vivo iQOO 15T are nearly equal (77/100 vs 74/100).
design
In the "design" category, the Vivo iQOO 15T notably outperforms the Vivo X300 Ultra (30/100 vs 12/100).
value for money
In the "value for money" category, the Vivo iQOO 15T significantly outperforms the Vivo X300 Ultra (75/100 vs 44/100).
Which is better: the Vivo iQOO 15T or the Vivo X300 Ultra?
The Vivo X300 Ultra is noticeably better than the Vivo iQOO 15T — the overall rating gap is 12 points.
What is the rating of the Vivo iQOO 15T and the Vivo X300 Ultra?
The Vivo iQOO 15T has a MobileRank rating of 75/100, the Vivo X300 Ultra — 87/100.
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 63/100).
Which is more powerful: the Vivo iQOO 15T or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on performance (96/100 vs 82/100).
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, 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.