Vivo iQOO 15 vs Vivo X300 Ultra
The Vivo iQOO 15 (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Vivo X300 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $599 and $950. By overall MobileRank rating, the Vivo X300 Ultra leads — 91/100 vs 86/100 (a 5-point difference). Key differences: the main camera is 50 MP vs 200 MP; the Vivo X300 Ultra is faster in AnTuTu (4,247,433 vs 3,758,268); the Vivo iQOO 15 is noticeably lighter (215g vs 230g).
Profile comparison
Category scores
Vivo iQOO 15
Vivo X300 Ultra
What makes Vivo iQOO 15 better?
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 215g vs 230g
- Cheaper at launch: $599 vs $950
- Better display (99/100 vs 89/100)
- Better portability (48/100 vs 39/100)
What makes Vivo X300 Ultra better?
- Higher AnTuTu: 4247433 vs 3758268
- Better Geekbench Single: 3639 vs 3013
- Better Geekbench Multi: 11047 vs 9287
- Better main camera: 200MP vs 50MP
- Higher performance (99/100 vs 94/100)
- Better camera (96/100 vs 78/100)
Comparison verdict
Comparing the Vivo iQOO 15 vs the Vivo X300 Ultra, the Vivo X300 Ultra scores 5 points higher (91/100 vs 86/100). In the "camera" category, the Vivo X300 Ultra leads (96/100 vs 78/100). Value score: Vivo iQOO 15 — 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 is a bit better (99/100 vs 94/100). In the "display" category, the Vivo iQOO 15 is a bit better (99/100 vs 89/100). In the "camera" category, the Vivo X300 Ultra notably outperforms the Vivo iQOO 15 (96/100 vs 78/100). In the "battery" category, both devices are on the same level — 85/100. In the "portability" category, the Vivo iQOO 15 is a bit better (48/100 vs 39/100).
Specs comparison
| Specification | Vivo iQOO 15 | Vivo X300 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 3758268 | 4247433 | |
| Geekbench Single | 3013 | 3639 | |
| Geekbench Multi | 9287 | 11047 | |
| Display | 6.8" LTPO AMOLED | 6.8" LTPO OLED | |
| Resolution | 1440x3168 | 3168x1440 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 7000 mAh | 7000 mAh | |
| Charging | 100W | 100W | |
| Wireless charging | 40W | 40W | |
| DXOMark (camera) | — | 170 | |
| Main camera | 50 MP | 200 MP | |
| Ultrawide | 50 MP | 50 MP | |
| Telephoto | 50 MP | 200 MP | |
| Front camera | 32 MP | 32 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 6000 nits | — | |
| NFC | yes | yes | |
| Protection | IP68 | IP69 | |
| Dimensions | 163.7×76.8×8.1 mm | 163.0×76.8×8.2 mm | |
| Weight | 215 g | 230 g | |
| Launch price | $599 | $950 |
Camera comparison
Vivo iQOO 15
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Vivo X300 Ultra
- Main: 200MP f/1.6
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
Display comparison
Vivo iQOO 15
- 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 15
- 7000 mAh
- NanoReview test: web browsing 18:52 hrs, total 39:26 hrs
- Wired: 100W
- Wireless: 40W
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 15 and Vivo X300 Ultra, covering their specs and all relevant benchmarks.
Vivo X300 Ultra leads Vivo iQOO 15 by 11.5% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $351. Vivo iQOO 15 was $351 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo X300 Ultra is a bit better (99/100 vs 94/100).
display
In the "display" category, the Vivo iQOO 15 is a bit better (99/100 vs 89/100).
camera
In the "camera" category, the Vivo X300 Ultra notably outperforms the Vivo iQOO 15 (96/100 vs 78/100).
battery
In the "battery" category, both devices are on the same level — 85/100.
portability
In the "portability" category, the Vivo iQOO 15 is a bit better (48/100 vs 39/100).
Frequently asked questions
Which is better: the Vivo iQOO 15 or the Vivo X300 Ultra?
The Vivo X300 Ultra edges out the Vivo iQOO 15 by just 5 points — the two devices are very close in overall level.
What is the rating of the Vivo iQOO 15 and the Vivo X300 Ultra?
The Vivo iQOO 15 has a MobileRank rating of 86/100, the Vivo X300 Ultra — 91/100.
Which has the better camera: the Vivo iQOO 15 or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on camera score (96/100 vs 78/100).
Which is more powerful: the Vivo iQOO 15 or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on performance (99/100 vs 94/100).
Should you choose the Vivo iQOO 15 over the Vivo X300 Ultra?
The Vivo iQOO 15 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.