Vivo iQOO 15 vs Vivo X300 Ultra
The Vivo iQOO 15 (2025) runs on the Qualcomm Snapdragon 8 Elite Gen 5, 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 88/100 (a 3-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 3,950,082); 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 3950082
- Better main camera: 200MP vs 50MP
- Higher performance (99/100 vs 98/100)
- Better camera (96/100 vs 78/100)
Comparison verdict
Comparing the Vivo iQOO 15 vs the Vivo X300 Ultra, the Vivo X300 Ultra scores 3 points higher (91/100 vs 88/100). In the "camera" category, the Vivo X300 Ultra leads (96/100 vs 78/100). Value score: Vivo iQOO 15 — 90/100, 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 15 are nearly equal (99/100 vs 98/100). 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 Gen 5 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 3950082 | 4247433 | |
| Geekbench Single | 3639 | 3639 | |
| Geekbench Multi | 11047 | 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 7.0% 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 and the Vivo iQOO 15 are nearly equal (99/100 vs 98/100).
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 3 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 88/100, 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).
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.