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; estimated prices are $599 and $950. By overall MobileRank rating, the Vivo X300 Ultra leads — 87/100 vs 77/100 (a 10-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 3,740,528); the Vivo iQOO 15 is noticeably lighter (215g vs 230g).
Vivo iQOO 15
Vivo X300 Ultra
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 215g vs 230g
- Cheaper: $599 vs $950
- Better design/ergonomics (31/100 vs 12/100)
- Better value for money (69/100 vs 44/100)
- Higher AnTuTu: 4247433 vs 3740528
- Better Geekbench Single: 3640 vs 3050
- Better Geekbench Multi: 11033 vs 9300
- Better main camera: 200MP vs 50MP
- Higher performance (96/100 vs 78/100)
- Better camera (96/100 vs 74/100)
Comparing the Vivo iQOO 15 vs the Vivo X300 Ultra, the Vivo X300 Ultra scores 10 points higher (87/100 vs 77/100). In the "performance" category, the Vivo X300 Ultra leads (96/100 vs 78/100). In the "camera" category, the Vivo X300 Ultra leads (96/100 vs 74/100). In the "value for money" category, the Vivo iQOO 15 leads (69/100 vs 44/100). In the "performance" category, the Vivo X300 Ultra notably outperforms the Vivo iQOO 15 (96/100 vs 78/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Vivo X300 Ultra notably outperforms the Vivo iQOO 15 (96/100 vs 74/100). In the "battery" category, both devices are on the same level — 77/100. In the "design" category, the Vivo iQOO 15 notably outperforms the Vivo X300 Ultra (31/100 vs 12/100). In the "value for money" category, the Vivo iQOO 15 notably outperforms the Vivo X300 Ultra (69/100 vs 44/100).
| Specification | Vivo iQOO 15 | Vivo X300 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 3740528 | 4247433 | |
| Geekbench Single | 3050 | 3640 | |
| Geekbench Multi | 9300 | 11033 | |
| 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 | |
| Price | $599 | $950 |
Vivo iQOO 15
- Main: 50MP f/f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Vivo X300 Ultra
- Main: 200MP f/f/1.6
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
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
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
We compared Vivo iQOO 15 and Vivo X300 Ultra, covering their specs and all relevant benchmarks.
Vivo X300 Ultra leads Vivo iQOO 15 by 11.9% in our overall performance rating.
Price difference: $351. Vivo iQOO 15 is cheaper by $351.
performance
In the "performance" category, the Vivo X300 Ultra notably outperforms the Vivo iQOO 15 (96/100 vs 78/100).
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, the Vivo X300 Ultra notably outperforms the Vivo iQOO 15 (96/100 vs 74/100).
battery
In the "battery" category, both devices are on the same level — 77/100.
design
In the "design" category, the Vivo iQOO 15 notably outperforms the Vivo X300 Ultra (31/100 vs 12/100).
value for money
In the "value for money" category, the Vivo iQOO 15 notably outperforms the Vivo X300 Ultra (69/100 vs 44/100).
Which is better: the Vivo iQOO 15 or the Vivo X300 Ultra?
The Vivo X300 Ultra is noticeably better than the Vivo iQOO 15 — the overall rating gap is 10 points.
What is the rating of the Vivo iQOO 15 and the Vivo X300 Ultra?
The Vivo iQOO 15 has a MobileRank rating of 77/100, the Vivo X300 Ultra — 87/100.
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 74/100).
Which is more powerful: the Vivo iQOO 15 or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on performance (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 active users, those who care about battery life. The Vivo X300 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life.