Vivo iQOO 15 Ultra vs Vivo X300 Pro
The Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Vivo X300 Pro (2025) runs on the Dimensity 9500; estimated prices are $799 and $899. By overall MobileRank rating, the Vivo iQOO 15 Ultra leads — 89/100 vs 87/100 (a 2-point difference). Key differences: the Vivo iQOO 15 Ultra has the bigger battery (7400 mAh vs 6510); the main camera is 50 MP vs 200 MP; the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 3,269,794).
Vivo iQOO 15 Ultra
Vivo X300 Pro
- Higher AnTuTu: 4602290 vs 3269794
- Better Geekbench Single: 3640 vs 3228
- Better Geekbench Multi: 11033 vs 9553
- Bigger battery: 7400 vs 6510 mAh
- Faster charging: 120W vs 90W
- Higher refresh rate: 144Hz vs 120Hz
- Faster wireless charging: 50W vs 40W
- Cheaper: $799 vs $899
- Higher performance (99/100 vs 93/100)
- Longer battery life (92/100 vs 81/100)
- Better display (99/100 vs 84/100)
- Better value for money (90/100 vs 86/100)
- Better main camera: 200MP vs 50MP
- Lighter: 226g vs 227g
- Better camera (96/100 vs 78/100)
- Better portability (43/100 vs 35/100)
Comparing the Vivo iQOO 15 Ultra vs the Vivo X300 Pro, the Vivo iQOO 15 Ultra scores 2 points higher (89/100 vs 87/100). In the "camera" category, the Vivo X300 Pro leads (96/100 vs 78/100). In the "battery" category, the Vivo iQOO 15 Ultra leads (92/100 vs 81/100). In the "performance" category, the Vivo iQOO 15 Ultra is a bit better (99/100 vs 93/100). In the "display" category, the Vivo iQOO 15 Ultra notably outperforms the Vivo X300 Pro (99/100 vs 84/100). In the "camera" category, the Vivo X300 Pro notably outperforms the Vivo iQOO 15 Ultra (96/100 vs 78/100). In the "battery" category, the Vivo iQOO 15 Ultra is a bit better (92/100 vs 81/100). In the "portability" category, the Vivo X300 Pro is a bit better (43/100 vs 35/100). In the "value for money" category, the Vivo iQOO 15 Ultra and the Vivo X300 Pro are nearly equal (90/100 vs 86/100).
| Specification | Vivo iQOO 15 Ultra | Vivo X300 Pro | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | Dimensity 9500 | |
| AnTuTu | 4602290 | 3269794 | |
| Geekbench Single | 3640 | 3228 | |
| Geekbench Multi | 11033 | 9553 | |
| Display | 6.8" LTPO AMOLED | 6.8" AMOLED | |
| Resolution | 1440x3168 | 1260x2800 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 7400 mAh | 6510 mAh | |
| Charging | 120W | 90W | |
| Wireless charging | 50W | 40W | |
| DXOMark (camera) | — | 171 | |
| Main camera | 50 MP | 200 MP | |
| Ultrawide | 50 MP | 50 MP | |
| Telephoto | 50 MP | 50 MP | |
| Front camera | 32 MP | 32 MP | |
| RAM | 12GB / 16GB / 24GB | 12GB / 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 8000 nits | 4500 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 163.7×76.8×8.7 mm | 161.2×75.5×8.0 mm | |
| Weight | 227 g | 226 g | |
| Price | $799 | $899 |
Vivo iQOO 15 Ultra
- Main: 50MP f/f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Vivo X300 Pro
- Main: 200MP f/f/1.57
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Vivo X300 Pro
- 6.8" AMOLED
- Resolution: 1260x2800
- Refresh rate: 120 Hz
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Vivo X300 Pro
- 6510 mAh
- NanoReview test: web browsing 13:30 hrs, total 24:37 hrs
- Wired: 90W
- Wireless: 40W
We compared Vivo iQOO 15 Ultra and Vivo X300 Pro, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads Vivo X300 Pro by 40.8% in our overall performance rating.
Price difference: $100. Vivo iQOO 15 Ultra is cheaper by $100.
performance
In the "performance" category, the Vivo iQOO 15 Ultra is a bit better (99/100 vs 93/100).
display
In the "display" category, the Vivo iQOO 15 Ultra notably outperforms the Vivo X300 Pro (99/100 vs 84/100).
camera
In the "camera" category, the Vivo X300 Pro notably outperforms the Vivo iQOO 15 Ultra (96/100 vs 78/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra is a bit better (92/100 vs 81/100).
portability
In the "portability" category, the Vivo X300 Pro is a bit better (43/100 vs 35/100).
value for money
In the "value for money" category, the Vivo iQOO 15 Ultra and the Vivo X300 Pro are nearly equal (90/100 vs 86/100).
Which is better: the Vivo iQOO 15 Ultra or the Vivo X300 Pro?
The Vivo iQOO 15 Ultra edges out the Vivo X300 Pro by just 2 points — the two devices are very close in overall level.
What is the rating of the Vivo iQOO 15 Ultra and the Vivo X300 Pro?
The Vivo iQOO 15 Ultra has a MobileRank rating of 89/100, the Vivo X300 Pro — 87/100.
Which has the better camera: the Vivo iQOO 15 Ultra or the Vivo X300 Pro?
The Vivo X300 Pro leads on camera score (96/100 vs 78/100).
Which is more powerful: the Vivo iQOO 15 Ultra or the Vivo X300 Pro?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 93/100).
Should you choose the Vivo iQOO 15 Ultra over the Vivo X300 Pro?
The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Vivo X300 Pro is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.