Realme 15 vs Vivo X300 Ultra
The Realme 15 (2025) runs on the MediaTek Dimensity 7300+, while the Vivo X300 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; estimated prices are $249 and $950. By overall MobileRank rating, the Vivo X300 Ultra leads — 91/100 vs 62/100 (a 29-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 877,641); the Realme 15 is noticeably lighter (185g vs 230g).
Realme 15
Vivo X300 Ultra
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 185g vs 230g
- Cheaper: $249 vs $950
- Better portability (74/100 vs 39/100)
- Higher AnTuTu: 4247433 vs 877641
- Better Geekbench Single: 3640 vs 1011
- Better Geekbench Multi: 11033 vs 2813
- Faster charging: 100W vs 80W
- Better main camera: 200MP vs 50MP
- Higher performance (99/100 vs 55/100)
- Better camera (96/100 vs 44/100)
- Longer battery life (85/100 vs 80/100)
- Better value for money (94/100 vs 78/100)
Comparing the Realme 15 vs the Vivo X300 Ultra, the Vivo X300 Ultra scores 29 points higher (91/100 vs 62/100). In the "performance" category, the Vivo X300 Ultra leads (99/100 vs 55/100). In the "camera" category, the Vivo X300 Ultra leads (96/100 vs 44/100). In the "value for money" category, the Vivo X300 Ultra leads (94/100 vs 78/100). In the "performance" category, the Vivo X300 Ultra significantly outperforms the Realme 15 (99/100 vs 55/100). In the "display" category, both devices are on the same level — 89/100. In the "camera" category, the Vivo X300 Ultra significantly outperforms the Realme 15 (96/100 vs 44/100). In the "battery" category, the Vivo X300 Ultra is a bit better (85/100 vs 80/100). In the "portability" category, the Realme 15 significantly outperforms the Vivo X300 Ultra (74/100 vs 39/100). In the "value for money" category, the Vivo X300 Ultra notably outperforms the Realme 15 (94/100 vs 78/100).
| Specification | Realme 15 | Vivo X300 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 7300+ | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 877641 | 4247433 | |
| Geekbench Single | 1011 | 3640 | |
| Geekbench Multi | 2813 | 11033 | |
| Display | 6.8" AMOLED | 6.8" LTPO OLED | |
| Resolution | 2392x1080 | 3168x1440 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 7000 mAh | 7000 mAh | |
| Charging | 80W | 100W | |
| Wireless charging | — | 40W | |
| DXOMark (camera) | — | 170 | |
| Main camera | 50 MP | 200 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 200 MP | |
| Front camera | 50 MP | 32 MP | |
| RAM | 12GB | 12GB / 16GB | |
| Storage | 256GB | 256GB / 512GB / 1TB | |
| OS | Android 15 | Android 16 | |
| NFC | — | yes | |
| Protection | — | IP69 | |
| Dimensions | — | 163.0×76.8×8.2 mm | |
| Weight | 185 g | 230 g | |
| Price | $249 | $950 |
Realme 15
- Main: 50MP f/f/1.8
- Ultrawide: 8MP
- Front: 50MP
Vivo X300 Ultra
- Main: 200MP f/f/1.6
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
Realme 15
- 6.8" AMOLED
- Resolution: 2392x1080
- Refresh rate: 144 Hz
Vivo X300 Ultra
- 6.8" LTPO OLED
- Resolution: 3168x1440
- Refresh rate: 120 Hz
Realme 15
- 7000 mAh
- Wired: 80W
- Wireless charging: no data
Vivo X300 Ultra
- 7000 mAh
- NanoReview test: web browsing 10:18 hrs, total 29:11 hrs
- Wired: 100W
- Wireless: 40W
We compared Realme 15 and Vivo X300 Ultra, covering their specs and all relevant benchmarks.
Vivo X300 Ultra leads Realme 15 by 79.3% in our overall performance rating.
Price difference: $701. Realme 15 is cheaper by $701.
performance
In the "performance" category, the Vivo X300 Ultra significantly outperforms the Realme 15 (99/100 vs 55/100).
display
In the "display" category, both devices are on the same level — 89/100.
camera
In the "camera" category, the Vivo X300 Ultra significantly outperforms the Realme 15 (96/100 vs 44/100).
battery
In the "battery" category, the Vivo X300 Ultra is a bit better (85/100 vs 80/100).
portability
In the "portability" category, the Realme 15 significantly outperforms the Vivo X300 Ultra (74/100 vs 39/100).
value for money
In the "value for money" category, the Vivo X300 Ultra notably outperforms the Realme 15 (94/100 vs 78/100).
Which is better: the Realme 15 or the Vivo X300 Ultra?
The Vivo X300 Ultra significantly outperforms the Realme 15 by 29 points (91/100 vs 62/100).
What is the rating of the Realme 15 and the Vivo X300 Ultra?
The Realme 15 has a MobileRank rating of 62/100, the Vivo X300 Ultra — 91/100.
Which has the better camera: the Realme 15 or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on camera score (96/100 vs 44/100).
Which is more powerful: the Realme 15 or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on performance (99/100 vs 55/100).
Should you choose the Realme 15 over the Vivo X300 Ultra?
The Realme 15 is a better fit for 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.