Realme P3x vs Vivo X300 Ultra
The Realme P3x (2025) runs on the MediaTek Dimensity 6400, while the Vivo X300 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5. By overall MobileRank rating, the Vivo X300 Ultra leads — 91/100 vs 46/100 (a 45-point difference). Key differences: the Vivo X300 Ultra has the bigger battery (7000 mAh vs 6000); the main camera is 50 MP vs 200 MP; the Vivo X300 Ultra is faster in AnTuTu (4,247,433 vs 550,018); the Vivo X300 Ultra has NFC for contactless payments, the Realme P3x doesn't; the Realme P3x is noticeably lighter (197g vs 230g).
Realme P3x
Vivo X300 Ultra
- Lighter: 197g vs 230g
- Better portability (62/100 vs 39/100)
- Higher AnTuTu: 4247433 vs 550018
- Better Geekbench Single: 3640 vs 803
- Better Geekbench Multi: 11033 vs 2047
- Bigger battery: 7000 vs 6000 mAh
- Faster charging: 100W vs 45W
- Better main camera: 200MP vs 50MP
- Higher performance (99/100 vs 44/100)
- Better camera (96/100 vs 31/100)
- Longer battery life (85/100 vs 56/100)
- Better display (89/100 vs 66/100)
Comparing the Realme P3x vs the Vivo X300 Ultra, the Vivo X300 Ultra scores 45 points higher (91/100 vs 46/100). In the "performance" category, the Vivo X300 Ultra leads (99/100 vs 44/100). In the "camera" category, the Vivo X300 Ultra leads (96/100 vs 31/100). In the "battery" category, the Vivo X300 Ultra leads (85/100 vs 56/100). In the "performance" category, the Vivo X300 Ultra significantly outperforms the Realme P3x (99/100 vs 44/100). In the "display" category, the Vivo X300 Ultra notably outperforms the Realme P3x (89/100 vs 66/100). In the "camera" category, the Vivo X300 Ultra significantly outperforms the Realme P3x (96/100 vs 31/100). In the "battery" category, the Vivo X300 Ultra notably outperforms the Realme P3x (85/100 vs 56/100). In the "portability" category, the Realme P3x notably outperforms the Vivo X300 Ultra (62/100 vs 39/100).
| Specification | Realme P3x | Vivo X300 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 6400 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 550018 | 4247433 | |
| Geekbench Single | 803 | 3640 | |
| Geekbench Multi | 2047 | 11033 | |
| Display | 6.7" IPS LCD | 6.8" LTPO OLED | |
| Resolution | 1080x2400 | 3168x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 6000 mAh | 7000 mAh | |
| Charging | 45W | 100W | |
| Wireless charging | 0W | 40W | |
| DXOMark (camera) | — | 170 | |
| Main camera | 50 MP | 200 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 200 MP | |
| Front camera | — | 32 MP | |
| RAM | 6GB / 8GB | 12GB / 16GB | |
| Storage | 128GB | 256GB / 512GB / 1TB | |
| OS | Android 15, Realme UI 6.0 | Android 16 | |
| Brightness (peak) | 950 nits | — | |
| NFC | no | yes | |
| Protection | IP68 | IP69 | |
| Dimensions | 165.7×76.2×7.9 mm | 163.0×76.8×8.2 mm | |
| Weight | 197 g | 230 g | |
| Price | — | $10498 |
Realme P3x
- Main: 50MP f/f/1.8
- Front: —
Vivo X300 Ultra
- Main: 200MP f/f/1.6
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
Realme P3x
- 6.7" IPS LCD
- Resolution: 1080x2400
- Refresh rate: 120 Hz
Vivo X300 Ultra
- 6.8" LTPO OLED
- Resolution: 3168x1440
- Refresh rate: 120 Hz
Realme P3x
- 6000 mAh
- Wired: 45W
- No wireless charging
Vivo X300 Ultra
- 7000 mAh
- NanoReview test: web browsing 10:18 hrs, total 29:11 hrs
- Wired: 100W
- Wireless: 40W
We compared Realme P3x and Vivo X300 Ultra, covering their specs and all relevant benchmarks.
Vivo X300 Ultra leads Realme P3x by 87.1% in our overall performance rating.
Realme P3x
Price unknownperformance
In the "performance" category, the Vivo X300 Ultra significantly outperforms the Realme P3x (99/100 vs 44/100).
display
In the "display" category, the Vivo X300 Ultra notably outperforms the Realme P3x (89/100 vs 66/100).
camera
In the "camera" category, the Vivo X300 Ultra significantly outperforms the Realme P3x (96/100 vs 31/100).
battery
In the "battery" category, the Vivo X300 Ultra notably outperforms the Realme P3x (85/100 vs 56/100).
portability
In the "portability" category, the Realme P3x notably outperforms the Vivo X300 Ultra (62/100 vs 39/100).
Which is better: the Realme P3x or the Vivo X300 Ultra?
The Vivo X300 Ultra significantly outperforms the Realme P3x by 45 points (91/100 vs 46/100).
What is the rating of the Realme P3x and the Vivo X300 Ultra?
The Realme P3x has a MobileRank rating of 46/100, the Vivo X300 Ultra — 91/100.
Which has the better camera: the Realme P3x or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on camera score (96/100 vs 31/100).
Which is more powerful: the Realme P3x or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on performance (99/100 vs 44/100).
Should you choose the Realme P3x over the Vivo X300 Ultra?
The Realme P3x is a better fit for everyday use. 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.