Realme P4x vs Xiaomi 15 Ultra
The Realme P4x (2025) runs on the MediaTek Dimensity 7400 Ultra, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $190 and $999. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 52/100 (a 33-point difference). Key differences: the Realme P4x has the bigger battery (7000 mAh vs 6000); the Xiaomi 15 Ultra is faster in AnTuTu (3,030,376 vs 876,129); the Xiaomi 15 Ultra has NFC for contactless payments, the Realme P4x doesn't; the Realme P4x is noticeably lighter (208g vs 225g).
Realme P4x
Xiaomi 15 Ultra
- Bigger battery: 7000 vs 6000 mAh
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 208g vs 225g
- Cheaper at launch: $190 vs $999
- Better portability (50/100 vs 29/100)
- Higher AnTuTu: 3030376 vs 876129
- Better Geekbench Single: 3050 vs 1050
- Better Geekbench Multi: 10200 vs 2939
- Faster charging: 90W vs 45W
- Higher performance (92/100 vs 56/100)
- Better camera (87/100 vs 30/100)
- Longer battery life (80/100 vs 60/100)
- Better display (90/100 vs 76/100)
Comparing the Realme P4x vs the Xiaomi 15 Ultra, the Xiaomi 15 Ultra scores 33 points higher (85/100 vs 52/100). In the "performance" category, the Xiaomi 15 Ultra leads (92/100 vs 56/100). In the "camera" category, the Xiaomi 15 Ultra leads (87/100 vs 30/100). In the "battery" category, the Xiaomi 15 Ultra leads (80/100 vs 60/100). Value score: Realme P4x — 70/100, Xiaomi 15 Ultra — 82/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Xiaomi 15 Ultra significantly outperforms the Realme P4x (92/100 vs 56/100). In the "display" category, the Xiaomi 15 Ultra is a bit better (90/100 vs 76/100). In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the Realme P4x (87/100 vs 30/100). In the "battery" category, the Xiaomi 15 Ultra notably outperforms the Realme P4x (80/100 vs 60/100). In the "portability" category, the Realme P4x notably outperforms the Xiaomi 15 Ultra (50/100 vs 29/100).
| Specification | Realme P4x | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 7400 Ultra | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 876129 | 3030376 | |
| Geekbench Single | 1050 | 3050 | |
| Geekbench Multi | 2939 | 10200 | |
| Display | 6.7" IPS LCD | 6.7" LTPO AMOLED | |
| Resolution | 1080x2400 | 3200x1440 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 7000 mAh | 6000 mAh | |
| Charging | 45W | 90W | |
| Wireless charging | 0W | 50W | |
| DXOMark (camera) | — | 159 | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 8 MP | 32 MP | |
| RAM | 6GB / 8GB | 16GB | |
| Storage | 128GB / 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 15, Realme UI 6.0 | Android 15 / HyperOS 2 | |
| Brightness (peak) | 1000 nits | 3200 nits | |
| NFC | no | yes | |
| Protection | IP64 | IP68 | |
| Dimensions | 165.9×76.0×8.4 mm | 161.3×75.3×9.4 mm | |
| Weight | 208 g | 225 g | |
| Launch price | $190 | $999 |
Realme P4x
- Main: 50MP f/f/1.8
- Front: 8MP
Xiaomi 15 Ultra
- Main: 50MP f/f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Realme P4x
- 6.7" IPS LCD
- Resolution: 1080x2400
- Refresh rate: 144 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Realme P4x
- 7000 mAh
- Wired: 45W
- No wireless charging
Xiaomi 15 Ultra
- 6000 mAh
- NanoReview test: web browsing 12:19 hrs, total 30:03 hrs
- Wired: 90W
- Wireless: 50W
We compared Realme P4x and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Xiaomi 15 Ultra leads Realme P4x by 71.1% in our overall performance rating.
Launch price difference: $809. Realme P4x was $809 cheaper at launch.
performance
In the "performance" category, the Xiaomi 15 Ultra significantly outperforms the Realme P4x (92/100 vs 56/100).
display
In the "display" category, the Xiaomi 15 Ultra is a bit better (90/100 vs 76/100).
camera
In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the Realme P4x (87/100 vs 30/100).
battery
In the "battery" category, the Xiaomi 15 Ultra notably outperforms the Realme P4x (80/100 vs 60/100).
portability
In the "portability" category, the Realme P4x notably outperforms the Xiaomi 15 Ultra (50/100 vs 29/100).
Which is better: the Realme P4x or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra significantly outperforms the Realme P4x by 33 points (85/100 vs 52/100).
What is the rating of the Realme P4x and the Xiaomi 15 Ultra?
The Realme P4x has a MobileRank rating of 52/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the Realme P4x or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 30/100).
Which is more powerful: the Realme P4x or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on performance (92/100 vs 56/100).
Should you choose the Realme P4x over the Xiaomi 15 Ultra?
The Realme P4x is a better fit for everyday use. The Xiaomi 15 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.