Realme P4x vs Vivo iQOO 15 Ultra
The Realme P4x (2025) runs on the MediaTek Dimensity 7400 Ultra, while the Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $190 and $799. By overall MobileRank rating, the Vivo iQOO 15 Ultra leads — 89/100 vs 52/100 (a 37-point difference). Key differences: the Vivo iQOO 15 Ultra has the bigger battery (7400 mAh vs 7000); the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 876,440); the Vivo iQOO 15 Ultra has NFC for contactless payments, the Realme P4x doesn't; the Realme P4x is noticeably lighter (208g vs 227g).
Profile comparison
Category scores
Realme P4x
Vivo iQOO 15 Ultra
What makes Realme P4x better?
- Lighter: 208g vs 227g
- Cheaper at launch: $190 vs $799
- Better portability (50/100 vs 35/100)
What makes Vivo iQOO 15 Ultra better?
- Higher AnTuTu: 4602290 vs 876440
- Better Geekbench Single: 3639 vs 1050
- Better Geekbench Multi: 11047 vs 2939
- Bigger battery: 7400 vs 7000 mAh
- Faster charging: 120W vs 45W
- Higher performance (99/100 vs 56/100)
- Better camera (78/100 vs 30/100)
- Longer battery life (92/100 vs 60/100)
- Better display (99/100 vs 76/100)
Comparison verdict
Comparing the Realme P4x vs the Vivo iQOO 15 Ultra, the Vivo iQOO 15 Ultra scores 37 points higher (89/100 vs 52/100). In the "performance" category, the Vivo iQOO 15 Ultra leads (99/100 vs 56/100). In the "camera" category, the Vivo iQOO 15 Ultra leads (78/100 vs 30/100). In the "battery" category, the Vivo iQOO 15 Ultra leads (92/100 vs 60/100). Value score: Realme P4x — 68/100, Vivo iQOO 15 Ultra — 92/100; it shows how far a model sits above or below the usual level for its price, and is not part of the overall rating. In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Realme P4x (99/100 vs 56/100). In the "display" category, the Vivo iQOO 15 Ultra notably outperforms the Realme P4x (99/100 vs 76/100). In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Realme P4x (78/100 vs 30/100). In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Realme P4x (92/100 vs 60/100). In the "portability" category, the Realme P4x notably outperforms the Vivo iQOO 15 Ultra (50/100 vs 35/100).
Specs comparison
| Specification | Realme P4x | Vivo iQOO 15 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 7400 Ultra | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 876440 | 4602290 | |
| Geekbench Single | 1050 | 3639 | |
| Geekbench Multi | 2939 | 11047 | |
| Display | 6.7" IPS LCD | 6.8" LTPO AMOLED | |
| Resolution | 1080x2400 | 1440x3168 | |
| Refresh rate | 144 Hz | 144 Hz | |
| Battery | 7000 mAh | 7400 mAh | |
| Charging | 45W | 120W | |
| Wireless charging | 0W | 50W | |
| 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 | 12GB / 16GB / 24GB | |
| Storage | 128GB / 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 15, Realme UI 6.0 | Android 16 | |
| Brightness (peak) | 1000 nits | 8000 nits | |
| NFC | no | yes | |
| Protection | IP64 | IP68 | |
| Dimensions | 165.9×76.0×8.4 mm | 163.7×76.8×8.7 mm | |
| Weight | 208 g | 227 g | |
| Launch price | $190 | $799 |
Camera comparison
Realme P4x
- Main: 50MP f/1.8
- Front: 8MP
Vivo iQOO 15 Ultra
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Realme P4x
- 6.7" IPS LCD
- Resolution: 1080x2400
- Refresh rate: 144 Hz
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Battery and charging
Realme P4x
- 7000 mAh
- Wired: 45W
- No wireless charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Overall performance score
We compared Realme P4x and Vivo iQOO 15 Ultra, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads Realme P4x by 81.0% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $609. Realme P4x was $609 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Realme P4x (99/100 vs 56/100).
display
In the "display" category, the Vivo iQOO 15 Ultra notably outperforms the Realme P4x (99/100 vs 76/100).
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Realme P4x (78/100 vs 30/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Realme P4x (92/100 vs 60/100).
portability
In the "portability" category, the Realme P4x notably outperforms the Vivo iQOO 15 Ultra (50/100 vs 35/100).
Frequently asked questions
Which is better: the Realme P4x or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra significantly outperforms the Realme P4x by 37 points (89/100 vs 52/100).
What is the rating of the Realme P4x and the Vivo iQOO 15 Ultra?
The Realme P4x has a MobileRank rating of 52/100, the Vivo iQOO 15 Ultra — 89/100.
Which has the better camera: the Realme P4x or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on camera score (78/100 vs 30/100).
Which is more powerful: the Realme P4x or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 56/100).
Should you choose the Realme P4x over the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.