Poco M8x vs Vivo iQOO 15 Ultra
The Poco M8x (2026) runs on the Qualcomm Snapdragon 4 Gen 5, while the Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5. By overall MobileRank rating, the Vivo iQOO 15 Ultra leads — 89/100 vs 45/100 (a 44-point difference). Key differences: the Vivo iQOO 15 Ultra has the bigger battery (7400 mAh vs 6000); the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 624,021).
Profile comparison
Category scores
Poco M8x
Vivo iQOO 15 Ultra
What makes Poco M8x better?
- Overall rating 45/100
What makes Vivo iQOO 15 Ultra better?
- Higher AnTuTu: 4602290 vs 624021
- Better Geekbench Single: 3639 vs 976
- Better Geekbench Multi: 11047 vs 2250
- Bigger battery: 7400 vs 6000 mAh
- Faster charging: 120W vs 33W
- Higher refresh rate: 144Hz vs 120Hz
- Higher performance (99/100 vs 49/100)
- Better camera (78/100 vs 30/100)
- Longer battery life (92/100 vs 53/100)
- Better display (99/100 vs 55/100)
Comparison verdict
Comparing the Poco M8x vs the Vivo iQOO 15 Ultra, the Vivo iQOO 15 Ultra scores 44 points higher (89/100 vs 45/100). In the "performance" category, the Vivo iQOO 15 Ultra leads (99/100 vs 49/100). 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 53/100). In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Poco M8x (99/100 vs 49/100). In the "display" category, the Vivo iQOO 15 Ultra significantly outperforms the Poco M8x (99/100 vs 55/100). In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Poco M8x (78/100 vs 30/100). In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Poco M8x (92/100 vs 53/100).
Specs comparison
| Specification | Poco M8x | Vivo iQOO 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 4 Gen 5 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 624021 | 4602290 | |
| Geekbench Single | 976 | 3639 | |
| Geekbench Multi | 2250 | 11047 | |
| Display | 6.9" IPS LCD | 6.8" LTPO AMOLED | |
| Resolution | 720x1600 | 1440x3168 | |
| Refresh rate | 120 Hz | 144 Hz | |
| Battery | 6000 mAh | 7400 mAh | |
| Charging | 33W | 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 | 4GB | 12GB / 16GB / 24GB | |
| Storage | 128GB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | — | 8000 nits | |
| NFC | yes | yes | |
| Protection | IP64 | IP68 | |
| Dimensions | — | 163.7×76.8×8.7 mm | |
| Weight | — | 227 g | |
| Launch price | — | $799 |
Camera comparison
Poco M8x
- Main: 50MP f/1.8
- Front: 8MP
Vivo iQOO 15 Ultra
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Poco M8x
- 6.9" IPS LCD
- Resolution: 720x1600
- Refresh rate: 120 Hz
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Battery and charging
Poco M8x
- 6000 mAh
- Wired: 33W
- No wireless charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Overall performance score
We compared Poco M8x and Vivo iQOO 15 Ultra, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads Poco M8x by 86.4% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Poco M8x
Price unknownDetailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Poco M8x (99/100 vs 49/100).
display
In the "display" category, the Vivo iQOO 15 Ultra significantly outperforms the Poco M8x (99/100 vs 55/100).
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Poco M8x (78/100 vs 30/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Poco M8x (92/100 vs 53/100).
Frequently asked questions
Which is better: the Poco M8x or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra significantly outperforms the Poco M8x by 44 points (89/100 vs 45/100).
What is the rating of the Poco M8x and the Vivo iQOO 15 Ultra?
The Poco M8x has a MobileRank rating of 45/100, the Vivo iQOO 15 Ultra — 89/100.
Which has the better camera: the Poco M8x 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 Poco M8x or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 49/100).
Should you choose the Poco M8x 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.