Poco X8s vs Vivo iQOO 15 Ultra
The Poco X8s (2026) runs on the Qualcomm Snapdragon 7 Gen 4, while the Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $437 and $799. By overall MobileRank rating, the Vivo iQOO 15 Ultra leads — 89/100 vs 67/100 (a 22-point difference). Key differences: the Vivo iQOO 15 Ultra has the bigger battery (7400 mAh vs 6330); the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 1,464,882); the Poco X8s is noticeably lighter (187g vs 227g).
Profile comparison
Category scores
Poco X8s
Vivo iQOO 15 Ultra
What makes Poco X8s better?
- Lighter: 187g vs 227g
- Cheaper at launch: $437 vs $799
- Better portability (65/100 vs 35/100)
What makes Vivo iQOO 15 Ultra better?
- Higher AnTuTu: 4602290 vs 1464882
- Better Geekbench Single: 3639 vs 1270
- Better Geekbench Multi: 11047 vs 4106
- Bigger battery: 7400 vs 6330 mAh
- Faster charging: 120W vs 100W
- Higher refresh rate: 144Hz vs 120Hz
- Higher performance (99/100 vs 67/100)
- Better camera (78/100 vs 58/100)
- Longer battery life (92/100 vs 69/100)
- Better display (99/100 vs 85/100)
Comparison verdict
Comparing the Poco X8s vs the Vivo iQOO 15 Ultra, the Vivo iQOO 15 Ultra scores 22 points higher (89/100 vs 67/100). In the "performance" category, the Vivo iQOO 15 Ultra leads (99/100 vs 67/100). In the "camera" category, the Vivo iQOO 15 Ultra leads (78/100 vs 58/100). In the "battery" category, the Vivo iQOO 15 Ultra leads (92/100 vs 69/100). Value score: Poco X8s — 60/100, 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 Poco X8s (99/100 vs 67/100). In the "display" category, the Vivo iQOO 15 Ultra is a bit better (99/100 vs 85/100). In the "camera" category, the Vivo iQOO 15 Ultra notably outperforms the Poco X8s (78/100 vs 58/100). In the "battery" category, the Vivo iQOO 15 Ultra notably outperforms the Poco X8s (92/100 vs 69/100). In the "portability" category, the Poco X8s significantly outperforms the Vivo iQOO 15 Ultra (65/100 vs 35/100).
Specs comparison
| Specification | Poco X8s | Vivo iQOO 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 7 Gen 4 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 1464882 | 4602290 | |
| Geekbench Single | 1270 | 3639 | |
| Geekbench Multi | 4106 | 11047 | |
| Display | 6.3" LTPO OLED | 6.8" LTPO AMOLED | |
| Resolution | 1220x2656 | 1440x3168 | |
| Refresh rate | 120 Hz | 144 Hz | |
| Battery | 6330 mAh | 7400 mAh | |
| Charging | 100W | 120W | |
| Wireless charging | 0W | 50W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 50 MP | 50 MP | |
| Front camera | 20 MP | 32 MP | |
| RAM | 8GB / 12GB | 12GB / 16GB / 24GB | |
| Storage | 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 3500 nits | 8000 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 151.1×71.8×8.1 mm | 163.7×76.8×8.7 mm | |
| Weight | 187 g | 227 g | |
| Launch price | $437 | $799 |
Camera comparison
Poco X8s
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Vivo iQOO 15 Ultra
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Poco X8s
- 6.3" LTPO OLED
- Resolution: 1220x2656
- Refresh rate: 120 Hz
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Battery and charging
Poco X8s
- 6330 mAh
- Wired: 100W
- No wireless charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Overall performance score
We compared Poco X8s and Vivo iQOO 15 Ultra, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads Poco X8s by 68.2% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $362. Poco X8s was $362 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Poco X8s (99/100 vs 67/100).
display
In the "display" category, the Vivo iQOO 15 Ultra is a bit better (99/100 vs 85/100).
camera
In the "camera" category, the Vivo iQOO 15 Ultra notably outperforms the Poco X8s (78/100 vs 58/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra notably outperforms the Poco X8s (92/100 vs 69/100).
portability
In the "portability" category, the Poco X8s significantly outperforms the Vivo iQOO 15 Ultra (65/100 vs 35/100).
Frequently asked questions
Which is better: the Poco X8s or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra significantly outperforms the Poco X8s by 22 points (89/100 vs 67/100).
What is the rating of the Poco X8s and the Vivo iQOO 15 Ultra?
The Poco X8s has a MobileRank rating of 67/100, the Vivo iQOO 15 Ultra — 89/100.
Which has the better camera: the Poco X8s or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on camera score (78/100 vs 58/100).
Which is more powerful: the Poco X8s or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 67/100).
Should you choose the Poco X8s over the Vivo iQOO 15 Ultra?
The Poco X8s is a better fit for active users. The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.