Poco X8 vs Vivo X300 Ultra
The Poco X8 (2026) runs on the Qualcomm Snapdragon 6s Gen 4, while the Vivo X300 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $389 and $950. By overall MobileRank rating, the Vivo X300 Ultra leads — 91/100 vs 55/100 (a 36-point difference). Key differences: the Poco X8 has the bigger battery (8340 mAh vs 7000); the main camera is 50 MP vs 200 MP; the Vivo X300 Ultra is faster in AnTuTu (4,247,433 vs 829,894).
Profile comparison
Category scores
Poco X8
Vivo X300 Ultra
What makes Poco X8 better?
- Bigger battery: 8340 vs 7000 mAh
- Lighter: 223g vs 230g
- Cheaper at launch: $389 vs $950
- Overall rating 55/100
What makes Vivo X300 Ultra better?
- Higher AnTuTu: 4247433 vs 829894
- Better Geekbench Single: 3639 vs 1009
- Better Geekbench Multi: 11047 vs 2892
- Faster charging: 100W vs 67W
- Better main camera: 200MP vs 50MP
- Higher performance (99/100 vs 55/100)
- Better camera (96/100 vs 35/100)
- Longer battery life (85/100 vs 69/100)
- Better display (89/100 vs 84/100)
Comparison verdict
Comparing the Poco X8 vs the Vivo X300 Ultra, the Vivo X300 Ultra scores 36 points higher (91/100 vs 55/100). In the "performance" category, the Vivo X300 Ultra leads (99/100 vs 55/100). In the "camera" category, the Vivo X300 Ultra leads (96/100 vs 35/100). In the "battery" category, the Vivo X300 Ultra leads (85/100 vs 69/100). Value score: Poco X8 — 40/100, Vivo X300 Ultra — 94/100; 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 X300 Ultra significantly outperforms the Poco X8 (99/100 vs 55/100). In the "display" category, the Vivo X300 Ultra is a bit better (89/100 vs 84/100). In the "camera" category, the Vivo X300 Ultra significantly outperforms the Poco X8 (96/100 vs 35/100). In the "battery" category, the Vivo X300 Ultra notably outperforms the Poco X8 (85/100 vs 69/100). In the "portability" category, both devices are on the same level — 39/100.
Specs comparison
| Specification | Poco X8 | Vivo X300 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 6s Gen 4 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 829894 | 4247433 | |
| Geekbench Single | 1009 | 3639 | |
| Geekbench Multi | 2892 | 11047 | |
| Display | 6.8" AMOLED | 6.8" LTPO OLED | |
| Resolution | 1280x2772 | 3168x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 8340 mAh | 7000 mAh | |
| Charging | 67W | 100W | |
| Wireless charging | 0W | 40W | |
| DXOMark (camera) | — | 170 | |
| Main camera | 50 MP | 200 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 200 MP | |
| Front camera | 16 MP | 32 MP | |
| RAM | 6GB / 8GB / 12GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | yes | |
| Protection | IP68/IP69K | IP69 | |
| Dimensions | 163.5×78.3×8.6 mm | 163.0×76.8×8.2 mm | |
| Weight | 223 g | 230 g | |
| Launch price | $389 | $950 |
Camera comparison
Poco X8
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Front: 16MP
Vivo X300 Ultra
- Main: 200MP f/1.6
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
Display comparison
Poco X8
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 120 Hz
Vivo X300 Ultra
- 6.8" LTPO OLED
- Resolution: 3168x1440
- Refresh rate: 120 Hz
Battery and charging
Poco X8
- 8340 mAh
- Wired: 67W
- No wireless charging
Vivo X300 Ultra
- 7000 mAh
- NanoReview test: web browsing 10:18 hrs, total 29:11 hrs
- Wired: 100W
- Wireless: 40W
Overall performance score
We compared Poco X8 and Vivo X300 Ultra, covering their specs and all relevant benchmarks.
Vivo X300 Ultra leads Poco X8 by 80.5% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $561. Poco X8 was $561 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo X300 Ultra significantly outperforms the Poco X8 (99/100 vs 55/100).
display
In the "display" category, the Vivo X300 Ultra is a bit better (89/100 vs 84/100).
camera
In the "camera" category, the Vivo X300 Ultra significantly outperforms the Poco X8 (96/100 vs 35/100).
battery
In the "battery" category, the Vivo X300 Ultra notably outperforms the Poco X8 (85/100 vs 69/100).
portability
In the "portability" category, both devices are on the same level — 39/100.
Frequently asked questions
Which is better: the Poco X8 or the Vivo X300 Ultra?
The Vivo X300 Ultra significantly outperforms the Poco X8 by 36 points (91/100 vs 55/100).
What is the rating of the Poco X8 and the Vivo X300 Ultra?
The Poco X8 has a MobileRank rating of 55/100, the Vivo X300 Ultra — 91/100.
Which has the better camera: the Poco X8 or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on camera score (96/100 vs 35/100).
Which is more powerful: the Poco X8 or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on performance (99/100 vs 55/100).
Should you choose the Poco X8 over the Vivo X300 Ultra?
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.