POCO M8x 5G vs Vivo X300 Ultra
20Performance93.3
50.5Display82.3
29Camera84.6
71.3Battery91.5
62.7Features84
3 spec wins — POCO M8x 5G9 spec wins — Vivo X300 Ultra
InnoReviews verdict
Vivo X300 Ultra wins this phone face-off, 88.1 to 42.4, pulling ahead mainly in performance (+73) and camera (+56). POCO M8x 5G still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the POCO M8x 5G
- 20% higher capacity: 7,900 mAh vs 6,600 mAh
- Has 3.5mm jack — the other doesn't
Reasons to pick the Vivo X300 Ultra
- Stronger performance score: 93 vs 20
- Stronger display score: 82 vs 51
- Stronger camera score: 85 vs 29
- Stronger battery score: 92 vs 71
- Stronger features score: 84 vs 63
Display
| Spec | POCO M8x 5G | Vivo X300 Ultra |
|---|---|---|
| Screen size | 6.9 ″+1% | 6.82 ″ |
| Panel type | LCD | LTPO AMOLED |
| Resolution | 720x1600 | 1440x3168 |
| Pixel density | 254 ppi | 510 ppi+101% |
| Refresh rate | 120 Hz | 144 Hz+20% |
| Peak brightness | — | 4,500 nits |
| Screen-to-body | — | 90.3 % |
Performance
| Spec | POCO M8x 5G | Vivo X300 Ultra |
|---|---|---|
| Chipset | Qualcomm Snapdragon 4 Gen 5 | Qualcomm Snapdragon 8 Elite Gen 5 |
| AnTuTu | — | 4,085,695 |
| Geekbench 6 (single) | — | 3,730Top 3% |
| Geekbench 6 (multi) | — | 11,494Top 3% |
| RAM (max) | 6 GB | 16 GB+167% |
| Storage options | 128GB | 256/512GB/1TB |
| Storage type | UFS 2.2 | UFS 4.1 |
Camera
| Spec | POCO M8x 5G | Vivo X300 Ultra |
|---|---|---|
| Main camera | 50 MP | 200 MP+300% |
| Main aperture | f/1.8 | f/1.9 |
| Ultra-wide | — | 50 MP |
| Telephoto | — | 200 MP |
| Optical zoom | — | 3.7 x |
| Max video | — | 8K@30fps |
| Front camera | 8 MP | 50 MP+525% |
| OIS | — | Yes |
Battery
| Spec | POCO M8x 5G | Vivo X300 Ultra |
|---|---|---|
| Capacity | 7,900 mAh+20% | 6,600 mAh |
| Wired charging | 45 W | 100 W+122% |
| Wireless charging | 0 W | 40 W |
| Active use endurance | — | 16 h |
Design
| Spec | POCO M8x 5G | Vivo X300 Ultra |
|---|---|---|
| Weight | 232 g | 232 g |
| Thickness | 8.8 mm | 8.2 mm+7% |
| IP rating | IP64 | IP68/IP69 |
| Frame material | — | Aluminum |
Connectivity
| Spec | POCO M8x 5G | Vivo X300 Ultra |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | — | Wi-Fi 7 |
| Bluetooth | 5.1 | 5.4 |
| NFC | — | Yes |
| USB | — | USB-C 3.2 |
| eSIM | — | Yes |
Software
| Spec | POCO M8x 5G | Vivo X300 Ultra |
|---|---|---|
| OS at launch | Android 16 (HyperOS 3) | Android 16 (OriginOS 6) |
| OS update pledge | 4 years | 5 years+25% |
Audio
| Spec | POCO M8x 5G | Vivo X300 Ultra |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | Yes | No |