POCO X8 vs Xiaomi 15 Ultra
46.7Performance79.1
66.5Display69.1
42.6Camera73.2
77.2Battery79
86.7Features78.7
5 spec wins — POCO X86 spec wins — Xiaomi 15 Ultra
InnoReviews verdict
Xiaomi 15 Ultra wins this phone face-off, 75.9 to 59.9, pulling ahead mainly in performance (+32) and camera (+31). POCO X8 still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the POCO X8
- Stronger features score: 87 vs 79
- 54% higher capacity: 8,340 mAh vs 5,410 mAh
Reasons to pick the Xiaomi 15 Ultra
- Stronger performance score: 79 vs 47
- Stronger camera score: 73 vs 43
- 100% higher Front camera: 32 MP vs 16 MP
- 34% higher Wired charging: 90 W vs 67 W
- 33% higher RAM (max): 16 GB vs 12 GB
Display
| Spec | POCO X8 | Xiaomi 15 Ultra |
|---|---|---|
| Screen size | 6.83 ″+1% | 6.73 ″ |
| Panel type | AMOLED | LTPO AMOLED |
| Resolution | 1280x2772 | 1440x3200 |
| Pixel density | 447 ppi | 522 ppi+17% |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 3,500 nits+9% | 3,200 nits |
| Screen-to-body | 89.5 % | 90 %+1% |
Performance
| Spec | POCO X8 | Xiaomi 15 Ultra |
|---|---|---|
| Chipset | Snapdragon 6s Gen 4 | Snapdragon 8 Elite |
| AnTuTu | — | 2,650,000 |
| Geekbench 6 (single) | — | 3,050Top 12% |
| Geekbench 6 (multi) | — | 9,600Top 11% |
| RAM (max) | 12 GB | 16 GB+33% |
| Storage options | 128/256GB | 256/512GB/1TB |
| Storage type | UFS 2.2/3.1 | UFS 4.1 |
Camera
| Spec | POCO X8 | Xiaomi 15 Ultra |
|---|---|---|
| Main camera | 50 MP | 50 MP |
| Main aperture | f/1.8 | f/1.63 |
| Ultra-wide | — | 50 MP |
| Telephoto | — | 200 MP |
| Optical zoom | — | 4.3 x |
| Max video | 1080p@30fps | 8K@30fps |
| Front camera | 16 MP | 32 MP+100% |
| OIS | Yes | Yes |
Battery
| Spec | POCO X8 | Xiaomi 15 Ultra |
|---|---|---|
| Capacity | 8,340 mAh+54% | 5,410 mAh |
| Wired charging | 67 W | 90 W+34% |
| Wireless charging | — | 80 W |
| Active use endurance | — | 12 h |
Design
| Spec | POCO X8 | Xiaomi 15 Ultra |
|---|---|---|
| Weight | 223 g+1% | 226 g |
| Thickness | 8.6 mm+8% | 9.4 mm |
| IP rating | IP66/IP68/IP69/IP69K | IP68 |
| Frame material | Plastic | Aluminum |
Connectivity
| Spec | POCO X8 | Xiaomi 15 Ultra |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 5 | Wi-Fi 7 |
| Bluetooth | 5.1 | 6.0 |
| NFC | Yes | Yes |
| USB | USB-C 2.0 | USB-C 3.2 |
| eSIM | No | Yes |
Software
| Spec | POCO X8 | Xiaomi 15 Ultra |
|---|---|---|
| OS at launch | Android 16 (HyperOS 3) | Android 15 (HyperOS 2) |
| OS update pledge | — | 4 years |
Audio
| Spec | POCO X8 | Xiaomi 15 Ultra |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |