POCO X8 Pro Max vs Xiaomi 15 Ultra
75.8Performance79.1
70.8Display69.1
43.4Camera73.2
89.4Battery79
100Features78.7
8 spec wins — POCO X8 Pro Max6 spec wins — Xiaomi 15 Ultra
InnoReviews verdict
Xiaomi 15 Ultra wins this phone face-off, 75.9 to 73.5, pulling ahead mainly in camera (+30) and performance (+3). POCO X8 Pro Max 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 Pro Max
- Stronger battery score: 89 vs 79
- Stronger features score: 100 vs 79
- 112% higher Active use endurance: 25.4 h vs 12 h
- 57% higher capacity: 8,500 mAh vs 5,410 mAh
- 12% lower thickness: 8.2 mm vs 9.4 mm
- Lower launch price: $469 vs $1,499
Reasons to pick the Xiaomi 15 Ultra
- Stronger performance score: 79 vs 76
- Stronger camera score: 73 vs 43
- 525% higher ultra-wide: 50 MP vs 8 MP
- 330% higher Optical zoom: 4.3 x vs 1 x
- 60% higher Front camera: 32 MP vs 20 MP
Display
| Spec | POCO X8 Pro Max | 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 | 94.3 %+5% | 90 % |
Performance
| Spec | POCO X8 Pro Max | Xiaomi 15 Ultra |
|---|---|---|
| Chipset | MediaTek Dimensity 9500s | Snapdragon 8 Elite |
| AnTuTuDifferent AnTuTu versions — not compared | 2,604,459Top 25% | 2,650,000 |
| AnTuTu 11 (CPU) | 803,108Top 22% | — |
| AnTuTu 11 (GPU) | 859,318Top 28% | — |
| AnTuTu 11 (Memory) | 405,204Top 16% | — |
| AnTuTu 11 (UX) | 536,829Top 31% | — |
| Geekbench 6 (single) | — | 3,050Top 12% |
| Geekbench 6 (multi) | — | 9,600Top 11% |
| RAM (max) | 12 GB | 16 GB+33% |
| Storage options | 256GB / 512GB | 256/512GB/1TB |
| Storage type | UFS 4.1 | UFS 4.1 |
Camera
| Spec | POCO X8 Pro Max | Xiaomi 15 Ultra |
|---|---|---|
| Main camera | 50 MP | 50 MP |
| Main aperture | f/1.5 | f/1.63 |
| Ultra-wide | 8 MP | 50 MP+525% |
| Telephoto | — | 200 MP |
| Optical zoom | 1 x | 4.3 x+330% |
| Max video | 4K@60fps | 8K@30fps |
| Front camera | 20 MP | 32 MP+60% |
| OIS | Yes | Yes |
Battery
| Spec | POCO X8 Pro Max | Xiaomi 15 Ultra |
|---|---|---|
| Capacity | 8,500 mAh+57% | 5,410 mAh |
| Wired charging | 100 W+11% | 90 W |
| Wireless charging | 0 W | 80 W |
| Active use endurance | 25.4 h+112% | 12 h |
Design
| Spec | POCO X8 Pro Max | Xiaomi 15 Ultra |
|---|---|---|
| Weight | 218 g+4% | 226 g |
| Thickness | 8.2 mm+12% | 9.4 mm |
| IP rating | IP68/IP69K | IP68 |
| Frame material | Aluminum | Aluminum |
Connectivity
| Spec | POCO X8 Pro Max | Xiaomi 15 Ultra |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 7 | Wi-Fi 7 |
| Bluetooth | 6.0 | 6.0 |
| NFC | Yes | Yes |
| USB | USB-C 2.0 | USB-C 3.2 |
| eSIM | Yes | Yes |
Software
| Spec | POCO X8 Pro Max | Xiaomi 15 Ultra |
|---|---|---|
| OS at launch | Android 16 (HyperOS 3) | Android 15 (HyperOS 2) |
| OS update pledge | — | 4 years |
Audio
| Spec | POCO X8 Pro Max | Xiaomi 15 Ultra |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |