POCO X8 Pro Max vs Samsung Galaxy S21 Ultra
75.8Performance37.2
70.8Display56.3
43.4Camera72
89.4Battery46.4
100Features78.7
11 spec wins — POCO X8 Pro Max6 spec wins — Samsung Galaxy S21 Ultra
InnoReviews verdict
POCO X8 Pro Max wins this phone face-off, 73.5 to 53.9, pulling ahead mainly in battery (+43) and performance (+39). Samsung Galaxy S21 Ultra 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 performance score: 76 vs 37
- Stronger display score: 71 vs 56
- Stronger battery score: 89 vs 46
- Stronger features score: 100 vs 79
- 577% higher AnTuTu 11 (GPU): 859,318 vs 126,989
- Lower launch price: $469 vs $1,199
Reasons to pick the Samsung Galaxy S21 Ultra
- Stronger camera score: 72 vs 43
- 900% higher Optical zoom: 10 x vs 1 x
- 116% higher Main camera: 108 MP vs 50 MP
- 100% higher Front camera: 40 MP vs 20 MP
- 50% higher ultra-wide: 12 MP vs 8 MP
Display
| Spec | POCO X8 Pro Max | Samsung Galaxy S21 Ultra |
|---|---|---|
| Screen size | 6.83 ″ | 6.8 ″ |
| Panel type | AMOLED | LTPO AMOLED |
| Resolution | 1280x2772 | 3200x1440 |
| Pixel density | 447 ppi | 515 ppi+15% |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 3,500 nits+133% | 1,500 nits |
| Screen-to-body | 94.3 % | — |
Performance
| Spec | POCO X8 Pro Max | Samsung Galaxy S21 Ultra |
|---|---|---|
| Chipset | MediaTek Dimensity 9500s | Samsung Exynos 2100 |
| AnTuTu 11 | 2,604,459+232%Top 25% | 783,817Bottom 22% |
| AnTuTu 11 (CPU) | 803,108+205%Top 22% | 263,424Bottom 17% |
| AnTuTu 11 (GPU) | 859,318+577%Top 28% | 126,989Bottom 33% |
| AnTuTu 11 (Memory) | 405,204+145%Top 16% | 165,563Bottom 35% |
| AnTuTu 11 (UX) | 536,829+136%Top 31% | 227,841Bottom 20% |
| Geekbench 6 (single) | — | 1,430Top 46% |
| Geekbench 6 (multi) | — | 3,550Bottom 50% |
| RAM (max) | 12 GB | 12 GB |
| Storage options | 256GB / 512GB | 128GB / 256GB / 512GB |
| Storage type | UFS 4.1 | UFS 3.1 |
Camera
| Spec | POCO X8 Pro Max | Samsung Galaxy S21 Ultra |
|---|---|---|
| Main camera | 50 MP | 108 MP+116% |
| Main aperture | f/1.5 | f/1.8 |
| Ultra-wide | 8 MP | 12 MP+50% |
| Telephoto | — | 10 MP |
| Optical zoom | 1 x | 10 x+900% |
| Max video | 4K@60fps | 8K@24fps |
| Front camera | 20 MP | 40 MP+100% |
| OIS | Yes | Yes |
Battery
| Spec | POCO X8 Pro Max | Samsung Galaxy S21 Ultra |
|---|---|---|
| Capacity | 8,500 mAh+70% | 5,000 mAh |
| Wired charging | 100 W+300% | 25 W |
| Wireless charging | 0 W | 15 W |
| Active use endurance | 25.4 h | — |
Design
| Spec | POCO X8 Pro Max | Samsung Galaxy S21 Ultra |
|---|---|---|
| Weight | 218 g+4% | 228 g |
| Thickness | 8.2 mm+8% | 8.9 mm |
| IP rating | IP68/IP69K | IP68 |
| Frame material | Aluminum | Aluminum |
Connectivity
| Spec | POCO X8 Pro Max | Samsung Galaxy S21 Ultra |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 7 | Wi-Fi 6E |
| Bluetooth | 6.0 | 5.2 |
| NFC | Yes | Yes |
| USB | USB-C 2.0 | USB-C 3.2 |
| eSIM | Yes | Yes |
Software
| Spec | POCO X8 Pro Max | Samsung Galaxy S21 Ultra |
|---|---|---|
| OS at launch | Android 16 (HyperOS 3) | Android 11 (One UI 3.1) |
| OS update pledge | — | 4 years |
Audio
| Spec | POCO X8 Pro Max | Samsung Galaxy S21 Ultra |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |
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