POCO X8 Pro vs Samsung Galaxy S21 Ultra
69.5Performance37.2
71.3Display56.3
43.4Camera72
78.5Battery46.4
86.7Features78.7
10 spec wins — POCO X8 Pro7 spec wins — Samsung Galaxy S21 Ultra
InnoReviews verdict
POCO X8 Pro wins this phone face-off, 68.2 to 53.9, pulling ahead mainly in performance (+32) and battery (+32). 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
- Stronger performance score: 70 vs 37
- Stronger display score: 71 vs 56
- Stronger battery score: 79 vs 46
- Stronger features score: 87 vs 79
- 399% higher AnTuTu 11 (GPU): 634,127 vs 126,989
- Lower launch price: $299 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 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Screen size | 6.59 ″ | 6.8 ″+3% |
| Panel type | AMOLED | LTPO AMOLED |
| Resolution | 1268x2756 | 3200x1440 |
| Pixel density | 460 ppi | 515 ppi+12% |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 3,500 nits+133% | 1,500 nits |
| Screen-to-body | 94.1 % | — |
Performance
| Spec | POCO X8 Pro | Samsung Galaxy S21 Ultra |
|---|---|---|
| Chipset | MediaTek Dimensity 8500 Ultra | Samsung Exynos 2100 |
| AnTuTu 11 | 1,977,887+152%Top 41% | 783,817Bottom 22% |
| AnTuTu 11 (CPU) | 584,825+122%Top 44% | 263,424Bottom 17% |
| AnTuTu 11 (GPU) | 634,127+399%Top 39% | 126,989Bottom 33% |
| AnTuTu 11 (Memory) | 322,126+95%Top 37% | 165,563Bottom 35% |
| AnTuTu 11 (UX) | 436,809+92%Top 43% | 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 | 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 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Capacity | 6,500 mAh+30% | 5,000 mAh |
| Wired charging | 100 W+300% | 25 W |
| Wireless charging | 0 W | 15 W |
Design
| Spec | POCO X8 Pro | Samsung Galaxy S21 Ultra |
|---|---|---|
| Weight | 202 g+12% | 228 g |
| Thickness | 8.4 mm+6% | 8.9 mm |
| IP rating | IP68/IP69K | IP68 |
| Frame material | Aluminum | Aluminum |
Connectivity
| Spec | POCO X8 Pro | Samsung Galaxy S21 Ultra |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 6 | Wi-Fi 6E |
| Bluetooth | 6.0 | 5.2 |
| NFC | Yes | Yes |
| USB | USB-C 2.0 | USB-C 3.2 |
| eSIM | — | Yes |
Software
| Spec | POCO X8 Pro | 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 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |
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