Xiaomi Poco X3 Pro vs Samsung Galaxy S21 Ultra
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Compared 2 smartphones : Xiaomi Poco X3 Pro Manufactured in April, 2021, with display 6.67 with chipsetQualcomm Snapdragon 860, vs Samsung Galaxy S21 Ultra, Manufactured in February, 2021 with chipsetSamsung Exynos 2100. Below are specs, tests, pros and cons for each device
Key Differences
Reasons to choose Xiaomi Poco X3 Pro
- Lighter design: 215g vs 227g
- Higher battery capacity: 5160mAh vs 5000mAh
- Infrared port
Reasons to choose Samsung Galaxy S21 Ultra
- Larger display: 6.8in
- Higher pixel density: 515ppi
- Newer Bluetooth version: 5.2 vs 5
- Supports newer USB: 3.2 vs 2
- Supports Dolby Atmos
- Built-in eSIM
Versions
| Memory Options | - 6/125 GB - 6/128 GB - 6/256 GB - 8/128 GB - 8/256 GB |
- 12/128 GB - 12/256 GB - 12/512 GB - 16/256 GB - 16/512 GB |
Review
Display
Color accuracy, sharpness & brightness
Camera
Main & front camera tests
Performance
App & system performance
Games
3D gaming performance
Battery
Battery life, charging speed & type
Connectivity
Connectivity features
Adjust each parameter’s importance to find the best match for you.
Tests & specs
Specs & test comparisonDisplay
| Type | IPS LCD | Dynamic AMOLED |
| Size | 6.67 in | 6.8 in |
| Resolution | 1080x2400 pixels | 1440x3200 pixels |
| Aspect ratio | 20:9 | 20:9 |
| Pixel density | 395 ppi | 515 ppi |
| Refresh rate | 120 Hz | 120 Hz |
| Adaptive refresh rate | No | Yes (10-120 Hz) |
| Max brightness | 450 nits | 1500 nits |
| HDR support | Yes HDR10 | Yes HDR10+ |
| Touch Sampling Rate | 240 Hz | n/a |
| Screen-to-body ratio | 84.6 % | 89.5 % |
| Features | n/a | - DCI-P3 - Always-On Display |
| sRGB gamut | 95.1 % | n/a |
| PWM (Flicker) | 2404 Hz | n/a |
| Response time | 37.4 ms | n/a |
| Contrast | 995:1 | n/a |
Design & Build
| Height | 165.3 mm (6.51 in) | 165.1 mm (6.5 in) |
| Width | 76.8 mm (3.02 in) | 75.6 mm (2.98 in) |
| Thickness | 9.4 mm (0.37 in) | 8.9 mm (0.35 in) |
| Weight | 215 g (7.58 oz) | 227 g (8.01 oz) |
| Water resistance | IP53 | IP68 |
| Cooling system | Vapor chamber | n/a |
| Back panel | Plastic | Glass |
| Frame | Plastic | Metal |
| Colors | - Black - Gold - Blue |
- Black - Silver - Gray - Blue |
| Fingerprint sensor | Yes In-Button | Yes In-Display |
Screen-to-body ratio
Performance
| Chipset | Qualcomm Snapdragon 860 | Samsung Exynos 2100 |
| Max Frequency | 2960 MHz | 2900 MHz |
| CPU Cores | 8 (1 + 3 + 4) | 8 (1 + 3 + 4) |
| Architecture | - 4/1.8 (Cortex-A55 (Kryo 485 Silver)) - 3/2.42 (Cortex-A76 (Kryo 485 Gold)) - 1/2.96 (Cortex-A76 (Kryo 485 Prime)) |
- 4/2.2 (Cortex-A55) - 3/2.81 (Cortex-A78) - 1/2.91 (Cortex-X1) |
| Process | TSMC | Samsung |
| Transistor Size | 7 nm | 5 nm |
| Neural Processor | Hexagon 690 | Yes |
| Graphics | Adreno 640 | Mali-G78 MP14 |
| GPU Cores | 768 | 896 |
| GPU Frequency | 675 MHz | 854 MHz |
| FLOPS | 1036.8 GFLOPS | 1530.4 GFLOPS |
| Geekbench 6 (Single-Core) | 973 | 1449 |
| Geekbench 6 (Multi-Core) | 2589 | 3892 |
| CPU | 181709 | 232358 |
| GPU | 155743 | 256356 |
| Memory | 126967 | 163007 |
| UX | 177878 | 191217 |
| NanoReview Score | 642297 | 843008 |
| Max Surface Temp. | 44.1 °C | 40.8 °C |
| Stability | 97 % | 69 % |
| Graphics Test | 20 fps | 31 fps |
| Graphics Score | 3456 | 5221 |
| Writing score | 13393 | n/a |
| Web score | 8062 | n/a |
| Video editing | 6035 | n/a |
| Data manipulation | 8470 | n/a |
| NanoReview Score | 10579 | n/a |
Memory
| RAM Size | - 6 GB - 8 GB |
- 12 GB - 16 GB |
| Memory Type | LPDDR4X | LPDDR5 |
| Memory Frequency | 2133 MHz | 2750 MHz |
| Channels | 2 | 2 |
| Storage Capacity | - 128 GB - 256 GB | - 128 GB - 256 GB - 512 GB |
| Storage Type | UFS 3.1 | UFS 3.1 |
| Memory Card | MicroSD | No |
Software
| OS | Android 11 (Upgradeable to Android 13) | Android 11 (Upgradeable to Android 14) |
| OS Size | 13 GB | 26.4 GB |
| UI Skin | MIUI 14 | One UI 6 |
Battery
| Volume | 5160 mAh | 5000 mAh |
| Max Charging Power | 33 W | 25 W |
| Battery Type | Li-Po | Li-ion |
| Removable | No | No |
| Wireless Charging | No | Yes (15 W) |
| Reverse Charging | No | Yes (Wireless) |
| Fast Charging | Yes (55% in 30 min) | Yes (54% in 30 min) |
| Full Charge Time | 1:15 h | 1:11 h |
| Web Browsing | 08:43 h | 07:58 h |
| Video Playback | 12:45 h | 13:59 h |
| Games | 05:20 h | 05:14 h |
| Standby Mode | 117 h | 111 h |
Main camera
| Matrix | 48 MP | 108 MP |
| Photo resolution | 8000x6000 pixels | 12000x9000 pixels |
| Zoom | Digital | Optical, 10x |
| Flash | Dual LED | Dual LED |
| Stabilization | Digital | Optical |
| 8K Recording | No | Up to 24FPS |
| 4K Recording | Yes (Up to 30 fps) | Yes (Up to 60 fps) |
| 1080p Recording | Yes (Up to 60 fps) | Yes (Up to 60 fps) |
| Slow Motion | 960 fps (1080p) | 960 fps (720p) |
| Wide-angle lens | 119 ° | 120 ° |
| Lenses count | Standard: 48 MP Ultra-wide: 8 MP Macro: 2 MP Depth: 2 MP |
Standard: 108 MP Telephoto: 10 MP Telephoto: 10 MP Ultra-wide: 12 MP |
| Features | - Bokeh effect - Pro mode |
- Bokeh effect - Pro mode - RAW support |
| Matrix | 48 MP | 108 MP |
| Aperture | f/1.8 | f/1.8 |
| Focal length | 26 mm | 26 mm |
| Sensor | Sony IMX582 | Samsung S5KHM3 |
| Sensor size | 1/2.0 | 1/1.33 |
| Pixel size | 0.8 μm | 0.8 μm |
| Autofocus | Phase autofocus | Laser autofocus |
| Stabilization | Digital | Optical |
| Matrix | n/a | 10 MP |
| Aperture | n/a | f/4.9 |
| Focal length | n/a | 240 mm |
| Sensor | n/a | Samsung S5K3J1 |
| Sensor size | n/a | 1/2.65 |
| Pixel size | n/a | 1.22 μm |
| Stabilization | n/a | Optical |
| Matrix | 8 MP | 12 MP |
| Aperture | f/2.2 | f/2.2 |
| Focal length | n/a | 13 mm |
| Sensor | Omnivision OV8856 | Sony IMX563 |
| Sensor size | 1/4 | 1/2.55 |
| Pixel size | 1.12 μm | 1.4 μm |
| Stabilization | Digital | Digital |
| Bokeh | n/a | 70 |
| Preview | n/a | 67 |
| Zoom | n/a | 106 |
Front camera
| Matrix | 20 MP | 40 MP |
| Photo resolution | 5480x3648 pixels | 7864x5200 pixels |
| Aperture | f/2.2 | f/2.2 |
| Focal length | 25 mm | 26 mm |
| Sensor | CMOS | Samsung S5KGH1 |
| Sensor size | 1/3.4 | 1/2.65 |
| Pixel size | 0.8 μm | 0.7 μm |
| Autofocus | No | Phase autofocus |
| Stabilization | Digital | Digital |
| Video resolution | 1080p (Full HD) at 30 fps | 2160p (4K) at 60 fps |
| TOF 3D sensor | No | No |
Connectivity
| Wi-Fi version | Wi-Fi 5 (802.11 a/b/g/n/ac) | Wi-Fi 6E (802.11 a/b/g/n/ac/ax) |
| Wi-Fi features | - Dual Band - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display |
- Dual Band - Wi-Fi MiMO - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display |
| Bluetooth version | 5 | 5.2 |
| Bluetooth features | LE, A2DP | LE, A2DP |
| USB type | USB Type-C | USB Type-C |
| USB version | 2 | 3.2 |
| USB features | - Charging - USB Storage Mode - USB-Host mode - OTG |
- Charging - USB Storage Mode - USB-Host mode - OTG |
| GPS | - GPS - GLONASS - Beidou - Galileo |
- GPS - GLONASS - Beidou - Galileo |
| NFC* | Yes | Yes |
| Infrared Port | Yes | No |
| SIM Count* | 2 | 2 |
| SIM Type | Nano | Nano |
| SIM Mode | Dual SIM Standby | Dual SIM Standby |
| eSIM Support * | No | Yes |
| Hybrid Slot | Yes | No |
| 2G Bands | GSM B2/3/5/8 | GSM 850, 900, 1800, 1900 MHz |
| 3G Bands | UMTC B1/2/4/5/8 | WCDMA Band 1, 2, 4, 5, 8 |
| LTE Bands* | LTE (B1/B2/B3/B4/B5/B7/B8/B20/B28/B32/B38/B40/B41) | LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B32/B38/B39/B40/B41/B66) |
| LTE category | 20 | 24 |
| 5G Support | No | Yes |
Sound
| Speakers | Stereo | Stereo |
| 3.5 mm Jack | Yes | No |
| FM Radio | Yes | No |
| Dolby Atmos | No | Yes |
Other
| Class | Mid-range | Flagship |
| Announced | March, 2021 yr | January, 2021 yr |
| Release Date | April, 2021 yr | February, 2021 yr |
| Launch Price ($) | 250 | 1200 |
| Sensors | - Proximity Sensor - Gyroscope - Accelerometer - Ambient Light Sensor - Compass - Fingerprint sensor |
- Hall Sensor - Barometer - Proximity Sensor - Gyroscope - Accelerometer - Ambient Light Sensor - Compass - Fingerprint sensor |
*
Attention!
Config, frequencies, NFC, and other specs may vary by region.
Results
After analyzing the data, we consider Samsung Galaxy S21 Ultra the clear winner in this comparison.
Survey
Total Votes: 0
